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

11
MUZ-GE15NA
MUY-GE15NA

12
MUZ-GE18NA
MUY-GE18NA

13
MUZ-GE24NA

14
MUY-GE24NA

15
Unit: inch
MUZ-GE09NA MUY-GE09NA
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
(MUZ)
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
(with strainar)
Stop valve
(with service port)
Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
(MUZ)
Refrigerant pipe ø3/8
(with heat insulator)
Refrigerant pipe ø1/4
(with heat insulator)
R.V. coil (MUZ)
heating ON
cooling OFF
Strainer
#100
LEV
Ambient
temperature
thermistor
RT65
Muffler
Capillary tube
O.D. 0.118 ×I.D. 0.079
×9-7/16
(ø3.0 × ø2.0 ×240)
Outdoor heat
exchanger
temperature
thermistor
RT68
Service port
Service port
Muffler
MUZ-GE12NA MUZ-GE15NA MUY-GE12NA MUY-GE15NA
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
(MUZ)
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
(with strainar)
Stop valve
(with service port)
Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
(MUZ)
Refrigerant pipe ø3/8 (GE12NA)
Refrigerant pipe ø1/2 (GE15NA)
(with heat insulator)
Refrigerant pipe ø1/4
(with heat insulator)
R.V. coil (MUZ)
heating ON
cooling OFF
Strainer
#100
Capillary tube
O.D. 0.118 × I.D. 0.071
× 23-5/8
(ø
3.0 × ø 1.8 × 600 ) (×2)
LEV
Ambient
temperature
thermistor
RT65
Muffler
Capillary tube
O.D. 0.118 ×I.D. 0.079
×9-7/16
(ø3.0 × ø2.0 ×240)
Outdoor heat
exchanger
temperature
thermistor
RT68
Muffler
Service port
Service port
6REFRIGERANT SYSTEM DIAGRAM

16
MUZ-GE18NA MUY-GE18NA
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
(MUZ)
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
(with strainar)
Stop valve
(with service port)
Capillary tube
O.D. 0.142 × I.D. 0.094
× 1-31/32
(ø 3.6 × ø 2.4 × 50)
Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating (MUZ)
Refrigerant pipe ø 1/2
(with heat insulator)
Refrigerant pipe ø 1/4
(with heat insulator)
LEV
R.V. coil (MUZ)
heating ON
cooling OFF
Muffler
#100
Receiver
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
Strainer
#100
Service port
Service port
Unit: inch
MUZ-GE24NA MUY-GE24NA
Service
port
Service
port
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
(MUZ)
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
Stop valve
(with service port)
Capillary tube
O.D.0.157 × I.D.0.094
× 3-15/16
(ø 4.0 × ø 2.4 × 100) Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating (MUZ)
Refrigerant pipe
ø 5/8
(with heat insulator)
Refrigerant pipe ø 3/8
(with heat insulator)
LEV
R.V. coil (MUZ)
heating ON
cooling OFF
Muffler
#100
Strainer
#100
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
Strainer
#100

17
Max. Length
A
Max. Height
difference
B
Indoor
unit
Outdoor unit
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
Refrigerant piping: ft. Piping size O.D: in.
Max. Length
A
Max. Height difference
BGas Liquid
MUZ-GE09/12/15NA
MUY-GE09/12/15NA 65 40 3/8 (GE09/12) 1/2 (GE15) 1/4
MUZ-GE18NA
MUY-GE18NA 100 50 1/2
MUZ-GE24NA
MUY-GE24NA 100 50 5/8 3/8
ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)
NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.
Model Outdoor unit
precharged
Refrigerant piping length (one way): ft.
25 30 40 50 60 65
MUZ-GE09NA
MUY-GE09NA 1 lb. 12 oz.
0 1.62 4.86 8.10 11.34 12.96
MUZ-GE12NA
MUY-GE12NA 2 lb. 9 oz.
MUZ-GE15NA
MUY-GE15NA
Calculation: X oz. = 1.62/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
Model Outdoor unit
precharged
Refrigerant piping length (one way): ft.
25 30 40 50 60 70 80 90 100
MUZ-GE18NA
MUY-GE18NA 3 lb. 7 oz. 0 1.08 3.24 5.40 7.56 9.72 11.88 14.04 16.20
Calculation: X oz. = 1.08/5 oz. / ft. × (Refrigerant piping length (ft.) - 25)
NOTE: Refrigerant piping exceeding 33 ft. requires additional refrigerant charge according to the calculation.
Model Outdoor unit
precharged
Refrigerant piping length (one way): ft.
33 40 50 60 70 80 90 100
MUZ-GE24NA
MUY-GE24NA 4 lb. 3 oz. 0 4.14 10.06 15.98 21.90 27.82 33.74 39.66
Calculation: X oz. = 2.96/5 oz. / ft. × (Refrigerant piping length (ft.) - 33)

18
Model
Indoor air Outdoor intake air DB temperature (˚F)
IWB (˚F) 75 85 95 105 115
TC SHC TPC TC SHC TPC TC SHC TPC TC SHC TPC TC SHC TPC
MUZ-GE09NA
MUY-GE09NA
71 11.0 7.6 0.59 10.3 7.1 0.64 9.7 6.6 0.69 9.0 6.2 0.73 8.3 5.7 0.76
67 10.4 8.6 0.55 9.7 8.0 0.61 9.0 7.4 0.66 8.4 6.9 0.70 7.7 6.3 0.73
63 9.8 9.4 0.53 9.1 8.7 0.58 8.5 8.1 0.63 7.7 7.3 0.67 7.0 6.7 0.70
MUZ-GE12NA
MUY-GE12NA
71 14.7 8.9 0.85 13.7 8.3 0.94 12.9 7.8 1.01 12.0 7.3 1.06 11.0 6.7 1.10
67 13.9 10.3 0.81 13.0 9.6 0.89 12.0 8.9 0.96 11.2 8.3 1.02 10.3 7.6 1.07
63 13.1 11.4 0.77 12.1 10.6 0.85 11.3 9.9 0.92 10.3 9.0 0.98 9.4 8.2 1.02
MUZ-GE15NA
MUY-GE15NA
71 17.2 11.4 0.96 16.0 10.7 1.05 15.1 10.0 1.13 14.0 9.3 1.19 12.9 8.6 1.24
67 16.2 13.0 0.91 15.1 12.1 1.00 14.0 11.2 1.08 13.0 10.4 1.14 12.0 9.6 1.20
63 15.3 14.2 0.86 14.1 13.2 0.96 13.2 12.3 1.03 12.0 11.2 1.10 10.9 10.2 1.14
MUZ-GE18NA
MUY-GE18NA
71 21.1 12.2 1.46 19.7 11.4 1.60 18.5 10.7 1.72 17.2 9.9 1.81 15.8 9.1 1.89
67 20.0 14.2 1.38 18.6 13.2 1.52 17.2 12.2 1.64 16.0 11.4 1.74 14.7 10.4 1.82
63 18.7 15.8 1.31 17.4 14.7 1.45 16.2 13.6 1.57 14.7 12.4 1.67 13.4 11.3 1.74
MUZ-GE24NA
MUY-GE24NA
71 27.6 17.0 1.60 25.8 15.9 1.76 24.2 14.9 1.89 22.5 13.9 1.99 20.7 12.8 2.07
67 26.1 19.6 1.51 24.3 18.2 1.67 22.5 16.9 1.80 20.9 15.7 1.91 19.2 14.4 2.00
63 24.5 21.7 1.44 22.7 20.1 1.59 21.2 18.7 1.72 19.2 17.0 1.84 17.6 15.5 1.91
NOTE: 1. IWB: Intake air wet-bulb temperature
TC: Total Capacity (×103Btu/h)
SHC: Sensible Heat Capacity (×103Btu/h)
TPC: Total Power Consumption (kW)
2. SHC is based on 80˚F of indoor Intake air DB temperature.
7-1. PERFORMANCE DATA
1) COOLING CAPACITY
7DATA
MUZ-GE09NA MUZ-GE12NA MUZ-GE15NA MUZ-GE18NA MUZ-GE24NA
MUY-GE09NA MUY-GE12VA MUY-GE15VA MUY-GE18VA MUY-GE24VA
2) COOLING CAPACITY CORRECTIONS
Refrigerant piping length (one way: ft.)
25 (std.) 40 65 100
MUZ-GE09NA
MUY-GE09NA
MUZ-GE12NA
MUY-GE12NA
MUZ-GE15NA
MUY-GE15NA
MUZ-GE18NA
MUY-GE18NA
1.0 0.954 0.878 —
MUZ-GE24NA
MUY-GE24NA 1.0 0.954 0.878 0.771

19
3) HEATING CAPACITY (MUZ)
Model
Indoor air Outdoor intake air WB temperature (˚F)
IDB (˚F) 5 152535434555
TC TPC TC TPC TC TPC TC TPC TC TPC TC TPC TC TPC
MUZ-GE09NA
75 4.8 0.45 6.3 0.57 7.9 0.67 9.4 0.74 10.6 0.78 11.0 0.79 12.4 0.82
70 5.2 0.43 6.7 0.55 8.2 0.65 9.6 0.72 10.9 0.76 11.2 0.78 12.7 0.81
65 5.5 0.41 6.9 0.52 8.6 0.63 10.0 0.70 11.2 0.74 11.6 0.75 13.0 0.79
MUZ-GE12NA
75 6.3 0.69 8.4 0.87 10.4 1.02 12.5 1.14 14.0 1.20 14.5 1.22 16.4 1.26
70 6.8 0.66 8.9 0.84 10.8 1.00 12.7 1.11 14.4 1.17 14.8 1.19 16.8 1.24
65 7.2 0.63 9.1 0.81 11.3 0.97 13.2 1.08 14.8 1.14 15.3 1.16 17.1 1.22
MUZ-GE15NA
75 7.9 0.63 10.4 0.79 13.1 0.93 1.56 1.03 17.6 1.09 18.1 1.10 20.5 1.14
70 8.6 0.60 11.1 0.76 13.5 0.91 15.9 1.01 18.0 1.06 18.5 1.08 21.0 1.12
65 9.0 0.57 11.3 0.73 14.1 0.87 16.5 0.98 18.5 1.03 19.1 1.05 21.4 1.10
MUZ-GE18NA
75 9.1 0.64 11.9 0.81 14.9 0.95 17.8 1.06 20.1 1.12 20.7 1.13 23.5 1.18
70 9.8 0.62 12.7 0.78 15.5 0.93 18.2 1.04 20.6 1.09 21.2 1.11 24.0 1.16
65 10.3 0.59 13.0 0.75 16.2 0.90 18.8 1.01 21.2 1.06 21.8 1.08 24.5 1.13
MUZ-GE24NA
75 12.1 1.38 16.0 1.74 20.0 2.05 23.9 2.28 26.9 2.40 27.7 2.43 31.5 2.53
70 13.1 1.32 17.0 1.68 20.7 2.00 24.4 2.22 27.6 2.34 28.4 2.39 32.2 2.48
65 13.8 1.26 17.4 1.61 21.7 1.93 25.3 2.16 28.4 2.28 29.3 2.32 32.8 2.43
NOTE: 1. IDB: Intake air dry-bulb temperature
TC: Total Capacity (x103Btu/h)
TPC: Total Power Consumption (kW)
2. Above data is for heating operation without any frost.
How to operate with fixed operational frequency of the compressor.
1. Press the EMERGENCY OPERATION switch on the front of the indoor unit, and select either EMERGENCY COOL
mode or EMERGENCY HEAT mode before starting to operate the air conditioner.
2. The compressor starts with operational frequency.
3. The fan speed of the indoor unit is High.
4. This operation continues for 30 minutes.
5. In order to release this operation, press the EMERGENCY OPERATION switch twice or once, or press any button on
the remote controller.
7-2. PERFORMANCE CURVE
Cooling
71
0.8
67
63
0.7
0.6
0.5
Indoor intake air WB temperature (°F)
SHF at rating condition = 0.76
= 307 CFM
Airflow
65 75 85 95 105 115
Outdoor intake air DB temperature (°F)
Total power consumption
(kW)
71
63
67
1.2
1.1
1.0
0.9
0.8
0.7
Indoor intake air WB temperature (°F)
1.3
SHF at rating condition = 0.73
= 350 CFM
Airflow
65 75 85 95 105 115
Outdoor intake air DB temperature (°F)
Total power consumption
(kW)
MUZ-GE09NA
MUY-GE09NA
MUZ-GE12NA
MUY-GE12NA
Cooling capacity ( at Rated frequency)
0.9
1.0
1.1
1.2
1.3
1.4
1.5
14 23 32 41 50 59 68 77 86 95 104 113
Outdoor intake air Dry-bulb temperature(°F)
Capacity correction factors
79
75
68
64
72
Indoor intake air Wet-bulb
temperature( F)
Indoor air Wet-bulb temperature
difference (°F)

20
75
70
65
Indoor intake air DB temperature (°F)
= 413 CFM
Airflow
155253545556570
Outdoor intake air WB temperature (°F)
0.4
0.6
0.8
1.0
1.1
Total power consumption
(kW)
Heating (MUZ) MUZ-GE09NA
MUZ-GE12NA
This value of frequency is not the same as the actual frequency in operating. Refer to 7-5 and 7-6 for the relationships
between frequency and capacity.
MUZ-GE15NA
75
70
65
Indoor intake air DB temperature (°F)
= 413 CFM
Airflow
155253545556570
Outdoor intake air WB temperature (°F)
0.6
0.5
0.8
0.7
1.0
0.9
1.2
1.1
1.3
1.4
Total power consumption
(kW)
75
70
65
Indoor intake air DB temperature (°F)
= 463 CFM
Airflow
155253545556570
Outdoor intake air WB temperature (°F)
0.9
0.6
1.2
1.5
1.8
1.9
Total power consumption
(kW)
MUZ-GE24NA
MUY-GE24NA
71
67
63
65 75 85 95 105 115
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
Indoor intake air WB temperature (°F)
SHF at rating condition = 0.75
= 634 CFM
Airflow
Outdoor intake air DB temperature (°F)
Total power consumption
(kW)
Indoor air Dry-bulb temperature
difference (°F)
Outdoor intake air Wet-bulb temperature (°F)
-4 5 142332415059
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
Heating capacity ( at Rated frequency)
Capacity correction factor
59
68
79
Indoor intake air Dry-bulb temperature ( F)
MUZ-GE15NA
MUY-GE15NA
71
67
63
1.4
1.3
1.2
1.1
1.0
0.9
0.8
Indoor intake air WB temperature (°F)
SHF at rating condition = 0.80
= 498 CFM
Airflow
65 75 85 95 105 115
Outdoor intake air DB temperature (°F)
Total power consumption
(kW)
MUZ-GE18NA
MUY-GE18NA
71
67
63
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
Indoor intake air WB temperature (°F)
SHF at rating condition = 0.71
= 498 CFM
Airflow
65 75 85 95 105 115
Outdoor intake air DB temperature (°F)
Total power consumption
(kW)