Mitsubishi Mr.Slim MUY-GE09NA User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS····················· 3
3. SPECIFICATION················································ 4
4. OUTLINES AND DIMENSIONS ························ 7
5. WIRING DIAGRAM············································ 8
6. REFRIGERANT SYSTEM DIAGRAM··············11
7. DATA································································ 13
8. ACTUATOR CONTROL··································· 22
9. SERVICE FUNCTIONS ··································· 23
10. TROUBLESHOOTING····································· 23
11. DISASSEMBLY INSTRUCTIONS···················· 40
Models
MUZ-GE09NA
MUZ-GE12NA
MUZ-GE15NA
MUZ-GE18NA
MUY-GE09NA
MUY-GE12NA
MUY-GE15NA
MUY-GE18NA
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
PARTS CATALOG (OBB549)

2
MUZ-GE09NA
MUZ-GE12NA
MUZ-GE15NA
MUZ-GE18NA
MUY-GE09NA
MUY-GE12NA
MUY-GE15NA
MUY-GE18NA
1. New model
1TECHNICAL CHANGES

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

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 cc. (Model) 320 (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 ARI 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 cc. (Model) 450 (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 ARI 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
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

7
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

8
MUZ-GE09NA MUZ-GE12NA
5WIRING DIAGRAM
MUY-GE09NA MUY-GE12NA

9
MUZ-GE15NA
MUY-GE15NA

10
MUZ-GE18NA
MUY-GE18NA