Sharp AE-X4M30PU User manual

AE-X4M30PU
1
SPECIFICATION---------------------------------------------------------------------------------------------------------------2
SPECIFICATION ----------------------------------------------------------------------------------------------------------2
EXTERNAL DIMENSION------------------------------------------------------------------------------------------------4
CAPACITY TABLE--------------------------------------------------------------------------------------------------------5
ELECTRICAL PARTS----------------------------------------------------------------------------------------------------8
CYCLE PARTS-------------------------------------------------------------------------------------------------------------8
WIRING DIAGRAMS -----------------------------------------------------------------------------------------------------8
EXPLANATION OF CIRCUIT AND OPERATION -------------------------------------------------------------- 12
BLOCK DIAGRAM ------------------------------------------------------------------------------------------------------12
FUNCTIONS--------------------------------------------------------------------------------------------------------------13
TROUBLE SHOOTING GUIDE ----------------------------------------------------------------------------------------16
SELF-DIAGNOSIS FUNCTION--------------------------------------------------------------------------------------16
PROTECTIVE FUNCTIONS AND OPERATIONS --------------------------------------------------------------25
REFRIGERATION CYCLE----------------------------------------------------------------------------------------------- 26
DISASSEMBLING PROCEDURE------------------------------------------------------------------------------------------29
PROCEDURE ------------------------------------------------------------------------------------------------------------29
Position of the thermistors.--------------------------------------------------------------------------------------------32
How to disassemble the control box assembly------------------------------------------------------------------- 33
SERVICE MANUAL
In the interests of user-safety (Required by safety regulations in some countries)
the set should be restored to its original condition and only parts identical to those
specied should be used
This document has been published to be used for after sales service only.
The contents are subject to change without notice.
CONTENTS
S3302AEX4M3PUT
MULTI SPLIT TYPE
ROOM AIR CONDITIONERS
OUTDOOR UNIT
MODEL AE-X4M30PU

2
AE-X4M30PU
SPECIFICATION
SPECIFICATION MODEL
ITEMS INDOOR UNIT OUTDOOR UNIT
AY-XPC07PU/09PU/12PU/15PU/18PU AE-X4M30PU
Rated cooling capacity
(Min. - Max.) 9K&7K&7K&7K Btu/h 29000 ( 12000 ~ 31000)
Rated heating capacity
(Min. - Max.) 9K&7K&7K&7K Btu/h 33000 ( 12000 ~ 37000)
Moisture removal (at cooling) pints/h 1.7×3 & 2.1
Electrical data
Phase Single
Rated frequency Hz 60
Rated voltage V 208/230
Rated current
(Min.-Max.) Cool A 13.6 ( 3.3 ~ 15.6) *
Heat A 12.6 ( 3.7 ~ 14.3) *
Rated input
(Min.-Max.) Cool W 3080 ( 640 ~ 3530)
Heat W 2860 ( 800 ~ 3250)
Power factor Cool % 98 *
Heat % 99 *
Compressor
Type Twin rotary
Model SNB172FEKMT
Oil charge type FV50S
oz. ( cc) 27.4 ( 700)
Refrigerant system
Evaporator Louver Fin and Grooved tube type
Condenser Corrugate Fin and Grooved tube type
Control Expansion valve
Refrigerant type R410A
oz. ( g) 88.2 ( 2500)
Noise level
(at cooling)
High ／Soft
53
07PU
dB(A)
38 ／26
09PU 39 ／26
12PU 44 ／27
15PU 44 ／32
18PU 45 ／33
Noise level
(at heating)
High ／Soft
55
07PU
dB(A)
39 ／28
09PU 40 ／28
12PU 43 ／29
15PU 44 ／34
18PU 46 ／35
Fan system
Drive Direct drive
Air ow quantity
(at cooling)
High / Soft
1802 ( 51)
07PU
CFM
(m3/min)
332 / 198 ( 9.4 / 5.6)
09PU 343 / 198 ( 9.7 / 5.6)
12PU 382 / 216 ( 10.8 / 6.1)
15PU 466 / 307 ( 13.2 / 8.7)
18PU 477 / 311 ( 13.5 / 8.8)
Air ow quantity
(at heating)
High / Soft
1802 ( 51)
07PU
CFM
(m3/min)
332 / 230 ( 9.4 / 6.5)
09PU 343 / 230 ( 9.7 / 6.5)
12PU 410 / 244 ( 11.6 / 6.9)
15PU 505 / 332 ( 14.3 / 9.4)
18PU 512 / 336 ( 14.5 / 9.5)
Fan Cross ow fan Propeller fan

AE-X4M30PU
3
MODEL
ITEMS INDOOR UNIT OUTDOOR UNIT
AY-XPC07PU/09PU/12PU/15PU/18PU AE-X4M30PU
Connections
Refrigerant coupling Flare type
Refrigerant tube size
( Gas line) 7K, 9K, 12K inch (mm) 3/8 ( 9.52)
15K, 18K 1/2 (12.7)
Refrigerant tube size (Liquid line) inch (mm) 1/4 ( 6.35)
Minimum －Maximum length ( per unit) ft ( m) 10 - 82 ( 3 -25)
Maximum length 2 units ft ( m) 164 ( 50)
3 or 4 units 230 ( 70)
Maximum charge-less length ft ( m) 164 ( 50)
Maximum height difference ft ( m) 49 ( 15)
Additional charge oz./ft ( g/m) 0.16 ( 15)
Drain pipe O.D. inch (mm) 5/8 (16)
Others
Safety device Compressor: Thermal protector Fan motors: Thermal fuse
Fuse, Micro computer control, Pressure switch
Air llters Polypropylene net (Washable)
Net dimensions
(Width xHeight xDepth)
07PU , 09PU ,
12PU inch
(mm) 36-7/32 x 11-13/32 x 9-7/16 ( 920 x 290 x 240) 35 x 31-1/2 x 12-19/32
( 890 x 800 x 320)
15PU , 18PU inch
(mm) 38 x 12-5/16 x 9-27/32 ( 965 x 313 x 250)
Net weight
07PU , 09PU ,
12PU lb. (kg) 22 ( 10) 137 ( 62)
15PU 28.7 ( 13)
18PU 29.8 ( 13.5)
NOTE: Test conditions are based on AHRI 210/240. ( Refrigerant piping length [per unit] : 25ft[7.6m])
* : Voltage is 230V
: Representative connection

4
AE-X4M30PU
EXTERNAL DIMENSION
Length unit : inch (mm)
0.6 (16)
2 (51.3)
3 (75)
14.2 (361) 15.1 (383)
5.9 (150)
5.9 (150) 23.2 (590)
R0.3 (8.5)
37 (940)
31.5 (800)
35 (890)
37 (941)
1 (26.2) 8.3 (210)5.9 (151.1)
1.3 (32.7) 12.6 (320)
2.9 (73.6)
2 (52)
7 (178.6)
2 (52)
11.2 (283.6)
2 (52)
2 (52)
15.3(388.6)

AE-X4M30PU
5
CAPACITY TABLE
COOLING CAPACITY TABLE
Operating
Status
Indoor unit
combination Cooling capacity (Btu/h) Power input (W)
Rating (Min. - Max.)
Running curent (A)
Rating (Min. - Max.)
A B C D A B C D Rating ( Min - Max) 208V 230V
4-indoor unit
operation
18 12 7 7 11,864 7,909 4,614 4,614 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
18 9 9 9 11,600 5,800 5,800 5,800 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
18 9 9 7 12,140 6,070 6,070 4,721 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
18 9 7 7 12,732 6,366 4,951 4,951 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
18 7 7 7 13,385 5,205 5,205 5,205 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 15 7 7 9,886 9,886 4,614 4,614 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 12 9 9 9,667 7,733 5,800 5,800 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 12 9 7 10,116 8,093 6,070 4,721 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 12 7 7 10,610 8,488 4,951 4,951 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 9 9 9 10,357 6,214 6,214 6,214 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 9 9 7 10,875 6,525 6,525 5,075 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 9 7 7 11,447 6,868 5,342 5,342 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
15 7 7 7 12,083 5,639 5,639 5,639 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 12 12 9 7,733 7,733 7,733 5,800 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 12 12 7 8,093 8,093 8,093 4,721 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 12 9 9 8,286 8,286 6,214 6,214 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 12 9 7 8,700 8,700 6,525 5,075 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 12 7 7 9,158 9,158 5,342 5,342 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 9 9 9 8,923 6,692 6,692 6,692 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 9 9 7 9,405 7,054 7,054 5,486 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 9 7 7 9,943 7,457 5,800 5,800 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
12 7 7 7 10,545 6,152 6,152 6,152 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
9 9 9 9 7,250 7,250 7,250 7,250 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
9 9 9 7 7,676 7,676 7,676 5,971 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
9 9 7 7 8,156 8,156 6,344 6,344 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
9 7 7 7 8,700 6,767 6,767 6,767 29,000 (12,000 - 31,000) 3,080 (640 - 3,530) 15.1 (3.7 - 17.2) 13.6 (3.3 - 15.6)
7 7 7 7 7,050 7,050 7,050 7,050 28,200 (12,000 - 30,400) 2,950 (640 - 3,330) 14.4 (3.7 - 16.2) 13.0 (3.3 - 14.7)
3-indoor unit
operation
18 18 9 - 11,600 11,600 5,800 - 29,000 (12,000 - 31,000) 3,080 (620 - 3,530) 15.1 (3.6 17.2) 13.6 (3.2 - 15.6)
18 18 7 - 12,140 12,140 4,721 - 29,000 (12,000 - 31,000) 3,080 (620 - 3,530) 15.1 (3.6 17.2) 13.6 (3.2 - 15.6)
18 15 12 - 11,600 9,667 7,733 - 29,000 (12,000 - 31,000) 3,080 (620 - 3,530) 15.1 (3.4 - 16.9) 13.6 (3.1 - 15.3)
18 15 9 - 12,429 10,357 6,214 - 29,000 (12,000 - 31,000) 3,080 (620 - 3,530) 15.1 (3.4 - 16.9) 13.6 (3.1 - 15.3)
18 15 7 - 13,050 10,875 5,075 - 29,000 (12,000 - 31,000) 3,080 (620 - 3,530) 15.1 (3.4 - 16.9) 13.6 (3.1 - 15.3)
18 12 12 - 11,743 7,829 7,829 - 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
18 12 9 - 12,646 8,431 6,323 - 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
18 12 7 * 13,330 8,886 5,184 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
18 9 9 * 13,700 6,850 6,850 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
18 9 7 * 14,506 7,253 5,641 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
18 7 7 * 15,413 5,994 5,994 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
15 15 12 - 10,357 10,357 8,286 - 29,000 (12,000 - 31,000) 3,080 (600 - 3,480) 15.1 (3.4 - 16.9) 13.6 (3.1 - 15.3)
15 15 9 - 11,154 11,154 6,692 - 29,000 (12,000 - 31,000) 3,080 (600 - 3,480) 15.1 (3.4 - 16.9) 13.6 (3.1 - 15.3)
15 15 7 * 11,757 11,757 5,486 * 29,000 (12,000 - 31,000) 3,080 (600 - 3,480) 15.1 (3.4 - 16.9) 13.6 (3.1 - 15.3)
15 12 12 - 10,538 8,431 8,431 - 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
15 12 9 * 11,417 9,133 6,850 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
15 12 7 * 12,088 9,671 5,641 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
15 9 9 * 12,455 7,473 7,473 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
15 9 7 * 13,258 7,955 6,187 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
15 7 7 * 14,172 6,614 6,614 * 27,400 (12,000 - 31,000) 2,980 (600 - 3,500) 14.6 (3.4 - 17.0) 13.2 (3.1 - 15.4)
12 12 12 * 9,133 9,133 9,133 * 27,400 (10,600 - 29,200) 3,010 (600 - 3,440) 14.7 (3.4 - 16.8) 13.3 (3.1 - 15.2)
12 12 9 * 9,964 9,964 7,473 * 27,400 (10,600 - 29,200) 2,990 (600 - 3,420) 14.6 (3.4 - 16.7) 13.2 (3.1 - 15.1)
12 12 7 * 10,606 10,606 6,187 * 27,400 (10,600 - 29,200) 2,990 (600 - 3,420) 14.6 (3.4 - 16.7) 13.2 (3.1 - 15.1)
12 9 9 * 10,960 8,220 8,220 * 27,400 (10,600 - 29,200) 2,990 (600 - 3,420) 14.6 (3.4 - 16.7) 13.2 (3.1 - 15.1)
12 9 7 * 11,314 8,486 6,600 * 26,400 (10,600 - 28,800) 2,690 (600 - 3,310) 13.1 (3.4 - 16.1) 11.9 (3.1 - 14.6)
12 7 7 * 11,631 6,785 6,785 * 25,200 (10,600 - 27,600) 2,410 (600 - 2,960) 11.8 (3.4 - 14.4) 10.6 (3.1 - 13.0)
9 9 9 * 8,600 8,600 8,600 * 25,800 (10,600 - 28,200) 2,540 (600 - 3,120) 12.4 (3.4 - 15.2) 11.2 (3.1 - 13.8)
9 9 7 * 8,856 8,856 6,888 * 24,600 (10,600 - 27,000) 2,270 (600 - 2,780) 11.1 (3.4 - 13.6) 10.0 (3.1 - 12.3)
9 7 7 * 9,078 7,061 7,061 * 23,200 (10,600 - 25,600) 2,010 (600 - 2,460) 9.8 (3.4 - 12.0) 8.9 (3.1 - 10.9)
7 7 7 * 7,267 7,267 7,267 * 21,800 (10,600 - 24,000) 1,770 (600 - 2,160) 8.6 (3.4 - 10.5) 7.8 (3.1 - 9.5)

6
AE-X4M30PU
Operating
Status
Indoor unit
combination Cooling capacity (Btu/h) Power input (W)
Rating (Min. - Max.)
Running curent (A)
Rating (Min. - Max.)
A B C D A B C D Rating ( Min - Max) 208V 230V
2-indoor unit
operation
18 18 * - 14,500 14,500 * - 29,000 (11,500 - 30,200) 3,080 (630 - 3,480) 15.1 (3.6 - 16.9) 13.6 (3.3 - 15.3)
18 15 * - 15,818 13,182 * - 29,000 (11,500 - 30,200) 3,080 (630 - 3,480) 15.1 (3.6 - 16.9) 13.6 (3.3 - 15.3)
18 12 * * 16,440 10,960 * * 27,400 (10,000 - 28,800) 2,930 (630 - 3,320) 14.3 (3.6 - 16.2) 12.9 (3.3 - 14.6)
18 9 * * 17,600 8,800 * * 26,400 (10,000 - 28,800) 2,640 (630 - 3,320) 12.9 (3.6 - 16.2) 11.7 (3.3 - 14.6)
18 7 * * 17,856 6,944 * * 24,800 (10,000 - 28,800) 2,360 (630 - 3,320) 11.5 (3.6 - 16.2) 10.4 (3.3 - 14.6)
15 15 * * 13,700 13,700 * * 27,400 (11,000 - 30,200) 3,070 (660 - 3,590) 15.0 (3.8 - 17.5) 13.6 (3.4 - 15.8)
15 12 * * 14,111 11,289 * * 25,400 (9,900 - 27,400) 2,620 (580 - 3,300) 12.8 (3.3 - 16.1) 11.6 (3.0 - 14.5)
15 9 * * 14,625 8,775 * * 23,400 (9,900 - 27,400) 2,230 (580 - 3,300) 10.9 (3.3 - 16.1) 9.8 (3.0 - 14.5)
15 7 * * 14,864 6,936 * * 21,800 (9,900 - 26,400) 1,980 (580 - 3,020) 9.7 (3.3 - 14.7) 8.7 (3.0 - 13.3)
12 12 * * 11,100 11,100 * * 22,200 (8,300 - 25,600) 2,240 (500 - 3,210) 10.9 (2.9 - 15.6) 9.9 (2.6 - 14.1)
12 9 * * 11,543 8,657 * * 20,200 (8,300 - 24,400) 1,860 (500 - 2,810) 9.1 (2.9 - 13.7) 8.2 (2.6 - 12.4)
12 7 * * 11,747 6,853 * * 18,600 (8,300 - 23,000) 1,630 (500 - 2,450) 7.9 (2.9 - 11.9) 7.2 (2.6 - 10.8)
9 9 * * 9,000 9,000 * * 18,000 (8,300 - 22,200) 1,520 (500 - 2,270) 7.4 (2.9 - 11.1) 6.7 (2.6 - 10.0)
9 7 * * 9,225 7,175 * * 16,400 (8,300 - 20,400) 1,300 (500 - 1,940) 6.3 (2.9 - 9.5) 5.7 (2.6 - 8.6)
7 7 * * 7,400 7,400 * * 14,800 (8,300 - 18,400) 1,100 (500 - 1,620) 5.3 (2.9 - 7.9) 4.8 (2.6 - 7.2)
1-indoor unit
operation
18 * * * 19,200 * * * 19,200 (7,200 - 21,000) 1,810 (500 - 2,190) 8.8 (2.9 - 10.7) 8.0 (2.6 - 9.7)
15 * * * 16,200 * * * 16,200 (7,200 - 18,000) 1,440 (500 - 1,730) 7.0 (2.9 - 8.5) 6.3 (2.6 - 7.6)
12 * * * 12,200 * * * 12,200 (5,800 - 13,200) 1,090 (420 - 1,280) 5.3 (2.4 - 6.3) 4.8 (2.2 - 5.7)
9 * * * 9,700 * * * 9,700 (5,800 - 10,800) 790 (420 - 920) 3.8 (2.4 - 4.5) 3.5 (2.2 - 4.1)
7 * * * 7,800 * * * 7,800 (5,800 - 9,000) 600 (420 - 700) 2.9 (2.4 - 3.4) 2.6 (2.2 - 3.1)
* When connected indoor unit is not in operation.
- When no unit is connected.
HEATING CAPACITY TABLE
Operating
Status
Indoor unit
combination Heating capacity (Btu/h) Power input (W)
Rating (Min. - Max.)
Running curent (A)
Rating (Min. - Max.)
A B C D A B C D Rating ( Min - Max) 208V 230V
4-indoor unit
operation
18 12 7 7 13,500 9,000 5,250 5,250 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
18 9 9 9 13,200 6,600 6,600 6,600 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
18 9 9 7 13,814 6,907 6,907 5,372 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
18 9 7 7 14,488 7,244 5,634 5,634 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
18 7 7 7 15,231 5,923 5,923 5,923 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 15 7 7 11,250 11,250 5,250 5,250 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 12 9 9 11,000 8,800 6,600 6,600 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 12 9 7 11,512 9,209 6,907 5,372 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 12 7 7 12,073 9,659 5,634 5,634 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 9 9 9 11,786 7,071 7,071 7,071 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 9 9 7 12,375 7,425 7,425 5,775 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 9 7 7 13,026 7,816 6,079 6,079 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
15 7 7 7 13,750 6,417 6,417 6,417 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 12 12 9 8,800 8,800 8,800 6,600 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 12 12 7 9,209 9,209 9,209 5,372 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 12 9 9 9,429 9,429 7,071 7,071 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 12 9 7 9,900 9,900 7,425 5,775 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 12 7 7 10,421 10,421 6,079 6,079 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 9 9 9 10,154 7,615 7,615 7,615 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 9 9 7 10,703 8,027 8,027 6,243 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 9 7 7 11,314 8,486 6,600 6,600 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
12 7 7 7 12,000 7,000 7,000 7,000 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
9 9 9 9 8,250 8,250 8,250 8,250 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
9 9 9 7 8,735 8,735 8,735 6,794 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
9 9 7 7 9,281 9,281 7,219 7,219 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
9 7 7 7 9,900 7,700 7,700 7,700 33,000 (12,000 - 37,000) 2,860 (800 - 3,250) 13.9 (4.1 - 15.8) 12.6 (3.7 - 14.3)
7 7 7 7 7,600 7,600 7,600 7,600 30,400 (12,000 - 34,000) 2,520 (800 - 2,950) 12.3 (4.1 - 14.4) 11.1 (3.7 - 13.0)

AE-X4M30PU
7
Operating
Status
Indoor unit
combination Heating capacity (Btu/h) Power input (W)
Rating (Min. - Max.)
Running curent (A)
Rating (Min. - Max.)
A B C D A B C D Rating ( Min - Max) 208V 230V
3-indoor unit
operation
18 18 9 - 13,200 13,200 6,600 - 33,000 (12,000 - 37,000) 2,780 (800 - 3,250) 13.6 (4.1 - 15.8) 12.3 (3.7 - 14.3)
18 18 7 - 13,814 13,814 5,372 - 33,000 (12,000 - 37,000) 2,780 (800 - 3,250) 13.6 (4.1 - 15.8) 12.3 (3.7 - 14.3)
18 15 12 - 13,200 11,000 8,800 - 33,000 (12,000 - 37,000) 2,780 (800 - 3,250) 13.6 (4.1 - 15.8) 12.3 (3.7 - 14.3)
18 15 9 - 14,143 11,786 7,071 - 33,000 (12,000 - 37,000) 2,780 (800 - 3,250) 13.6 (4.1 - 15.8) 12.3 (3.7 - 14.3)
18 15 7 - 14,850 12,375 5,775 - 33,000 (12,000 - 37,000) 2,780 (800 - 3,250) 13.6 (4.1 - 15.8) 12.3 (3.7 - 14.3)
18 12 12 - 13,114 8,743 8,743 - 30,600 (12,000 - 33,400) 2,720 (780 - 3,150) 13.3 (4.0 - 15.3) 12.0 (3.6 - 13.9)
18 12 9 - 14,123 9,415 7,062 - 30,600 (12,000 - 33,400) 2,720 (780 - 3,150) 13.3 (4.0 - 15.3) 12.0 (3.6 - 13.9)
18 12 7 * 14,886 9,924 5,789 * 30,600 (12,000 - 33,400) 2,720 (780 - 3,150) 13.3 (4.0 - 15.3) 12.0 (3.6 - 13.9)
18 9 9 * 15,300 7,650 7,650 * 30,600 (12,000 - 33,400) 2,720 (780 - 3,150) 13.3 (4.0 - 15.3) 12.0 (3.6 - 13.9)
18 9 7 * 16,200 8,100 6,300 * 30,600 (12,000 - 33,400) 2,720 (780 - 3,150) 13.3 (4.0 - 15.3) 12.0 (3.6 - 13.9)
18 7 7 * 17,213 6,694 6,694 * 30,600 (12,000 - 33,400) 2,720 (780 - 3,150) 13.3 (4.0 - 15.3) 12.0 (3.6 - 13.9)
15 15 12 - 11,357 11,357 9,086 - 31,800 (12,000 - 34,200) 2,710 (800 - 3,170) 13.2 (4.1 - 15.4) 12.0 (3.7 - 14.0)
15 15 9 - 12,231 12,231 7,338 - 31,800 (12,000 - 34,200) 2,710 (800 - 3,170) 13.2 (4.1 - 15.4) 12.0 (3.7 - 14.0)
15 15 7 * 12,892 12,892 6,016 * 31,800 (12,000 - 34,200) 2,710 (800 - 3,170) 13.2 (4.1 - 15.4) 12.0 (3.7 - 14.0)
15 12 12 - 11,769 9,415 9,415 - 30,600 (12,000 - 32,400) 2,750 (780 - 3,190) 13.4 (4.0 - 15.5) 12.1 (3.6 - 14.1)
15 12 9 * 12,750 10,200 7,650 * 30,600 (12,000 - 32,400) 2,750 (780 - 3,190) 13.4 (4.0 - 15.5) 12.1 (3.6 - 14.1)
15 12 7 * 13,500 10,800 6,300 * 30,600 (12,000 - 32,400) 2,750 (780 - 3,190) 13.4 (4.0 - 15.5) 12.1 (3.6 - 14.1)
15 9 9 * 13,909 8,345 8,345 * 30,600 (12,000 - 32,400) 2,750 (780 - 3,190) 13.4 (4.0 - 15.5) 12.1 (3.6 - 14.1)
15 9 7 * 14,806 8,884 6,910 * 30,600 (12,000 - 32,400) 2,750 (780 - 3,190) 13.4 (4.0 - 15.5) 12.1 (3.6 - 14.1)
15 7 7 * 15,828 7,386 7,386 * 30,600 (12,000 - 32,400) 2,750 (780 - 3,190) 13.4 (4.0 - 15.5) 12.1 (3.6 - 14.1)
12 12 12 * 10,200 10,200 10,200 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,220) 14.3 (4.0 - 15.7) 13.0 (3.6 - 14.2)
12 12 9 * 11,127 11,127 8,345 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,240) 14.3 (4.0 - 15.8) 13.0 (3.6 - 14.3)
12 12 7 * 11,845 11,845 6,910 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,250) 14.3 (4.0 - 15.8) 13.0 (3.6 - 14.3)
12 9 9 * 12,240 9,180 9,180 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,270) 14.3 (4.0 - 15.9) 13.0 (3.6 - 14.4)
12 9 7 * 13,114 9,836 7,650 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,280) 14.3 (4.0 - 16.0) 13.0 (3.6 - 14.5)
12 7 7 * 14,123 8,238 8,238 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,290) 14.3 (4.0 - 16.0) 13.0 (3.6 - 14.5)
9 9 9 * 10,200 10,200 10,200 * 30,600 (12,000 - 32,400) 2,940 (780 - 3,300) 14.3 (4.0 - 16.1) 13.0 (3.6 - 14.5)
9 9 7 * 11,016 11,016 8,568 * 30,600 (12,000 - 32,400) 2,960 (780 - 3,310) 14.4 (4.0 - 16.1) 13.0 (3.6 - 14.6)
9 7 7 * 11,191 8,704 8,704 * 28,600 (12,000 - 31,600) 2,530 (780 - 3,070) 12.3 (4.0 - 15.0) 11.2 (3.6 - 13.5)
7 7 7 * 8,600 8,600 8,600 * 25,800 (12,000 - 29,200) 2,180 (780 - 2,620) 10.6 (4.0 - 12.8) 9.6 (3.6 - 11.6)
2-indoor unit
operation
18 18 * - 16,500 16,500 * - 33,000 (12,000 - 35,600) 3,040 (850 - 3,570) 14.8 (4.4 - 17.4) 13.4 (3.9 - 15.7)
18 15 * - 18,000 15,000 * - 33,000 (12,000 - 35,600) 3,040 (850 - 3,570) 14.8 (4.4 - 17.4) 13.4 (3.9 - 15.7)
18 12 * * 18,360 12,240 * * 30,600 (12,000 - 31,200) 3,030 (780 - 3,320) 14.8 (4.0 - 16.2) 13.4 (3.6 - 14.6)
18 9 * * 20,400 10,200 * * 30,600 (12,000 - 31,200) 3,030 (780 - 3,320) 14.8 (4.0 - 16.2) 13.4 (3.6 - 14.6)
18 7 * * 21,456 8,344 * * 29,800 (12,000 - 31,200) 2,880 (780 - 3,320) 14.0 (4.0 - 16.2) 12.7 (3.6 - 14.6)
15 15 * * 15,700 15,700 * * 31,400 (12,000 - 34,000) 2,970 (810 - 3,460) 14.5 (4.1 - 16.9) 13.1 (3.8 - 15.2)
15 12 * * 16,667 13,333 * * 30,000 (11,600 - 31,200) 3,110 (780 - 3,490) 15.2 (4.0 - 17.0) 13.7 (3.6 - 15.4)
15 9 * * 17,750 10,650 * * 28,400 (11,600 - 31,200) 2,840 (780 - 3,490) 13.8 (4.0 - 17.0) 12.5 (3.6 - 15.4)
15 7 * * 17,591 8,209 * * 25,800 (11,600 - 31,200) 2,430 (780 - 3,490) 11.9 (4.0 - 17.0) 10.7 (3.6 - 15.4)
12 12 * * 14,000 14,000 * * 28,000 (11,000 - 28,400) 3,040 (760 - 3,240) 14.8 (3.9 - 15.8) 13.4 (3.5 - 14.3)
12 9 * * 14,286 10,714 * * 25,000 (11,000 - 28,400) 2,490 (760 - 3,240) 12.1 (3.9 - 15.8) 11.0 (3.5 - 14.3)
12 7 * * 14,400 8,400 * * 22,800 (11,000 - 28,400) 2,140 (760 - 3,240) 10.4 (3.9 - 15.8) 9.4 (3.5 - 14.3)
9 9 * * 10,700 10,700 * * 21,400 (11,000 - 28,400) 1,980 (770 - 3,240) 9.7 (3.9 - 15.8) 8.7 (3.6 - 14.3)
9 7 * * 10,688 8,313 * * 19,000 (11,000 - 26,000) 1,650 (770 - 2,830) 8.1 (3.9 - 13.8) 7.3 (3.6 - 12.5)
7 7 * * 8,200 8,200 * * 16,400 (11,000 - 22,800) 1,350 (770 - 2,300) 6.6 (3.9 - 11.2) 6.0 (3.6 - 10.2)
1-indoor unit
operation
18 * * * 23,000 * * * 23,000 (11,000 - 25,000) 2,890 (880 - 2,990) 14.1 (4.5 - 14.6) 12.7 (4.1 - 13.2)
15 * * * 19,000 * * * 19,000 (10,000 - 21,600) 2,250 (870 - 2,810) 11.0 (4.5 - 13.7) 9.9 (4.0 - 12.4)
12 * * * 15,600 * * * 15,600 (8,600 - 17,000) 1,930 (850 - 2,340) 9.4 (4.4 - 11.4) 8.5 (3.9 - 10.3)
9 * * * 11,400 * * * 11,400 (8,600 - 15,600) 1,230 (850 - 2,080) 6.0 (4.4 - 10.2) 5.5 (3.9 - 9.2)
7 * * * 8,400 * * * 8,400 (8,600 - 12,000) 850 (850 - 1,370) 4.2 (4.4 - 6.7) 3.8 (3.9 - 6.1)
* When connected indoor unit is not in operation.
- When no unit is connected.

8
AE-X4M30PU
ELECTRICAL PARTS
Fuse 1, 5 — QFS-GA065JBZZ(20A,250V)
Fuse 2 — QFS-GA062JBZZ(3.15A,250V)
Fuse 3, 6 — QFS-GA063JBZZ(2A,250V)
CYCLE PARTS
PARTS MODEL TYPE PARTS CODE
Compressor SNB172EFKMT 17.2cc DC TWIN ROTARY 1200W PCMPRA718JBEZ
Fan motor ARW8404SH DC MOTOR 8Poles, 60W CMOTLB541JBEZ
Refrigerant control Expansion valve (Body) Φ1.8 PVLVRA047JBEZ
Expansion valve (Coil) DC12V RMOTSA050JBZZ
PRESSURE SWITCH ACB-4UB65 OFF:4.5MPa / ON:3.5MPa RBIM-A003JBEZ
Reverse Valve (Body) SHF-7H-34U-P PVLVXA081JBEZ
(Coil) 50/60Hz 220-240V CCIL-A185JBKZ
WIRING DIAGRAMS
C14
IPM
C8 C9 C11 FUSE5
MRY1
PTC1
DC FAN MOTOR
L1
CT1
DB301 U
V
T7
N
20A T8
T9 W
+
+
+
-+
T21 T11
T10
T20
L3
FUSE2
250V
3.15A
NR2
PFC MODULE BOARD
FILTER BOARD
CE011
C1
BL
BN
BK
BCN11
CN11
BK
The voltage is high at C8, C9, C11(electrolytic capacitors) on outdoor unit. For maintenance discharge at C8, C9, C11 to prevent electric shock,
in case that FUSE5(protector) has been fused, the voltage is kept high at C8, C9, C11.
CN8M
CN12A CN12B CN12D CN8A
The 4 LEDs of the display board will all flash synchronously. For patterns No.1, No.2
and No.4, only the LED corresponding with the abnormal unit will flash in the patterns
above, and the LED for the normal unit will flash in the slow flashing cycle.
LED pattern No.
WIRING DIAGRAM
CAUTION
Power factor (PFC)module error
Compressor rotation error
Thermal fuse error of terminal board
Rotation error of the fan motor
EEPROM error
Overheat error (Compressor, Power module)
Example: No.3 Overheat error (Compressor, Power module)
Cycle temperature error
Abnormal wire check
Abnormal AC current
Abnormal signal line
Abnormal comments
Normal
Short circuit of the thermistor
Open circuit of the thermistor
Power module(IPM) abnormality
SW1
DSW1
SW2
PUMP DOWN
WIRE CHECK
LED1A
LED1B
LED1C
LED1D
OFF
1
2ON
(UNIT D)
VT
VT
RD
RD
BL
OR
OR
BK
BN
BL G/Y
G/Y
20A 250V
L4
C2 C3
L5
C4 C5
RD
WT
OR
U
V
W
PFCM
BT11
BT12
YL
BL
TPF
TNF
TL2
TL1
AC1
AC2
9
UNIT D
UNIT C
UNIT B
UNIT A
TH9
TH8
TH7
TH6
YL
BN
WT
BL
CN12C
UNIT D
UNIT C
UNIT B
UNIT A
EXV. EXV.
EXV.
EXV.
CN2
CN6
1
2
3
4
5
8CN3
FUSE6 2A
250V
250V
Pressure switch error
FUSE3
250V
2A
or clock signal error
VALVE
4WAY
RY1
2
1
CN4
PRESSURE
SWITCH
CN15B
BL
BN
RY3
(UNIT C)
(UNIT A) (UNIT B)
T23
T22
BN
BL
BL
BN
RD
OR
GN
BK
BL: BLUE
BK: BLACK
BN: BROWN
GY: GRAY
RD: RED
WT: WHITE
OR: ORANGE
GN: GREEN
YL: YELLOW VT: VIOLET
G(/Y): GREEN/YELLOW
301
BCN13
CN301
The microcomputer’s GND line which
control the thermistor,etc. share the
same line of 330V line. This circuit is
non-insulation type. Do not touch
the control circuit components as it
may result in electrical shock hazard.
Do not earth osilloscope etc. during
measurement, as it may result in
damage.
T15
T13
T14
BK
GY
BN
BL
L1 L1
L2 L2
L1 L1
L2 L2
L1
L2

AE-X4M30PU
9
N
(MONITOR)
(YELLOW)
9
(To F-T11)
(VALVE C)
E
(FLASH WRITER EEPROM)
C
C
(BLUE)
(THERMAL FUSE)
250V/2A
9
(TERMINAL BOARD)
10
DSGY-
1
40
1
1
JBKZ
1
A
(BLUE)
1
250V/2A
B
DIP
1
34
(DISPLAY)
5V
16
2
1
8
MRY_IN(BLUE)
(To PFC-TNF)
9
8
9
9
(RED)
12V
(To CN301)
6
16
D
1
(BLUE)
(WHITE)
(4 WAY VALVE)
(To MRYIN)
C
(To PFC-TPF)
29
5
6
JBKZ
(GRAY)
(VALVE A)
(DC FAN MOTOR)
6
1
(BROWN)
QPWBNA221JBZZ
B
15V
E
1
(To P-AC2)
C
(VALVE D)
1
5
8
(THERMISTOR A)
C
4
FH-IXA
(BROWN)
6
(To F-T10)
1
1
(THERMISTOR M)
B
4
2
(To CN14)
1
1
0V
0V-P
(BLUE)
MRY_OUT(BLACK)
1
B
(ORANGE)
E
250V/3.15A
E
8
B
9
(VALVE B)
1
(GRAY)
(BLUE)
(PRESSURE SWITCH)
FB1
D2
D6
T6
C17
C32
C56
C60
C66
C67
C68
C69
C82
C83
C89
C93
C95
C97
FB3
43
2
PC6
1
R43
R44
R52
R53
R54
R55 R56
R89
R90
R91
R255
C127
C300 C301
C37A
C37C
C38A
C38B
C38C
C38D
C39B C39C C39D
C54B
D18A
D18B
D18C
D18D
D22B
D23D
D24A
D25A
D25D
JP92
OSC1
PC1A
2
3
1
4
PC1B
3
1
4
2
PC1C
32
14
PC2A
2 143
1
2
PC2B
43
PC2C
2
143
PC2D
243
1
PTC1
R106
R31A
R31B R31C
R31D
R32A
R32B
R32C
R32D
R33A
R33B
R33C
R35A
R35C
R96A
R96B
CN12BCN12C
C79
C37B
R35B
JP26
JP25
BT13
IC3
R51
C59
R57
C58
C57
R96C
R96D
C54A
C54C
D23A
3
4
PC1D
2
1
R76
R102
R108
R107
R147
C107
C106
C103
C31
R75
Q4
E
Q3
E
C64
JP78
JP77
JP58
JP66
R73
D25B
D24B
T7
D26
T8
C26
C98
D22D
C126
CN-2
C128
C46
R33D
C30
IC7
R245
R104
D27
R249
ZD3
R250
○
C100
C21
C25
C94
C101
C102
C104
C77
C124
IC5
C123
C16
C37D
R35D
C125
C54D
C74
C90
C138
C130
C132
C131 R247
JP24
C33
JP94
R243
R17
R103
R109
R49 R240 R241
R242
JP23
JP22
JP21
R263
D23B
D24D
D23C
D24C
CN12A
JP7
12
CN15B
12
CN15A(12V)
JP93
C137
R258
R259
1
3CN4
BT15
C27
D5
FU6
R50
R262
CN11
110
C136
CN12D
CN8M
CN8A
R100
R101
C99
C129
R180
FU2
NR2
R237
CT1
R235
Q6
R105
R236
D16
2
4
1
3
PC3
C81
RY1
D14
CN3
C61
JP70
JP65
JP73
T9
JP76
BT14
T13
D17
C48
C45
C47
IC2
C11
BT11
BT12
BT6
T15
C9
250V/20A
FU5
C8
C14
D9
○
○
○
○
○
C52
D8 D10
R261
○
○
○
○
○
C50
C135
R260 R248 R233
D11
C41
C40 C43 C44C42
CN6
○
○
○
○
○
C133
CN2
CN-1
R238
D15
C19
JP69
C134
C72
C55
C70
C71
C122
C53 C51 C49
C10
C105
FB2
26
75
76 51
100
1 25
50
IC1
C18
C84
C85
TR1
IC11
1
BCN14
2
C15
D4
C20
D25C
Q6D
D22A
Q6AQ6BQ6C
D22C
CNM
CND
BCN13
C23
D12
D7
IC4
C24
C39A
IC9
FU3
R234
D13
T14
MRY1
to PFCM PWB AC2 (Gray)
from PFCM PWB
AC1 (Black)
to PFCM PWB TPF (Yellow)
to PFCM PWB TNF (Blue)
to Filter PWB T10 (Brown)
to Filter PWB CN14
to Filter PWB T11 (Blue)
from 4 way Valve
to Main PWB MRY1 (Blue)
from Compressor (W)(Orange)
from Compressor (V)(White)
from Compressor (U)(Red)
from Fan Motor
from Exporsion Valve D
from Exporsion Valve C
from Exporsion Valve B
from Exporsion Valve A
from Terminal Board
Power Supply (Black)
from MAin PWB BT6 (Blue)
from Thermistor
from Suction Thermistor
Comp. Temp.
Heat Exchange Temp.
Outdoor Temp/
Suction
from Terminal Board
Unit D "2", Unit C "2", Unit B "2", UnitA "2", "L1"
from Pressure
Switch
from Display PWB

10
AE-X4M30PU
(FROM TERMINAL BOARD
POWER SUPPLY N)
(BROWN)
INDOOR UNIT 1)
(FROM TERMINAL BOARD (BLUE)
(FROM BCN14)
DIP
(FROM TERMINAL BOARD
QPWBNA223JBZZ
DSGY-
POWER SUPPLY L)
INDOOR UNIT N)
(FROM T13)
(GREEN/YELLOW)
JBKZ
(FROM T14)
(BROWN)
(BLUE)
(BLUE)
(FROM TERMINAL BOARD
(BROWN)
2
21
CN14
R3
C14C
T10
RY3
C11B
250V/20A
FU1
C11C
R1
R2
T4 BT4
C12B
R4
C13B
L5
C13C
BT22
BT20
BT21
BT23
T21
C14B
SA1
C1
C2
C3
C4
T23
L6
L3
C5
C12C
NR1
L4
T22
T11
T20
from Control Box (Green/ Yellow)
from Terminal Board AB (L1)
(Brown)
from Terminal Board
(L2) (Brown)
from Terminal Board AB (L2)
(Blue) from Terminal Board (L1)(Blue) from Main PWB (T14)(Blue)
from Main PWB (T13)(Brown)
to Main PWB (CN11)
from Main PWB
MRY1 OUT (Black)
from Main PWB
BCN13 from Main PWB BT12 (Blue)
from Main PWB BT11 (Yellow)
from Main PWB T15 (Gray)
from PFC coil
from PFC coil

AE-X4M30PU
11
C12B
4700pF
250V C14B
4700pF
250V C12C
4700pF
250V
L3
CN14
1 2
BT4
T4
T21
BT21
T20
BT20
R4
1MΩ
1/2W
C1
1μF
275V
R3 1/2W
1MΩ
L4
275V
C2
1μF
C3
275V
1μF
510KΩ R1 1/4W
510KΩ
R2
1/4W
C5 2.2μF
275V
L5
2.2μF
275V
C4
4700pF 250V C14C
T23
BT23
T22
BT22
L6
PTC1
PFCM301
PR 25
R
26
S
IGBT DRIVER
27
VCC
1
COM
2
3
COM
4
5
VFO
6
CFOD
7
RTH
9
N13
VTH
10
N14
N15 N16
P21
P22
L24
12
NR
19
NR
18
11
NR
20
NR
17
CSC
8
C314
0.1μF
D301 -
+
IC301/B
76
5
BT11 FU520A
250V
250V
FU3 2A
T8
T7
F
CN-2
1
2
3
D8
R46
1KΩ
CN-1
1
3
4
2
10KΩ
R94B
10KΩ
R94C R94D
10KΩ
PNP Q6B
EC
BPNP
Q6C
EC
BPNP
Q6D
EC
B
CND
1 3 4
6 9 5 7 8 2
PC2B 1
2
4 3
PC2C 1
2
4 3
D18A
D18B D18C
D18D
PC2D 1
2
4
3
PNP Q6A
EC
B
IC9/B 1
4 8
-
2
+
3
JP7
CNM
1
2 3
4
Q6
CN6
5
9 1 3
7
10KΩ
R94A
1 2
CN15A
IC5 12
3
CN2
2 1
FB3
CN4
1 3RY1/B
CN3
1 2 3 4
5 8
D27
0.01μF
250V
C13B
C11B
250V
0.01μF 0.01μF
250V
C11C C13C
0.01μF
250V
RY3/B
RY3/A
T13
BT13
D2
BT6
BT15
T15
CT1
BT14
BT12 T9
ZD3
R260
10KΩ-
+
IC11/B
76
5
1000pF
C122
50V
C138
50V
0.01μF
1KΩ
R99 R257
1KΩ
C99
0.1μF
630V 47μF
10V C100
10KΩ
R101
10KΩ
R109
0.01μF
C102
50V
+
100μF
10V
C61
10KΩ
R104
0.1μF
25V
C101
C129
0.033μF
275VAC
C301
0.01μF
50V
FU2 3.15A
250V
D16 D17
R238
39KΩ1/4W
R234
150KΩ
1/2W 1/2W
R235
150KΩ
D15 D13
PC3
1
24
3
0.1μF
25V C93
R52
D11
ZD4
24V
R134
100Ω
0.1uF
C70
50V
0.1uF
50V
C55
D10
100μF
25V
C133
C49
50V
0.1uF
D9 C51
50V 0.1uF
1000pF
C46
50V 0.01μF
50V
C45
+C47
100μF
10V
R76 1KΩ
R73
1KΩ10KΩ
R75
C77
0.1μF
25V
0.1μF
C95
25V
IC1
VCC 1
NMIX 6
PM1 8
PM2 9
PM3 10
PP0 12
PP1 13
PP2 14 PP3 15 PP4 16 PP5 17
VSS 18
VCC 19
PQ0 20
PQ1 21 PQ2 22 PQ3 23 PQ4 24
PQ5 25
P86 2 P90 4
P91 5
PF0 11
P87 3
57 SSV
47 1AP 37 0AP 27 7BP
17 6BP
07 5BP
96 4BP 86 3BP
76 2BP
66 1BP
56 0BP
46 01SSVA
36 2HRVA 26 01CCVA
16 1DP
06 0DP 95 7CP
85 6CP
75 5CP
65 4CP
55 3CP 45 2CP 35 1CP
25 0CP 15 CCV
77 0GP
87 1GP
97 2GP
08 3GP
28 5GP
38 0HP
48 1HP
58 2HP
68 0JP
78 1JP
88 2JP
98 3JP
09 4JP
19 5JP
29 6JP
39 7JP
49 08P
59 18P
69 28P
79 38P
89 48P
99 58P
001 SSV
67 CCV
PS0 26
PS1 27
PS3 29
PS4 30
PS5 31
VCC 32
VCC 33
VSS 34
C 35
PR0 36
PR1 37
PR2 38
PR3 39
PR4 40
PR5 41
MD2 42
MD1 43
MD0 44
X0 45
X1 46
VSS 47
INITX 48
PA2 49
VSS 50
PS2 28
PM0 7
18 4GP
0.01μF
50V
C74
+C94
10V
100μF
R155
4.7KΩ
1KΩ
R152 C132
50V
0.01μF
Q5AE
BC
FB2
1KΩ
F output
R256
C127
25V
0.1μF
+10V
100μF
C128
1KΩ R108 50V
C107
0.01μF
0.01μF
50V
C103
+
C125
10V
100μF 25V
C126
0.1μF
C90
1000pF
50V
D26
R123
10KΩF
F
2KΩ
R143 F
2KΩ
R120
F
20KΩ
R150 R151
F
20KΩ
PC1D
1
24
3
C38D
25V
0.1μF
R31D
C38C
25V
0.1μF
PC1C
1 24
3
PC1B
1 24
3
C38B
25V
0.1μF
PC1A
1 24
3
PC2A 1
2
4 3
C37A
50V
1000pF
50V
C37B
1000pF
C37D
1000pF
50V
250V
FU6
2A
C31
0.1μF
25V
R77
270Ω R78
270Ω
R79
100Ω
100KΩ
R80
OSC1
10MHz
R255
JP92
0.1μF
25V
C124
+
C98
25V
4.7μF
R132
100Ω
R137
100Ω
R136
100Ω
R135
100Ω 1000pF
C44 50V
R96A
2.2KΩ
ΩK2.2 B69R
ΩK2.2 C69R
ΩK2.2 D69R
R54 10KΩ R55 10KΩ
R56 10KΩ R57 10KΩ
C317
10V
1μF
0.1μF
C315
R319
1MΩ
1KΩ
R316
- +
100μF
25V
C304
C303
0.33μF
630V
6.8kΩ
R318
-
+
IC301/A
1
8 4
2
3
10KΩ
R258
C137
50V
0.01μF
R259
10KΩ
1 2
BCN14
CN12D
1
2
3
5
6
4
CN12C
1
2
3
5
6
4
CN12B
1
2
3
5
6
4
CN12A
1
2
3
5
6
4
RY1/A
D23A
D22A
CN8A
1
2
3
4 5 6
7
8
9R62
10KΩ
CN8M1
2 3 4 5
6 7 8 9 10
1 2
CN15B
TR1
9
16 13
11
8
5
1
2
IC2
FB
2CL
3VCC
4D5
S7
S8 VDD
1
FB1
PC6 23
4 1
+
35V
C24
150μF
D12
R88
10KΩR26 F
10KΩ
IC3
D5
C27
Fp022 Vk1
ULN2004L-D16-T
IC7
8
116
9
2
3
4
5
6
710
11
12
13
14
15
AC2
DB301
1
2 3 4 5 6
7 8 9
BCN11
1 2 3 4 5 6
7 8 9
10
CN11
1 2
DSW1
SW1 SW2
510V
NR2
NR1
510V
SA1
R49
C9
C8
750uF 420V
C14 630V
0.1μF
C21
25V
0.1μF
D7 +
C19
35V
150μF
D6
1/4W
5.1KΩ
R233
C105
250V
4700pF 250V
4700pF
C85
R15
470Ω 1/4W
C18
50V
2200pF
D4
- +
2.2μF
50V
C15
1μF
C17 50V
C5650V 1000pF
R51
R53
10KΩ
R263
C50
100μF
25V
100μF
25V
C52
1/4W
33Ω
R161 R162
1/4W
33Ω
33Ω
R47
1/4W
R48
1/4W
33Ω
+C30
100μF
10V
F
3.9KΩ
R249
+
IC11/A
-
13
2
8 4
JP93
Q5B
C
E
B
Q5C
C
E
B
Q5D
C
E
B
R93A
1/4W
2.2k R93B
2.2k
1/4W R93C
1/4W
2.2k R93D
1/4W
2.2k
R92A
1/4W 1k R92B
W4/1 k1 R92C
1k
1/4W R92D
1k
1/4W
D24A
D25A
R153
1KΩ
R154
4.7KΩ
0.1μF
25V
C300
100Ω R180
1W
0.1μF
C60
25V
R245
3.3kΩ
Q3
RN2402(T5L,F,T)
BC
E
C32
25V
0.1μF
C104
25V
0.1μF
R102
10KΩ
R66
10KΩ
R65
10KΩ
10KΩ
R63
10KΩ
R64
1.8KΩ R36A F
R36B
1.8KΩF
R36C
1.8KΩF
R36D
1.8KΩF
C38A
0.1μF
25V
R33AR31A R32A
R31B R32B R33B
R31C R33C
R32C
R32D R33D
C39D
250V
4700pF
C39C
250V
4700pF
C39B 250V
4700pF
C39A
250V
4700pF
MRY1/B
R89
1/4W
1KΩ
F
+
C79
220μ
10V 0.01μF
50V
C97
R305B
180KΩ
1/4W F
180KΩ
R305A
1/4W
F
R305C
180KΩ
F1/4W
R305D
180KΩF
1/4W
R305H
180KΩ1/4W
F
R305F
180KΩ1/4W
F
R305E
180KΩ
1/4W
F
1/4W
180KΩ
R305G
F
R307
1.1KΩ
F
2KΩ
F
R308
AC1
TPF
TNF
180KΩ
R301B
1/4W
F
0.1μF
C311 100pF
C312
2KΩ
R304 F
R303 F
1KΩ
R301G
180KΩ
1/4W
F
R301E
180KΩ
F W4/1
R301C
180KΩ
1/4W
F
R301A
180KΩ
1/4W
F
180KΩ
F
1/4W
R301D
1/4W F
R301H
180KΩ
180KΩ
R301F
F
1/4W
C305
0.1μF C306
25V
0.033μF
R310 10mΩ
R309 10mΩ
R311
1KΩ
50V
1000pF
C313
Q301
C307
25V
0.1μF
- +
100μF
25V
C308
D302
Q4
RN1405(T5L,F,T)
E
BC
6.8kΩ
R100
C26
25V
0.1μF
C25
0.1μF
25V
R24 10KΩ
F
25V
0.1μF
C23
+
C20
680μF
25V
LED1B
LED1D
LED1A
LED1C
+25V
C135
100μF
50V
0.1uF
C136
50V 0.1uF
C53
C43 50V 1000pF
C40 50V
1000pF
C41 50V
1000pF
50V
C42
1000pF
100Ω
R133
C134
50V
1000pF
0.1μF
25V C48
R45
10KΩ
R236
150KΩ
1/2W
R237
150KΩ
1/2W
3.3kΩ
R103
1KΩ
R107
50V
0.01μF
C106
1000pF
C37C
50V
JP94
V
W
U
NWNU NV
CFO
P
CIN
VSC
IPM/A QM1 (PS21A79)
34
36
35
37 38 39
24
25 40
19
IPM/B
QM1(PS21A79)
UP 1
VP1
3
FO 26
VN1
21
VNC
22
VPC
15
VUFB
4
VP1
9VVFB
10
VVFS
12
VP1
14 VWFB 16
VP 7
WN 29
VN 28
WP 13
UN 27
VUFS
6
VWFS
18
VOT
23
0.1μF
C309
0.1μF
25V
C89 R124
100Ω
C71
50V
0.1uF
D24C
D23C
D22C
D25D
D24D
D23D
D22D
D25C
MRY1/A
D25B
D24B
D23B
D22B
50V
C83
1000pF
C82
0.01μF
50V
C81
50V
0.01μF
R127
15.4KΩ
F
R128
15.4KΩ
F50V
0.022μF
C72
R210
R261
62KΩ1/4W
F
R50
1.8KΩF
2.2KΩ
R262 F
+
100μF
10V
C123
R61 R68 R71
R70
R69 C69 C68
C67 C66 C64
R98C R98B
R98D C54D
C54B C54C
C54A
R98A
R97D
10KΩ
R97C 10KΩ R97B 10KΩ
R97A 10KΩ
3.3KΩ
R30D
3.3KΩ
R30C
3.3KΩ
R30B
3.3KΩ
R30A
R34D
56KΩ
56KΩ
R34C
56KΩ
R34B
56KΩ
R34A
R248
10KΩF
C131
0.01μF
50V R247
1.2KΩF
R250
10KΩF
0.01μF
50V
C130
C16
50V
2200pF
R16
261KΩ
F
R14
15KΩ
22KΩ
R105
3.3KΩ
R106
R91
6.49KΩ
F
R147 10KΩ
R90 F
1KΩ
10KΩ
R44
R43
10KΩ
R312
2KΩ
R313
13KΩ
C316
0.1μF
15KΩ R322
F
R320
15KΩ
F
1KΩ
R315
C310 100pF
R314
15KΩ
R35D 4.7KΩ
R35C 4.7KΩ
R35B 4.7KΩ
R35A 4.7KΩ
1 2
3 4 5 6
7 8 9
BCN13
1KΩ
R317
1
2
3 4 5 6
7 8
9
CN301
T14 T6
T11 T10
250V
FU1
20A
TL1 TL2
L1
C33
50V
4.7μF
C11
R321
15KΩ
F
TH6
TH7
TH8
TH9
TH1
TH2
TH3
TH4
R17
300KΩ
R21 2.2KΩR25
0Ω
R23
470Ω
R22
22KΩ
R82
22KΩ
IC4
BAJ5CC0T
3
2
1
15V
DD
Q
Z
I
HH
Q
R
I
HH
DD
R
Z
15V
15V
15V
5V
12V
15V
12V 15V
15V
15V
2 2
A
C
TEMP
FUSE
102?
5V
COMPRESSOR
5V
5V
0V
5V
(SERIAL)
0V
5V
0V
5V
0V
5V 0V
5V
5V
5V
0V
5V
5V
5V
0V
0V
15V
0V
5V 5V
0V 0V
0V
5V
15V
5V
5V
5V
5V
5V
5V
0V
5V
5V
0V
5V
0V
[PASK]
[XNISK]
[VH]
[PH]
[PH]
[BOARD IN]
[XNISK] [XNISK][XNISK] [XNISK]
[VH]
[VH]
[VH]
(4 WAY VALVE)
(TERMINAL BOARD
TEMP FUSE)
(PRESSURE SWITCH B)
(DISPLAY)
WIRE CHECK SW
UNIT C
UNIT B
UNIT A
UNIT D
PUMP DOWN SW
[BOARD IN]
(DISPLAY PWB)
[PNISK]
×3
~C59
5V
2W 1.0KJ ×3
2W 1.0KJ ×3
2W 1.0KJ ×3
0V
5V
5V
(EXPANSION VALVE)
5V
5V
0V
0V
SWITCH A 12V)
(PRESSURE
5V
~R217
1/4W 82KΩF×8
,R240~244
2W 140mΩF ×7
C64,C66,C67,C68,C69
50V 0.01uF
R61,R68,R69,R70,R71
C54A,C54B,C54C,C54D
50V 0.01uF
R98A,R98B,R98C,R98D
6.8KΩF
6.8KΩF
2W 1.0KJ ×3
[BOARD IN]
5V
[PNI]
NOTE: All Resistance that is not indicated watt are 1/10W.
(FILTER PWB)
(PFCM PWB)
(MAIN PWB)
TERMINAL BOARD
2 2
B
D
[PNI]
L1L1 L2L2
L1 L1 L2 L2
L1 L2
[XNISK]
(THERMISTOR A)
(THERMISTOR M)
(FAN MOTOR)
[XNISK]
(Suction UnitA)
(Suction UnitB)
(Suction UnitC)
(Suction UnitD)
(Compressor)
(Heat Exchange)
(Out door Temp)
(Suction)
1: -15°C AUTO OFF SELECT
2: PRE HEAT SELECT
,R254

12
AE-X4M30PU
EXPLANATION OF CIRCUIT AND OPERATION
BLOCK DIAGRAM
CPU
Pump down switch circuit
Unit A thermo. circuit
Unit B thermo. circuit
Thermistor unit A (BL)
Thermistor unit B (WT)
Compressor
CN8A
CN8A
CN8A
Suction thermistor
CN8M
Expansion valve A drive circuit
Expansion valve B drive circuit
4-way valve relay drive circuit 4-way valve
Wire check switch circuit
Position detection circuit
LED drive circuit
Heat exchanger pipe thermo circuit
Compressor thermo circuit
CPU reset circuit
Serial I/O circuit
Power transistor module drive circuit
Outdoor fan motor drive circuit
Power supply
circuit
Expersion valve D drive circuit Expansion valve D
Expansion valve A
Expansion valve B
Expansion valve C
CPU oscillator circuit
AC overcurrent detection circuit
DC overcurrent detection circuit /
Power transistor module overheat
LED
Heat exchanger pipe thermistor (OR)
Compressor thermistor (RED)
Current transformer
Compressor
Power transistor
module
Outdoor fan motor
Smoothing
circuit PFCM
module Filter
circuit AC power
Unit - unit wiring
(AC power and
serial signals)
20 A
Fuse
Outdoor temp. thermo. circuit Outdoor temperature thermistor (GN)
2A
Fuse
3.15 A
Fuse
2 A
Fuse
20 A
Fuse
Expansion valve C drive circuit
DC power supply circuit
Unit C thermo. circuit Thermistor unit C (BN)
Unit D thermo. circuit Thermistor unit D (YL)
DIP SW1
DIP SW2
Suction pipe thermistor (BK) CN8A
Suction pipe thermo circuit
DC over voltage detection circuit

AE-X4M30PU
13
FUNCTIONS
1. FREQUENCY CONTROL
1) AC current peak control
Cooling mode Heating mode
17.6A 18.4A
2) Prevention control of outdoor heat exchanger overheating
If the temperature of the outdoor heat exchanger exceeds the overheating prevention line 1or 2 during cooling, the operating
frequency is lowered by approximately 5 to 15Hz. After that, the frequency is lowered approximately 5Hz once every 60
seconds or approximately 15Hz once every 120 seconds. If the frequency is lowered to minimum frequency without the
temperature of the outdoor heat exchanger decreasing and this condition lasts for 1 minute, the compressor will be stopped.
Overheating Prevention line 1 129.2°F (54°C) Lower 5Hz once every 60 seconds
Overheating Prevention line 2 134.6°F (57°C) Lower 15Hz once every 120 seconds
3) Prevention control of compressor overheating
If the temperature of the compressor exceeds approximately 226.4°F (108°C), the operating frequency is lowered
approximately 5Hz. After that, the frequency is lowered approximately 5Hz once every 60 seconds. When the compressor
temperature drops below approximately 226.4°F (108°C), the frequency is raised approximately 5Hz once every 60 seconds,
and normal operation is restored. If the frequency is lowered to minimum frequency without the temperature of the compressor
decreasing, and this condition lasts for 1 minute, the compressor will be stopped.
4) Prevention control of indoor heat exchanger overheating
Two minutes after room several decrease If the temperature of any of indoor heat exchangers exceeds the overheating prevention
line 1 or 2 during heating, the operating frequency is lowered to minimum frequency. When the temperature of all of indoor heat
exchangers go below [the overheating prevention line 1 -45.5
° F(-7.5 °C)] , the frequency is raised by approximately 5Hz once every
60 seconds, and normal operation is restored. If the condition that the frequency is minimum lasts for 2 minutes, the compressor
will be stopped.
<When normal >
If the temperature of any of indoor heat exchangers exceeds the over-
heating prevention line 1 or 2 during heating, the operating frequency
is lowered by approximately 5 to 15Hz. After that, the frequency is
lowered approximately 5Hz once every 60 seconds or approxi-
mately 15Hz once every 90 seconds. When the temperature of all of
indoor heat exchangers go below [the overheating prevention line 1
-45.5
° F(-7.5 °C)], the frequency is raised by approximately 5Hz once
every 60 seconds, and normal operation is restored. If the condition
that the frequency is minimum lasts for 2 minutes, the compressor will
be stopped.
When ON
(When OFF)
Overheating
prevention
line 1
900
111.2ºF (44°C)
134.6ºF (57°C)
125.6ºF (52°C)
138.2ºF (59°C)
118.4ºF (48°C)
129.2ºF (54°C)
123.8ºF (51°C)
134.6ºF (57°C)
131ºF (55°C)
143.6ºFº (62°C)
116.6ºF (47°C)
140.0ºF (60°C)
2200 5800 7200
Overheating
prevention line 2
2. OVER CURRENT PROTECTION
DC over current detection, AC over current detection To protect against over current due to sudden change in load, the
compressor is stopped if 25A DC is exceeded in the DC section. If the set value of AC current is exceeded in the AC section, the
compressor is stopped. 90 seconds after the compressor has been stopped, another starting try will be made. Three retries are
allowed. On the fourth retry, a complete stop request signal is sent to the indoor unit, and the outdoor unit will remain stopped until
the indoor operation is stopped. DC over current is detected by the power module. AC over current is detected by CT1, on the
outdoor PWB.
Cooling mode Heating mode
18A 18A
3. COMPRESSOR PROTECTION CONTROL
If the temperature of the compressor exceeds 235.4°F (113°C), the compressor is stopped. In this case, the outdoor fan is
not stopped until the temperature of compressor drops below 210.2°F (99°C). In 90 seconds after the compressor is stopped,
if the temperature is below 194°F (90°C), another starting try will be made. Three retries are allowed. On the fourth retry, a
complete stop request signal is sent to the indoor unit, and the outdoor unit will remain stopped until the indoor operation is
stopped.
4. POWER TRANSISTOR MODULE PROTECTION
If the temperature of the chips in the power transistor module exceeds 212°F (100°C), the compressor is stopped. In this
case, the outdoor fan is not stopped until the temperature of power module drops below 185°F (85°C). In 90 seconds after the
compressor is stopped, if the temperature is below 185°F (85°C), another starting try will be made. Three retries are allowed.
On the fourth retry, a complete stop request signal is sent to the indoor unit, and the outdoor unit will remain stopped until the
indoor operation is stopped.

14
AE-X4M30PU
5. SERIAL SIGNALS
Serial signals consist of all 96-bit signals. If the condition as outdoor unit unable to receive a serial signal from the indoor unit
continues for 30 seconds, it closes the expansion valve which corresponds to the room which can not be communicated. If all
indoor units can not communicate with the outdoor unit, the compressor is stopped.
6. THERMISTOR OPEN OR SHORT
When compressor, heat exchanger, outdoor thermistor, suction thermistor (CN8A) are in OPEN or SHORT condition, even if they are
in the condition which an operation signal is transmitted from indoors, the compressor will not start. If any suction thermistors (CN8M)
become OPEN or SHORT resistance, the protective procedure will work only for the cycle corresponding to the malfunctioning suction
thermistor.
7. MISWIRING CHECK
“Mis-wiring check” is conducted by detecting the indoor heat exchanger temp. For example, when the expansion valve for only room
A is open, and the wiring is correct, the indoor heat exchanger temp for room A will reduce. If the wiring is incorrect, the indoor heat
exchanger temp for a different room will reduce.
8. SAFETY TIME
When the unit is operated by the remote control after the breaker is turned on, the safety device of the compressor will work and the
compressor will not operate for 90 seconds.
9. PUMP DOWN SWITCH
When the PUMP DOWN SWITCH (SW1) is pressed for 5 seconds or more, the total A/C system will start its PUMP DOWN
automatically and the compressor frequency will be 40 Hz.
10.CONTROL OF COMPRESSOR AND EXPANSION VALVE
For 90 seconds after turning on the AC power, the compressor will not be activated even if indoor units request the compressor to
do so. If the compressor receives a request from one or more indoor units after 90 seconds have passed, it will be turned on and the
expansion valve corresponding to the requesting indoor unit will be opened. When the indoor unit of a room requests for the cooling
operation to the outdoor unit and it runs responding to the request, requests for the heating can’t be accepted if the indoor units in
other rooms send individual requests. If the indoor unit in another room sends a request for the heating operation, the operation lamp
and timer lamp of the indoor unit in that room start ashing in turn to inform that the unit is in the standby mode. If the operation in
one room is stopped while the indoor unit in another room is in the stand-by mode, the operation mode requested by the indoor unit
which is now in the stand-by mode will be accepted. At this time, the compressor will be temporarily stopped to switch the four- way
valve and restart after 90 seconds. During the cooling or dry operation, the expansion valve corresponding to the indoor unit that is not
running is closed. Therefore, the refrigerant will not ow into those units. However,if the heating operation is in progress, it is possible
that it ows into indoor units which are out of operation depending on the cycle conditions. As a result, the indoor exchanger may be
heated up even if it is not activated. This is not abnormal. When the operations in all rooms are stopped, the compressor is off and the
expansion valves in all rooms are fully opened.
11.DEFROST OPERATION
1) Overview
Defrosting begins during heating if the conditions for compressor
operation time and outdoor heat exchanger temperature are
met. When defrosting begins, the indoor and outdoor fans stop.
Defrosting stops when the temperature of the outdoor heat
exchanger goes above approximately 59°F
(15°C) or defrosting
time exceeds 10 minutes.
Defrost
mask time Defrost mask time Defrost mask time
Heating
begins Defrosting
Max. 10 min. Defrosting Max. 10 min.
2) Defrosting
If the compressor operation time is more than 20 minutes in
the heating mode and the outdoor air temperature and outdoor
heat exchange temperature satisfy the defrosting conditions, the
defrosting operation is started. When the defrosting operation
is started, the indoor fan s tarts to run intermittently. When the
outdoor heat exchanger temperature reaches approx. 59°F
(15°C)
or above or when the defrosting time exceeds 10 minutes, the
defrosting operation is quit.
More than
20 min.
More than
20 min.
Defrosting
Max. 10 min.
Heating
operation
start Defrosting
Max. 10 min.
More than
20 min.

AE-X4M30PU
15
3) During defrosting
When defrosting begins, the compressor stops. Approximately 1 minutes later, the compressor reactivates in the refrigeration
cycle, and the outdoor heat exchanger is defrosted. Each mode is as follows:
The outdoor fan is s topped.
The operating frequency is as shown in the table below.
The indoor fan is s topped.
All expansion valve are open. for 5 minutes 4800 rpm
ater that 4000 rpm
4) Defrost stop
When defrosting time exceeds 10 minutes When the temperature of the outdoor heat exchanger rises above approximately 59°F °C
(15°C)
Defrost stop is determined by either of the above conditions, and the compressor is s topped. At the same time, the outdoor
fan go ON. The compressor is reactivated in the heating cycle 1 minutes after it was stopped, and normal control resumes.
12.5°F(-15°C) AUTO STOP FUNCTION
• During the heating operation, the unit will automatically stop when the
outdoor temperature drops below 5°F(-15°C) to prevent the outdoor unit
from the damage caused by the freezing of the drained water. The unit
will stop its operation for 4 hour and then resume the operation when the
outdoor temperature rises above 7°F(-13.9°C).
• To inactivate this function, slide the SELECT switch(DSW1) #1 to OFF side.
DSW1
OFF
1
2ON
SW1
DSW1
SW2
PUMP DOWN
SELECT
WIRE CHECK
LED1A
LED1B
LED1C
LED1D
OFF
1
2ON
SELECT switch (DSW1)
13.Preheat
When heating is stopped, applying a small amount of voltage to the compressor to make heating start more quickly.
The preheat function will active according to outdoor temperature and compressor temperature.
To inactivate this function, slide the SELECT switch (DSW1) #2 to OFF side.
DSW1
OFF
1
2ON

16
AE-X4M30PU
TROUBLE SHOOTING GUIDE
SELF-DIAGNOSIS FUNCTION
NOTE: WHEN TURN ON THE POWER SUPPLY AGAIN, WAIT MORE THAN 10 MINUTES AFTER TURN OFF TO PRE-
VENT ELECTRIC SHOCK.
Indoor unit
• To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The operation lamp (green), timer lamp (orange) and Plasmacluster lamp (blue) ash to indicate the information of malfunction.
• If the power cord is unplugged or the circuit breaker is turned off, the self-diagnosis memory is lost.
Operation lamp (Green)
Timer lamp (orange)
Plasmacluster lamp (Blue)
AUX
<Display of self-diagnosis result>
The operation lamp (green) and the Plasmacluster lamp (blue) ash in synchronization with the timer lamp (orange).
Timer lamp (1 cycle)
ON
OFF
5-second OFF
1-second
OFF
1-second
OFF
1-second
OFF
1-second
OFF
1-second
ON
1-second
ON
1-second
ON
1-second
ON
1-second
ON
1st 2nd 3rd 4th 5th
Outdoor unit
• The self-diagnosis is indicated the error information by ashing LED1 on the outdoor unit.
• The self-diagnosis of outdoor unit is displayed for about 3-10 minutes. Then, the LED1 returns to normal display.
LED1
2-time
ON
OFF
0.5-second
OFF
0.5-second
OFF
0.5-second
OFF
0.5-second
ON
0.5-second
ON 0.5-second ON 0.5-second ON
3-time
Normal
ON
OFF
0.5-second
OFF
0.5-second
OFF
0.5-second
OFF
0.5-second
ON
0.5-second
ON 0.5-second ON 0.5-second ON
2-time
ON
OFF
0.5-second
OFF
0.5-second
OFF
0.5-second
OFF
0.5-second
ON
0.5-second
ON 0.5-second ON 0.5-second ON 0.5-second ON
3-time
SW1
DSW1
SW2
PUMP DOWN
SELECT
WIRE CHECK
LED1A
LED1B
LED1C
LED1D
OFF
1
2ON

AE-X4M30PU
17
<INDOOR UNIT> ○:1-second ON / 1-second OFF
Problem
symptom
Outdoor unit
indication
(LED1)
Indoor unit Malfunction
No.* Content of diagnosis Check point Action
→Lamp Main Sub Main Sub
Normal
condition Normal blinking O O O O O Timer (Orange) 0 0 Normal
Operation (green)
Plasmacluster (blue)
Indoor and
outdoor units
do not oper-
ate.
1 time O O O O O Timer (Orange) 1 0 Outdoor unit
thermistor
short-circuit
Heat exchanger
thermistor short
circuit error
1) Measure the resistance
of the outdoor unit
thermistors.
(TH2-4, 6-8: Approx. 4.4kΩ at
77°F(25°C))
2) Check the lead wire of the
outdoor unit thermistor
for torn sheath and
shortcircuit.
3) 1) 2):Normal
1) Replace the outdoor unit
thermistor assembly.
2) Replace the outdoor unit
thermistor assembly.
3) Replace the outdoor unit
control PCB assembly.
O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 Outdoor temperature
thermistor short
circuit error
O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 Suction thermistor
short circuit error
O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 3 Suction thermistor
(for unit A, B, C, D)
short circuit error
O Operation (green)
O O Plasmacluster (blue)
Indoor and
outdoor units
do not
operate.
2 time O O O O O Timer (Orange) 2 0 Cycle
temperature Compressor high temperature error 1) Check the outdoor unit air
outlet for blockage.
2) Check if the power supply
voltage is AC 230V at full
power.
3) Check the pipe connections
for refrigerant leaks.
4) Measure resistance of the
outdoor unit compressor
thermistor.
(TH1:Approx.50kΩ at 77°F(25°C)
5) Check the expansion valve
for proper operation.
1) Ensure unobstructed air
ow from the outdoor
unit air outlet.
2) Connect power supply
of proper voltage.
3) Charge the specied
amount of refrigerant.
4) Replace the outdoor unit
compressor thermistor
assembly.
5) Replace the expansion
valve coil, expansion
valve or outdoor unit
control PCB assembly.
O Operation (green)
Plasmacluster (blue)
Indoor unit
operates.
Outdoor
unit does
not operate
temporarily
O O O O O Timer (Orange) 1 Compressor
discharge overheat. (Temporary stop for cycle protection) -
O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 Outdoor unit heat
exchanger overheat. (Temporary stop for cycle protection) -
O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 3 Indoor unit heat
exchanger overheat. (Temporary stop for cycle protection) -
O Operation (green)
O O Plasmacluster (blue)
O O O O O Timer (Orange) 4 IPM high
temperature error Measure resistance of the heat-sink thermistor. -
O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
O O O O O Timer (Orange) 5 IPM high
temperature error Replace the outdoor unit control PCB assembly. -
O Operation (green)
O O Plasmacluster (blue)
O O O O O Timer (Orange) 7 High pressure error Check pressure sensor -
O Operation (green)
O O O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
3 time O O O O O Timer (Orange) 3 0 Temporary
stop Temporary stop due to low temperature
of out door
(Temporary stop for cycle
protection) If the temperature of outdoor is not lower than
5°F(-15°C), check the
outdoor temp. thermistor.
O O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
5-time O O O O O Timer (Orange) 5 0 Outdoor unit
thermistor
open-circuit
Heat exchanger
thermistor open
circuit error
1) Check connector CN8A
and CN8C of the outdoor
unit thermistor for secure
installation.
2) Measure resistance of
outdoor thermistors TH1-
4, 6-8.
3) Check the lead wires of
thermistors TH1- 4, 6-8
on the outdoor unit control
PCB for open-circuit.
4) 1) 2) 3):Normal
1) Correct the installation
2) Replace the outdoor unit
thermistor assembly.
3) Replace the outdoor unit
thermistor assembly.
4) Replace the outdoor unit
control PWB assembly.
O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 Outdoor temperature
thermistor open
circuit error
O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 Suction thermistor
open circuit error
O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 3 Suction thermistor
(for unit A, B, C, D)
open circuit error
O O Operation (green)
O O Plasmacluster (blue)
O O O O O Timer (Orange) 4 Discharge thermistor
open circuit error
O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 5 Heat sink thermistor
open circuit error
O O Operation (green)
O O Plasmacluster (blue)

18
AE-X4M30PU
Problem
symptom
Outdoor unit
indication
(LED1)
Indoor unit Malfunction
No.* Content of diagnosis Check point Action
→Lamp Main Sub Main Sub
Indoor and
outdoor
units do not
operate.
6-time O O O O O Timer (Orange) 6 0 Outdoor unit
DC Current DC over current error Go to “DC Over Current Error (6-0 error)”.
O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 IPM pin level error Check the IPM is attached
correctly to the outdoor unit
IPM PWB.
Replace the outdoor unit
IPM PWB assembly.
O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
7-time O O O O O Timer (Orange) 7 0 Outdoor unit
AC Current AC over current error 1) Ensure unobstructed air ow from the outdoor unit
air outlet.
2) Check the outdoor unit fan
motor.
1) Ensure unobstructed air
ow from the outdoor
unit air outlet.
2) Check the outdoor unit
fan motor.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 AC current error
when OFF 1) IPM continuity check 1) Replace the outdoor IPM PWB
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 AC maximum current
error 1) Ensure unobstructed air ow from the outdoor unit
air outlet.
2) Check the outdoor unit fan
motor.
1) Ensure unobstructed air
ow from the outdoor
unit air outlet.
2) Check the outdoor unit
fan motor.
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 3 AC current
deciency error 1) Replace the outdoor unit control PCB assembly.
2) Charge the specied
amount of refrigerant.
3) Correct refrigerant clogs.
(Stop valve, pipe, expan-
sion valve)
1) Replace the outdoor unit
control PCB assembly.
2) Charge the specied
amount of refrigerant.
3) Correct refrigerant clogs.
(Stop valve, pipe,
expansion valve)
O O O Operation (green)
O O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
8-time O O O O O Timer (Orange) 8 0 Abnormal
wire check Abnormal wire check error 1) Check the expansion valve. (unit A - C)
2) Are four expansion valves
connected by mistake.
3) Check the wiring between
units.
1) Replace the outdoor
control board assembly.
2) Reattach
3) Check the wiring
between units.
O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
9-time O O O O O Timer (Orange) 9 4 Cycle
temperature 4 way valve error or Gas leak error 1) Check the unit thermistor TH2 (exchange) and
TH3 (pipe temperature)
are installed in correct
portions.
2) Check if the refrigerant
volume is abnormally low.
3) Check the 4-way valve for
proper operation.
1) Correct the installation.
2) Change the specied
amount of refrigerant.
3) Replace the 4-way
valve.
O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
10-time O O O O O Timer (Orange) 10 2 EEPROM
error EEPROM (outdoor) data error - Replace the outdoor unit control PWB assembly.
O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
11-time O O O O O Timer (Orange) 11 0 Outdoor unit
DC fan Outdoor unit DC fan rotation error 1)
Check connector CN3 of the
outdoor unit DC fan motor
for secure installation.
2) Check the outdoor unit fan
motor for proper rotation.
3) Check fuse FUSE5.
4) Outdoor unit control PWB
1) Correct the installation.
2) Replace the outdoor unit
fan motor.
3) Replace the outdoor unit
control PWB assembly.
4) Replace the outdoor unit
control PWB assembly.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 Outdoor unit DC fan
drive IC error 1) Check if the fan IPM terminal resistance values
are uniform.
2) Outdoor unit fan motor
continuity check.
1) Replace the outdoor unit
control PWB assembly.
2) Replace the outdoor unit
fan.
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 Outdoor unit DC fan
lock error 1) Check the outdoor unit fan motor for proper rotation.
2) 1): Normal
1) Replace the outdoor unit
control PWB assembly.
2) Replace the outdoor unit
fan.
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 3 Detection error of DC
fan negative rotation
before compressor is
driven
(Temporary stop for DC fan
circuit protection) -
O O O Operation (green)
O O Plasmacluster (blue)
O O O O O Timer (Orange) 4 Detection error of
inverter current for
DC fan
- Replace the outdoor unit
control PWB assembly.
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 5 Outdoor unit DC fan
open connector error 1)
Check connector CN3 of the
outdoor unit DC fan motor
for secure installation.
2) No abnormality found in
above inspection 1).
1) Correct the installation.
2) Replace the outdoor unit
control PWB assembly.
O O O Operation (green)
O O Plasmacluster (blue)

AE-X4M30PU
19
Problem
symptom
Outdoor unit
indication
(LED1)
Indoor unit Malfunction
No.* Content of diagnosis Check point Action
→Lamp Main Sub Main Sub
Indoor and
outdoor
units do not
operate.
12-time O O O O O Timer (Orange) 12 0 Thermal fuse
in terminal
board
Thermal fuse error
in terminal board (for
power supply)
1) Check the thermal fuse in
terminal board (for Power
supply)
2) Check connector CN5 of
the outdoor unit.
3) 1) 2): Normal
1) Replace terminal board
for Power supply.
2) Correct the installation.
3) Replace the outdoor unit
control PCB assembly.
O O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
13-time O O O O O Timer (Orange) 13 0 DC
compressor Compressor startup error 1) Check the colors (red, white, orange) of the com-
pressor cords for proper
connection.
(PWB side, compressor side)
2) Check if the IPM terminal
resistance values are
uniform.
3) Check if outdoor main
relay (MRY1) turns on
and voltage of both end of
the condenser (C10) has
become DC290-330V.
4) 1) 2) 3) : Normal
1) Correct the installation.
(U: Red, V: White, W:
Orange)
2) Replace the outdoor unit
control PWB assembly.
3) Replace the outdoor unit
control PWB assembly.
4) Replace the compres-
sor.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 Compressor rotation
error.
(at120C energizing)
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 Compressor rotation
error
(at 180C energizing)
O O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor units
operate.
OO O O O Timer (Orange) 3 Detection error of
inverter current Check the circuit of detection of inverter current. Replace the outdoor unit control PWB assembly.
O O O Operation (green)
O O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
14-time O O O O O Timer (Orange) 14 0 Outdoor unit
Active lter PFC Module over voltage error 1) Check the connector of PFCM for secure installa-
tion.
2) Check the AC power supply
voltage for uctuation.
3) 1),2) Normal
1) Correct the installation.
2) Connect stable power
supply.
3) Replace the outdoor unit
PFCM PWB or control
PCB assembly.
O O O Operation (green)
Plasmacluster (blue)
O O O O O Timer (Orange) 1 PFC Module clock
error
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 2 PFC Module low
voltage error
O O O Operation (green)
O Plasmacluster (blue)
O O O O O Timer (Orange) 4 PFC Module error
O O O Operation (green)
O Plasmacluster (blue)
Indoor unit
operates.
Outdoor unit
does not
operate.
Lighting or
OFF O O O O O Timer (Orange) 17 0 Wiring between
units
Serial opencircuit 1) Check the wires between
units.
2) Check voltage between N
and 1 the indoor/outdoor
unit terminal boards.
3)
Check the outdoor unit fuse.
4) Check 15-V,13-V and 5-V
voltages on the PCB.
Check resistance between
IPM terminals.
5) Check pins No.5 and 8
of connector CN3 of the
outdoor unit fan motor for
shortcircuit.
6) Outdoor unit control PCB.
1) Connect stable power
supply.
Correct the wiring.
2) Replace the outdoor unit
control PWB assembly.
3) Replace the fuse/out-
door unit control PWB
assembly.
4) Replace the outdoor unit
control PWB assembly.
5) Replace the outdoor unit
fan motor.
6) Replace the outdoor unit
control PWB.
O O Operation (green)
Plasmacluster (blue)
Indoor unit
operates.
Outdoor unit
does not
operate.
Lighting or
OFF O O O O O Timer (Orange) 18 0 Wiring between
units
Serial opencircuit Check the wiring between
units. Correct the wiring.
O O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
O O O O O Timer (Orange 1 Check the wiring between
units. Correct the wiring.
O O Operation (green)
O Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
Normal
blinking or
OFF
O O O O O Timer (Orange) 19 0 Indoor unit
fan Indoor unit fan error 1)
Check the indoor fan motor for
proper rotating operation.
(Check fan lock.)
2) Check the lead wire of the
indoor fan motor for open-
circuit.
3) Check connector ofthe
indoor unit fanmotor for
secureinstallation.
4) 1) 2) 3): Normal
1) Replace the indoor fan
motor.
2) Replace the indoor fan
motor.
3) Correct the installation
of the indoor fan motor
connector.
4) Replace the indoorunit
control PCB.
O O O Operation (green)
Plasmacluster (blue)
Indoor and
outdoor
units do not
operate.
Normal
blinking or
OFF
O O O O O Timer (Orange) 20 0 Indoor unit
control PCB EEPROM data error (EEPROM read data error) Replace the indoor unit control PWB.
O O Operation (green)
Plasmacluster (blue)

20
AE-X4M30PU
*Remark
The malfunction No. is calculated using the following way.
Example)
Indoor unit lamp →Lamp Calculation Main Sub
16 8 4 2 1
Timer (orange) O O O O O
Operation (green) O O 4+1=5 5
Plasmacluster (blue) O 2 2
100
80
60
40
20
0-10 0 10 20 30 40 ºC
Resistance
Thermistor
Room temperature
Heat exchange
Pipe temperature
Color
Yellow
Orange
Black
Room temperature
thermistor TH1 (CN2 3 - 4 )
Heat exchange
thermistor TH2 (CN2 1 - 2 )
Pipe temperature
thermistor TH3 (CN2 5 - 6 )
Tester
CN216
Signal
TH1
TH2
TH3
Figure 1 Temperature properties of indoor thermistors
kΩ
To measure the resistance, first remove
the soldering as shown at right.
Room temperature
thermistor TH1 (Yellow)
77ºF(25ºC) resistance 10 kΩ
Heat exchange thermistor
TH2 (Orange), TH3 (Black)
77ºF(25ºC) resistance 4.431 kΩ
CAUTION: When attaching or removing the board
When operating only the outdoor unit (cooling 40 Hz fixed mode) To make only the outdoor unit run in cooling
mode, and apply a voltage of 230V AC to L1 and L2 on the terminal board and push the pump down switch (SW1).
(Avoid operating the outdoor unit alone for long periods of time.)
from Main PWB
MRY1 OUT (Black)
from Main PWB
BCN13 from Main PWB BT12 (Blue)
from Main PWB BT11 (Yellow)
from Main PWB T15 (Gray)
from PFC coil
from PFC coil