Mitsubishi Electric Mr.Slim MUZ-GE09NA User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS····················· 3
3. SPECIFICATION················································ 4
4. OUTLINES AND DIMENSIONS ························ 8
5. WIRING DIAGRAM·········································· 10
6. REFRIGERANT SYSTEM DIAGRAM ············· 15
7. DATA································································ 18
8. ACTUATOR CONTROL··································· 30
9. SERVICE FUNCTIONS ··································· 31
10. TROUBLESHOOTING····································· 31
11. DISASSEMBLY INSTRUCTIONS···················· 49
Models
MUZ-GE09NA
MUZ-GE12NA
MUZ-GE15NA
MUZ-GE18NA
MUZ-GE24NA
MUY-GE09NA
MUY-GE12NA
MUY-GE15NA
MUY-GE18NA
MUY-GE24NA
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Indoor unit service manual
MSZ-GE•NA MSY-GE•NA Series (OBH548)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
TM
HFC
utilized
R410A
No. OBH549
REVISED EDITION-B
PARTS CATALOG (OBB549)
Revision B:
• Descriptions regarding the outdoor fan motor
have been corrected.
Please void OBH549 REVISED EDITION-A.
MUZ-GE09/12/15NA
MUY-GE09/12/15NA

2
MUZ-GE09NA
MUZ-GE12NA
MUZ-GE15NA
MUZ-GE18NA
MUZ-GE24NA
MUY-GE09NA
MUY-GE12NA
MUY-GE15NA
MUY-GE18NA
MUY-GE24NA
1. New model
1TECHNICAL CHANGES
Revision B:
• Descriptions regarding the outdoor fan motor have been corrected.
Revision A:
• MUZ-GE24NA and MUY-GE24NA have been added.

3
MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA
MUY-GE09NA MUY-GE12NA MUY-GE15NA
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
MUZ-GE18NA MUY-GE18NA
Piping
Air outlet
Drain hose
Drain outlet
Air inlet
(back and side)
2PART NAMES AND FUNCTIONS
MUZ-GE24NA MUY-GE24NA
Piping
Air outlet
Drain outlet
Air inlet
(back and side)
Drain hose

4
Outdoor unit model MUZ-GE09NA MUY-GE09NA MUZ-GE12NA MUY-GE12NA
Capacity
Rated (Minimum~Maximum)
Cooling 1 Btu/h 9,000
( 3,800 ~ 12,200 )
9,000
( 3,800 ~ 12,200 )
12,000
( 3,800 ~ 13,600 )
12,000
( 3,800 ~ 13,600 )
Heating 47 1 Btu/h 10,900
( 4,500 ~ 14,100 ) —14,400 ( 5,500 ~ 18,100 ) —
Capacity Heating 17 2 Btu/h 8,700 — 11,200 —
Power consumption
Rated (Minimum~Maximum)
Cooling 1 W 660 (205~1,200) 660 (205~1,200) 960 (205~1,300) 960 (205~1,300)
Heating 47 1 W 760 (255~1,200) — 1,170 (340~1,660) —
Power consumption Heating 17 2 W 950 — 1,200 —
EER 1
[SEER] 3 Cooling 13.6 [ 21.0 ] 13.6 [ 21.0 ] 12.5 [ 20.5 ] 12.5 [ 20.5 ]
HSPF IV 4 Heating 10.0 — 10.0 —
COP Heating 1 4.20 — 3.61 —
Power supply V , phase , Hz 208/230 , 1 , 60
Max. fuse size (time delay) A 15
Min. circuit ampacity A 12 12 12 12
Fan motor F.L.A 0.50
Compressor
Model KNB073FQDHC KNB092FQAHC
R.L.A 6.6 4.9 6.6 4.9
L.R.A 8.2 6.1 8.2 6.1
Refrigeration oil
(Model) L 0.32 (NEO22)
Refrigerant control Linear expansion valve
Sound level 1Cooling dB(A) 46 46 49 49
Heating dB(A) 50 — 51 —
Defrost method Reverse cycle
Dimensions
W in. 31-1/2
D in. 11-1/4
H in. 21-5/8
Weight Ib. 66 77
External finish Munsell 3Y 7.8/1.1
Remote controller Wireless type
Control voltage
(by built-in transformer) VDC 12 - 24
Refrigerant piping Not supplied
Refrigerant pipe size
(Min. wall thickness)
Liquid in. 1/4 (0.0315)
Gas in. 3/8 (0.0315)
Connection method Indoor Flared
Outdoor Flared
Between the indoor &
outdoor units
Height difference ft. 40
Piping length ft. 65
Refrigerant charge (R410A) 1 lb. 12 oz. 2 lb. 9 oz.
NOTE: Test conditions are based on AHRI 210/240.
1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB) Rated frequency
(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB Rated frequency
2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB Maximum frequency
3SPECIFICATION

5
Outdoor unit model MUZ-GE15NA MUY-GE15NA MUZ-GE18NA MUY-GE18NA
Capacity
Rated (Minimum~Maximum)
Cooling 1 Btu/h 14,000
( 3,100 ~ 18,200 )
14,000
( 3,100 ~ 18,200 )
17,200
( 3,700 ~ 18,700 )
17,200
( 3,700 ~ 18,700 )
Heating 47 1 Btu/h 18,000
( 4,800 ~ 20,900 ) —21,600 ( 3,500 ~ 25,200 ) —
Capacity Heating 17 2 Btu/h 15,900 — 17,200 —
Power consumption
Rated (Minimum~Maximum)
Cooling 1 W 1,080 (160 ~ 2,000) 1,080 (160 ~ 2,000) 1,640 (240 ~ 2,070) 1,640 (240 ~ 2,070)
Heating 47 1 W 1,600 (270 ~ 2,010) — 1,900 (230 ~ 2,680) —
Power consumption Heating 17 2 W 1,950 — 2,080 —
EER 1 [SEER] 3 Cooling 13.0 [ 21.0 ] 13.0 [ 21.0 ] 10.5 [19.2] 10.5 [19.2]
HSPF IV 4 Heating 10.0 — 10.0 —
COP Heating 1 3.30 — 3.33 —
Power supply V , phase , Hz 208/230 , 1 , 60
Max. fuse size (time delay) A 15
Min. circuit ampacity A 12 14
Fan motor F.L.A 0.50 0.93
Compressor
Model SNB130FQBH
R.L.A 7.4 6.8 10.0 10.0
L.R.A 9.3 8.5 12.5 12.5
Refrigeration oil
(Model) L 0.45 (NEO22)
Refrigerant control Linear expansion valve
Sound level 1Cooling dB(A) 49 49 54 54
Heating dB(A) 51 — 56 —
Defrost method Reverse cycle
Dimensions
W in. 31-1/2 33-1/16
D in. 11-1/4 13
H in. 21-5/8 33-7/16
Weight Ib. 80 119
External finish Munsell 3Y 7.8/1.1
Remote controller Wireless type
Control voltage
(by built-in transformer) VDC 12 - 24
Refrigerant piping Not supplied
Refrigerant pipe size
(Min. wall thickness)
Liquid in. 1/4 (0.0315)
Gas in. 1/2 (0.0315)
Connection method Indoor Flared
Outdoor Flared
Between the indoor &
outdoor units
Height difference ft. 40 50
Piping length ft. 65 100
Refrigerant charge (R410A) 2 lb. 9 oz. 3 lb. 7 oz.
NOTE: Test conditions are based on AHRI 210/240.
1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB) Rated frequency
(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB Rated frequency
2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB Maximum frequency

6
Outdoor unit model MUZ-GE24NA MUY-GE24NA
Capacity
Rated (Minimum~Maximum)
Cooling 1 Btu/h 22,500
(8,200 ~ 31,400)
22,500
(8,200 ~ 31,400)
Heating 47 1 Btu/h 27,600
(7,500 ~ 36,900) —
Capacity Heating 17 2 Btu/h 24,600 —
Power consumption
Rated (Minimum~Maximum)
Cooling 1W 1,800 (570 ~ 3,580) 1,800 (570 ~ 3,580)
Heating 47 1 W
2,340 (520 ~ 3,650) —
Power consumption Heating 17 2 W 3,290 —
EER 1 [SEER] 3 Cooling 12.5 [19.0] 12.5 [19.0]
HSPF IV 4 Heating 10.0 —
COP Heating 1 3.46 —
Power supply V , phase , Hz 208/230 , 1 , 60
Max. fuse size (time delay) A 20
Min. circuit ampacity A 17.1
Fan motor F.L.A 0.93
Compressor
Model SNB172FQKMT
R.L.A 12.9
L.R.A 16.1
Refrigeration oil
(Model) L 0.40 (FV50S)
Refrigerant control Linear expansion valve
Sound level 1Cooling dB(A) 55 55
Heating dB(A) 55 —
Defrost method Reverse cycle
Dimensions
W in. 33-1/16
D in. 13
H in. 34-5/8
Weight Ib. 119
External finish Munsell 3Y 7.8/1.1
Remote controller Wireless type
Control voltage
(by built-in transformer) VDC 12-24
Refrigerant piping Not supplied
Refrigerant pipe size
(Min. wall thickness)
Liquid in. 3/8 (0.0315)
Gas in. 5/8 (0.0315)
Connection method Indoor Flared
Outdoor Flared
Between the indoor &
outdoor units
Height difference ft. 50
Piping length ft. 100
Refrigerant charge (R410A) 4 lb. 3 oz.
NOTE: Test conditions are based on AHRI 210/240.
1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB) Rated frequency
(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB Rated frequency
2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB Maximum frequency

7
Test condition
ARI Mode Test Indoor air condition (°F) Outdoor air condition (°F)
Dry bulb Wet bulb Dry bulb Wet bulb
SEER
(Cooling)
"A-2" Cooling Steady State
at rated compressor Speed 80 67 95 (75)
"B-2" Cooling Steady State
at rated compressor Speed 80 67 82 (65)
"B-1" Cooling Steady State
at minimum compressor Speed 80 67 82 (65)
"F-1" Cooling Steady State
at minimum compressor Speed 80 67 67 (53.5)
"E-V" Cooling Steady State
at Intermediate compressor Speed 5 80 67 87 (69)
HSPF
(Heating)
(MUZ)
"H1-2" Heating Steady State
at rated compressor Speed 70 60 47 43
"H3-2" Heating
at rated compressor Speed 70 60 17 15
"H0-1" Heating Steady State
at minimum compressor Speed 70 60 62 56.5
"H1-1" Heating Steady State
at minimum compressor Speed 70 60 47 43
"H2-V" Heating
at Intermediate compressor Speed 5 70 60 35 33
5: At Intermediate compressor Speed
= ("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed".
3, 4
(2) OPERATION
Mode Condition
Intake air temperature (°F)
Indoor Outdoor
DB WB DB WB
Cooling
Standard temperature 80 67 95 —
Maximum temperature 90 73 115 —
Minimum temperature 67 57 14 —
Maximum humidity 78 % —
Heating
(MUZ)
Standard temperature 70 60 47 43
Maximum temperature 80 67 75 65
Minimum temperature 70 60 -4 -5
3-1. OPERATING RANGE
(1) POWER SUPPLY
Rated voltage Guaranteed voltage (V)
Outdoor unit
208/230 V
1 phase
60 Hz
Min. 187 208 230 Max. 253

8
Unit: inch
MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA
MUY-GE09NA MUY-GE12NA MUY-GE15NA
Liquid pipe :1/4 (flared)
Gas pipe :3/8 (flared) (GE09/12)
1/2 (flared) (GE15)
6-23/32
2
5-7/8
2-23/32
1-3/4
15-3/4
12 ~ 12-3/4
13-9/16
11/16
1-9/16
7/8
21-5/8
11-1/32
13/32
31-1/2
19-11/16
5-15/16
11-29/32
17/3229/32 11-1/4
Air in
handle
Air in
Air out
2- 3/8 13/16 Oval hole
Drain hole 1-5/8
REQUIRED SPACE Basically open 4 inch or more
without any obstruction in front
and on both sides of the unit.
14 in. or more
8 in. or more
4 in. or more
4 in. or more
Open two sides of left,
right, or rear side.
MUZ-GE18NA MUY-GE18NA
20-9/32
14-3/16
Air in
11-25/32
2-19/32
Air in
Air out
19-11/16
33-1/16
13
2
4-25/32
33-7/16
16-15/16
3-3/16
4-3/8
× 13/16 slot
1-11/32
1-9/16
Drain 3 holes
(ø1
-5/16)
30°
35°
2-9/16
Liquid:1/4(flared)
Gas :1/2(flared)
3-9/16
8-11/32
Open as a rule
20 inch or more if
the front and both
sides are open
4 inch or more/
8 inch or more if
there are obstacles
to both sides
Open as a rule
20 inch or more if the back,
both sides and top are open
REQUIRED SPACE
14 in. or more
4 in. or more
4OUTLINES AND DIMENSIONS

9
16-7/16
1-9/16
1-5/8
Drain hole
6-7/8 19-11/16
13
2
Air in
Air out
2-holes 13/32 13/16
14-3/16
33-1/16
4-5/16
3-3/16
34-5/8
17-25/32
Service panel
3-29/32
6-1/2
7-11/16
35
44
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) Ø3/8
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) Ø5/8
14 in. or more
4 in. or more
REQUIRED SPACE
20 in. or more
4 in. or more
20 in. or more
Unit: inch
MUZ-GE24NA
MUY-GE24NA

10
MUZ-GE09NA MUZ-GE12NA
5WIRING DIAGRAM
MUY-GE09NA MUY-GE12NA