Table of Contents
Advertisement
OUTDOOR UNIT
SERVICE MANUAL
Models
MUZ-GS09NA
MUZ-GS12NA
MUZ-GS15NA
MUZ-GS18NA
MUZ-GS24NA
MUZ-GS30NA
MUZ-GS30NA2
MUZ-GS36NA
MUZ-GS36NA2
MUZ-GS09NAH
MUZ-GS12NAH
MUZ-GS15NAH
MUZ-GS18/24/30/36NA MUZ-GS18/24/30/36NAH
MUZ-GS18/24NAHZ
MUY-GS18/24/30/36NA
MUZ-GS30/36NA2
MUZ-GS30/36NAH2
MUY-GS30/36NA2
MUZ-GS18NAH
-
U1
MUZ-GS24NAH
-
U1
MUZ-GS30NAH
-
U1
MUZ-GS30NAH2
-
U1
MUZ-GS36NAH
-
U1
MUZ-GS36NAH2
-
U1
MUZ-GS09NAHZ
-
U1
MUZ-GS12NAHZ
-
U1
MUZ-GS15NAHZ
-
U1
MUZ-GS18NAHZ
-
U1
MUZ-GS24NAHZ
-
U1
-
U1
Revision B:
• MUZ-GS09/12/15/18/24NA -
MUZ-GS09/12/15/18/24NAH -
MUZ-GS09/12/15/18/24NAHZ -
MUY-GS09/12/15/18/24NA -
MUZ-GS30/36NA2 -
and MUY-GS30/36NA2 -
OBH875 REVISED EDITION-A is void.
HFC
utilized
R410A
MUY-GS09NA
-
U1
MUY-GS12NA
-
U1
MUY-GS15NA
-
U1
MUY-GS18NA
-
U1
MUY-GS24NA
-
U1
MUY-GS30NA
-
U1
MUY-GS30NA2
-
U1
MUY-GS36NA
-
U1
MUY-GS36NA2
-
U1
-
U1
-
U1
Indoor unit service manual
MSZ-GS•NA, MSY-GS•NA Series (OBH874)
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································4
4. OUTLINES AND DIMENSIONS ··················· 10
5. WIRING DIAGRAM ··································· 12
6. REFRIGERANT SYSTEM DIAGRAM ··········· 21
7. DATA ······················································ 26
8. ACTUATOR CONTROL ····························· 57
9. SERVICE FUNCTIONS ······························ 58
10. TROUBLESHOOTING ······························· 59
11. DISASSEMBLY INSTRUCTIONS ················· 87
PARTS CATALOG (OBB875)
,
U1
,
U1
,
U1
,
U1
, MUZ-GS30/36NAH2 -
U1
U1
have been added.
U1
No. OBH875
REVISED EDITION-B
-
U1
-
U1
-
U1
-
U1
-
U1
-
U1
-
U1
-
U1
-
U1
Advertisement
Table of Contents
Related Manuals for Mitsubishi Electric MUZ-GS09NA
Summary of Contents for Mitsubishi Electric MUZ-GS09NA
- Page 1 MUZ-GS30/36NA2 - , MUZ-GS30/36NAH2 - and MUY-GS30/36NA2 - have been added. OBH875 REVISED EDITION-A is void. OUTDOOR UNIT No. OBH875 utilized REVISED EDITION-B SERVICE MANUAL R410A Models MUZ-GS09NA MUZ-GS18NAH MUY-GS09NA MUZ-GS12NA MUZ-GS24NAH MUY-GS12NA MUZ-GS15NA MUZ-GS30NAH MUY-GS15NA MUZ-GS18NA MUZ-GS30NAH2 MUY-GS18NA MUZ-GS24NA...
- Page 2 TECHNICAL CHANGES MUZ-GS30NA - MUZ-GS30NAH - MUZ-GS36NA - MUZ-GS36NAH - MUY-GS30NA - MUY-GS36NA - 1. New model MUZ-GS09NA - MUZ-GS09NAH - MUZ-GS09NAHZ - MUZ-GS12NA - MUZ-GS12NAH - MUZ-GS12NAHZ - MUZ-GS15NA - MUZ-GS15NAH - MUZ-GS15NAHZ - MUZ-GS18NA -...
- Page 3 PART NAMES AND FUNCTIONS MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA Air inlet (back and side) Piping Air outlet Drain hose Drain outlet MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2...
- Page 4 SPECIFICATION MUZ-GS09NA Outdoor unit model MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA Cooling * Btu/h 9,000 (3,600 – 12,200) Capacity Rated (Minimum – Maximum) Heating 47 * Btu/h 10,900 (3,600 – 15,900) 9,600 (3,600 – 15,900) Capacity Heating 17 * Btu/h 6,500 (10,200) 5,700 (11,500)
- Page 5 MUZ-GS12NA MUZ-GS15NA Outdoor unit model MUZ-GS12NAH MUZ-GS12NAHZ MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS12NA MUY-GS15NA Cooling * Btu/h 12,000 (1,500 – 13,600) 14,000 (3,100 – 18,200) Capacity 14,400 12,300 18,000 14,000 Rated (Minimum – Maximum) Heating 47 * Btu/h (1,500 – 18,100) (3,600 – 18,100) (4,800 –...
- Page 6 MUZ-GS18NA MUZ-GS24NA Outdoor unit model MUZ-GS18NAH MUZ-GS18NAHZ MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS18NA MUY-GS24NA Cooling * Btu/h 18,000 (5,800 – 22,000) 22,400 (8,200 – 31,400) NA:21,600 Capacity 19,000 27,600 21,200 Rated (Minimum – Maximum) Heating 47 * Btu/h NAH:20,600 (6,600 – 25,000) (7,500 – 31,400) (7,500 –...
- Page 7 MUZ-GS30NA MUZ-GS36NA Outdoor unit model MUY-GS30NA MUY-GS36NA MUZ-GS30NAH MUZ-GS36NAH 32,000/33,200 Cooling * Btu/h 30,700 (10,300 – 30,700) (10,300 – 32,000)/(10,300 – 33,200) Capacity Rated (Minimum – Maximum) 32,600 35,200 Heating 47 * Btu/h – – (9,800 – 34,000) (9,800 – 36,000) Capacity Heating 17 * Btu/h...
- Page 8 MUZ-GS30NA2 MUZ-GS36NA2 Outdoor unit model MUY-GS30NA2 MUY-GS36NA2 MUZ-GS30NAH2 MUZ-GS36NAH2 Cooling * Btu/h 30,600(10,300-30,700) 33,200 (10,300 – 33,200) Capacity 32,600 35,200 Rated (Minimum – Maximum) Heating 47 * Btu/h – – (9,800 – 34,000) (9,800 – 36,000) Capacity Heating 17 * Btu/h 20,000 (20,800) –...
- Page 9 Test condition *3, *4 AHRI Indoor air condition (°F) Outdoor air condition (°F) Mode Test 210/240 Dry bulb Wet bulb Dry bulb Wet bulb “A-Full” Cooling Steady State (75) at rated compressor speed “B-Full” Cooling Steady State (65) at rated compressor speed SEER “B-Low”...
- Page 10 OUTLINES AND DIMENSIONS MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA Unit: inch REQUIRED SPACE 4 in. (100 mm) or more when front and sides of the unit are clear (GS09/12/15NA) (GS09/12/15NAH, GS09/12/15NAHZ) When any 2 sides of left, right...
- Page 11 MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 Unit: inch REQUIRED SPACE 4 in OR MORE. 14 in OR MORE. 16-7/16 AIR IN ↓ DRAIN HOLE ø1-21/32 → 20 in OR MORE.
- Page 12 WIRING DIAGRAM MUZ-GS09NA MUZ-GS12NA MUZ-GS15NA OBH875B...
- Page 13 MUZ-GS09NAH MUZ-GS09NAHZ MUZ-GS12NAH MUZ-GS12NAHZ MUZ-GS15NAH MUZ-GS15NAHZ OBH875B...
- Page 14 MUY-GS09NA MUY-GS12NA MUY-GS15NA OBH875B...
- Page 15 MUZ-GS18NA MUZ-GS18NAH OBH875B...
- Page 16 MUY-GS18NA MUZ-GS18NAHZ MUZ-GS24NAH MUZ-GS24NAHZ OBH875B...
- Page 17 MUZ-GS24NA MUY-GS24NA OBH875B...
- Page 18 MUZ-GS30NA MUZ-GS36NA MUZ-GS30NAH MUZ-GS36NAH OBH875B...
- Page 19 MUY-GS30NA MUY-GS36NA MUZ-GS30NA2 MUZ-GS36NA2 OBH875B...
- Page 20 MUZ-GS30NAH2 MUZ-GS36NAH2 MUY-GS30NA2 MUY-GS36NA2 OBH875B...
- Page 21 REFRIGERANT SYSTEM DIAGRAM MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA Unit: Inch (mm) MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA Refrigerant pipe ø3/8 (ø9.52) (GS09/12) ø1/2 (ø12.7) (GS15) 4-way valve (with heat insulator) Muffler Outdoor heat exchanger Stop valve temperature (with service port)
- Page 22 MUZ-GS18NAHZ MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA Service port Unit: inch (mm) (high pressure) Refrigerant pipe ø1/2 (ø12.7) (GS18) Muffler ø5/8 (ø15.88) (GS24) with #100 mesh (with heat insulator) strainer 4-way valve Stop Muffler valve Outdoor Discharge Flared connection heat Ambient temperature (MUZ only exchanger...
- Page 23 MUZ-GS30NA2 MUZ-GS30NAH2 MUZ-GS36NA2 MUZ-GS36NAH2 Unit: inch (mm) Service port (high pressure) Muffler Refrigerant pipe ø5/8 (ø15.88) 4-way valve (with heat insulator) Strainer #100 Stop valve Outdoor Discharge Flared connection heat Ambient temperature exchanger temperature Service port Defrost thermistor thermistor (low pressure) thermistor RT62 RT61...
- Page 24 MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE Refrigerant piping: ft. Piping size O.D: in. Max. Height difference Model Max. Length Liquid MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH...
- Page 25 ADDITIONAL REFRIGERANT CHARGE (R410A: oz.) NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation. Refrigerant piping length (one way): ft. Outdoor unit Model precharged MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH 2 lb. 9 oz. 1.08 3.24...
- Page 26 DATA MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 7-1. PERFORMANCE DATA 1) COOLING CAPACITY Outdoor intake air DB temperature (˚F)
- Page 27 Outdoor intake air DB temperature (˚F) Indoor air Model IWB (˚F) MUZ-GS09NA 0.77 0.65 0.77 0.67 MUZ-GS09NAH 0.90 0.62 0.90 0.65 MUY-GS09NA MUZ-GS09NAHZ 1.03 0.60 1.03 0.62 MUZ-GS12NA 12.0 0.64 1.02 11.0 0.64 1.06 MUZ-GS12NAH 11.2 0.77 0.98 10.3 0.77 1.02...
-
Page 28: Table Of Contents
2) COOLING CAPACITY CORRECTIONS Refrigerant piping length (one way: ft.) 25 (std.) MUZ-GS09NA MUY-GS09NA MUZ-GS09NAH MUY-GS12NA MUZ-GS09NAHZ MUY-GS15NA MUZ-GS12NA MUZ-GS12NAH 0.988 0.967 MUZ-GS12NAHZ MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUZ-GS18NA MUY-GS18NA MUZ-GS18NAH 0.985 0.963 0.933 MUZ-GS18NAHZ MUZ-GS24NA MUY-GS24NA MUZ-GS24NAH 0.983 0.956 0.921 MUZ-GS24NAHZ... - Page 29 4) HEATING CAPACITY Outdoor intake air WB temperature (˚F) Indoor air Model IDB (˚F) 0.42 0.54 0.63 0.70 10.6 0.74 11.0 0.75 12.4 0.78 MUZ-GS09NA 0.41 0.52 0.62 0.68 10.9 0.72 11.2 0.73 12.7 0.76 0.39 0.50 0.59 10.0 0.67 11.2...
- Page 30 7-2. PERFORMANCE CURVE Cooling Cooling capacity (at Rated frequency) Indoor intake air Wet-bulb temperature( F) Outdoor intake air DB temperature(°F) MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS09NA MUY-GS12NA SHF at rating condition = 0.90 SHF at rating condition = 0.77 Airflow...
- Page 31 MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA SHF at rating condition = 0.75 = 631 CFM Airflow Outdoor intake air DB temperature (°F) MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 SHF at rating condition = 0.72 SHF at rating condition = 0.72 Airflow = 823 CFM Airflow = 839 CFM Outdoor intake air DB temperature (°F)
-
Page 32: Muz-Gs12Na
Heating Heating capacity (at Rated frequency) Outdoor intake air WB temperature (°F) MUZ-GS09NA MUZ-GS09NAH = 390 CFM = 390 CFM Airflow Airflow Outdoor intake air WB temperature (°F) Outdoor intake air WB temperature (°F) MUZ-GS09NAHZ Airflow = 390 CFM Outdoor intake air WB temperature (°F) -
Page 33: Muz-Gs15Na
MUZ-GS15NA MUZ-GS15NAH Airflow = 437 CFM Airflow = 437 CFM Outdoor intake air WB temperature (°F) Outdoor intake air WB temperature (°F) MUZ-GS15NAHZ = 437 CFM Airflow Outdoor intake air WB temperature (°F) MUZ-GS18NA MUZ-GS18NAH Airflow = 629 CFM Airflow = 629 CFM Outdoor intake air WB temperature (°F) Outdoor intake air WB temperature (°F) -
Page 34: Muz-Gs24Nah
MUZ-GS24NA MUZ-GS24NAH Airflow = 701 CFM Airflow = 701 CFM Outdoor intake air WB temperature (°F) Outdoor intake air WB temperature (°F) MUZ-GS24NAHZ = 701 CFM Airflow Outdoor intake air WB temperature (°F) MUZ-GS30NA MUZ-GS30NAH = 803 CFM = 803 CFM Airflow Airflow Outdoor intake air WB temperature (°F) -
Page 35: Muz-Gs36Na2
MUZ-GS30NA2 MUZ-GS30NAH2 = 816 CFM = 816 CFM Airflow Airflow Outdoor intake air WB temperature (°F) Outdoor intake air WB temperature (°F) MUZ-GS36NA2 MUZ-GS36NAH2 Airflow = 816 CFM Airflow = 816 CFM Outdoor intake air WB temperature (°F) Outdoor intake air WB temperature (°F) This value of frequency is not the same as the actual frequency in operating. - Page 36 7-3. CONDENSING PRESSURE Cooling Data are based on the condition of indoor humidity 50 %. Air flow should be set to High speed. MUZ-GS09NA MUZ-GS09NAH MUY-GS09NA (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115...
- Page 37 MUZ-GS12NA MUZ-GS12NAH MUY-GS12NA (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUZ-GS12NAHZ (psig) (psig) (°F) 95 100 105 110 115 (°F) 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUZ-GS15NA MUZ-GS15NAH MUY-GS15NA (psig)
- Page 38 MUZ-GS18NA MUZ-GS18NAH MUY-GS18NA (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUZ-GS18NAHZ (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUZ-GS24NA MUZ-GS24NAH MUY-GS24NA (psig)
- Page 39 MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA (psig) (psig) (°F) 95 100 105 110 115 (°F) 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUZ-GS30NA2 MUZ-GS30NAH2...
- Page 40 MUZ-GS36NA2 MUZ-GS36NAH2 (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature MUY-GS36NA2 (psig) (psig) (°F) (°F) 95 100 105 110 115 95 100 105 110 115 Outdoor ambient temperature Outdoor ambient temperature OBH875B...
- Page 41 Heating Data are based on the condition of outdoor humidity 75%. Air flow should be set to High speed. Data are for heating operation without any frost. MUZ-GS09NA MUZ-GS09NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS09NAHZ...
- Page 42 MUZ-GS12NA MUZ-GS12NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS12NAHZ (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS15NA MUZ-GS15NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS15NAHZ (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature OBH875B...
- Page 43 MUZ-GS18NA MUZ-GS18NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS18NAHZ (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS24NA MUZ-GS24NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS24NAHZ (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature OBH875B...
- Page 44 MUZ-GS30NA MUZ-GS30NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS36NA MUZ-GS36NAH (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS30NA2 MUZ-GS30NAH2 (psig) (psig) (°F) (°F) Outdoor ambient temperature Outdoor ambient temperature MUZ-GS36NA2 MUZ-GS36NAH2 (psig) (psig) (°F) (°F) Outdoor ambient temperature...
-
Page 45: Muz-Gs09Na
208/230, 1, 60 Input 0.021 0.023 0.021 0.023 0.021 Fan motor current 0.23/0.21 0.24/0.22 0.23/0.21 0.24/0.22 0.23/0.21 MUZ-GS09NA Outdoor unit MUZ-GS09NAHZ MUY-GS09NA MUZ-GS09NAH Power supply V, phase, Hz 208/230, 1, 60 208/230, 1, 60 208/230, 1, 60 Input 0.564 0.697 0.564... -
Page 46: Muz-Gs12Na
Model MSZ-GS12NA MSZ-GS12NA MSY-GS12NA Item Unit COOL HEAT COOL HEAT COOL Capacity Btu/h 12,000 14,400 12,000 12,300 12,000 — 0.77 — 0.77 — 0.77 Input 0.92 0.92 0.83 0.92 Rated frequency 47.5 45.5 Indoor unit MSZ-GS12NA MSZ-GS12NA MSY-GS12NA Power supply V, phase, Hz 208/230, 1, 60 208/230, 1, 60... -
Page 47: Muz-Gs15Na
Model MSZ-GS15NA MSZ-GS15NA MSY-GS15NA Item Unit COOL HEAT COOL HEAT COOL Capacity Btu/h 14,000 18,000 14,000 14,000 14,000 — — — Input 1.14 Rated frequency 57.5 Indoor unit MSZ-GS15NA MSZ-GS15NA MSY-GS15NA Power supply V, phase, Hz 208/230, 1, 60 208/230, 1, 60 208/230, 1, 60 Input 0.045... -
Page 48: Muz-Gs18Na
Model MSZ-GS18NA MSZ-GS18NA MSY-GS18NA Item Unit COOL HEAT COOL HEAT COOL Capacity Btu/h 18,000 19,000 18,000 19,000 18,000 — 0.77 — 0.77 — 0.77 Input 1.34 1.34 1.34 1.34 1.34 Rated frequency Indoor unit MSZ-GS18NA MSZ-GS18NA MSY-GS18NA Power supply V, phase, Hz 208/230, 1, 60 208/230, 1, 60 208/230, 1, 60... -
Page 49: Muz-Gs24Na
Model MSZ-GS24NA MSZ-GS24NA MSY-GS24NA Item Unit COOL HEAT COOL HEAT COOL Capacity Btu/h 22,500 27,600 22,500 20,800 22,500 — 0.75 — 0.75 — 0.75 Input 2.34 1.52 Rated frequency 81.5 Indoor unit MSZ-GS24NA MSZ-GS24NA MSY-GS24NA Power supply V, phase, Hz 208/230, 1, 60 208/230, 1, 60 208/230, 1, 60... - Page 50 Model MSZ-GS30NA MSY-GS30NA MSZ-GS36NA MSY-GS36NA Item Unit Cooling Heating Cooling Cooling Heating Cooling Capacity Btu/h 30,700 32,600 30,700 32,000/33,200 35,200 32,000/33,200 — 0.72 — 0.72 0.69 — 0.69 Input 3.32 3.34 3.32 3.63/3.77 3.74 3.63/3.77 Rated frequency Indoor unit MSZ-GS30NA MSY-GS30NA MSZ-GS36NA MSY-GS36NA...
- Page 51 Model MSZ-GS30NA2 MSY-GS30NA2 MSZ-GS36NA2 MSY-GS36NA2 Item Unit COOL HEAT COOL COOL HEAT COOL Capacity Btu/h 30,600 32,600 30,600 33,200 35,200 33,200 — 0.72 — 0.72 0.69 — 0.69 Input 3.32 3.34 3.32 3.77 3.74 3.77 Rated frequency Indoor unit MSZ-GS30NA2 MSY-GS30NA2 MSZ-GS36NA2 MSY-GS36NA2...
- Page 52 7-5. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY MUZ-GS09NA MUZ-GS09NAH MUY-GS09NA MUZ-GS09NA MUZ-GS09NAH Correction of Cooling capacity Correction of Cooling total input Correction of Heating capacity Correction of Heating total input (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor...
- Page 53 MUZ-GS15NA MUZ-GS15NAH MUY-GS15NA MUZ-GS15NA MUZ-GS15NAH Correction of Cooling capacity Correction of Cooling total input Correction of Heating capacity Correction of Heating total input (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor MUZ-GS15NAHZ Correction of Cooling capacity...
-
Page 54: Muz-Gs24Nahz
MUZ-GS24NA MUZ-GS24NAH MUY-GS24NA MUZ-GS24NA MUZ-GS24NAH Correction of Cooling capacity Correction of Cooling total input Correction of Heating capacity Correction of Heating total input (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor MUZ-GS24NAHZ Correction of Cooling capacity... - Page 55 MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA Correction of Cooling capacity Correction of Cooling total input Correction of Heating total input Correction of Heating capacity (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA (208V) Correction of Cooling capacity...
-
Page 56: Muz-Gs30Na Muz-Gs30Na2
MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS30NA2 MUZ-GS30NAH2 Correction of Cooling capacity Correction of Cooling total input Correction of Heating capacity Correction of Heating total input (Hz) (Hz) (Hz) (Hz) The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor The operational frequency of compressor MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 MUZ-GS36NA2 MUZ-GS36NAH2... - Page 57 ACTUATOR CONTROL MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 8-1. OUTDOOR FAN MOTOR CONTROL The fan motor turns ON/OFF, interlocking with the compressor.
- Page 58 SERVICE FUNCTIONS MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 9-1. CHANGE IN DEFROST SETTING Changing defrost finish temperature <JS>...
- Page 59 TROUBLESHOOTING MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 10-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage.
- Page 60 10-2. FAILURE MODE RECALL FUNCTION Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (10-3.) disappears, the memorized failure details can be recalled. 1.
- Page 61 2. Flow chart of the detailed outdoor unit failure mode recall function Operational procedure The outdoor unit might be abnormal. Check if outdoor unit is abnormal according to the following procedures. Make sure that the remote controller is set to the failure mode recall function. *1.
- Page 62 NOTE: Blinking patterns of this mode differ from the ones 3. Table of outdoor unit failure mode recall function of TROUBLESHOOTING CHECK TABLE (10-3.). The left lamp of the Indoor/outdoor Outdoor unit OPERATION Abnormal point LED indication unit failure Condition Remedy failure mode INDICATOR...
- Page 63 NOTE: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (10-3.). The left lamp of the Indoor/outdoor Outdoor unit OPERATION Abnormal point LED indication unit failure Condition Remedy failure mode INDICATOR (Failure mode/protection) (Outdoor P.C. board) mode recall recall function lamp...
- Page 64 10-3. TROUBLESHOOTING CHECK TABLE Abnormal point/ Symptom LED indication Condition Remedy Condition Outdoor unit 1-time blink every Outdoor power Overcurrent protection cut-out operates 3 consecutive times • Reconnect connector of does not 2.5 seconds system within 1 minute after the compressor gets started. compressor.
- Page 65 Abnormal point/ Symptom LED indication Condition Remedy Condition Outdoor unit 1-time blink Deceleration of the GS09/12/15/18 When the input current exceeds approximately The unit is normal, but check the operates. 2.5 seconds OFF operational 10A (GS09)/10.5A (GS12/15/18), compressor following. • Check if indoor filters are frequency of the frequency lowers.
- Page 66 10-4. TROUBLESHOOTING CRITERION OF MAIN PARTS MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 Part name...
- Page 67 Part name Check method and criterion Figure Measure the resistance using a multimeter. [Temperature: 14 - 104°F (-10 - 40°C)] Normal (Ω) Color of lead wire Expansion valve coil RED – ORN (LEV) RED – WHT (+12V) 37 - 54 RED –...
- Page 68 10-5. TROUBLESHOOTING FLOW A How to check inverter/compressor Disconnect the connector between the compressor and the power module (IC700). Check the voltage between terminals. See 10-5. “Check of open phase”. Are the voltages balanced? Replace the inverter P.C. board. Check the compressor. See 10-5.
- Page 69 D Check of compressor winding ●Disconnect the connector between the compressor and the power module (IC700), and measure the resistance between the compressor terminals. <<Measurement point>> At 3 points *Measure the resistance between the lead wires at 3 points. BLK-WHT BLK-RED WHT-RED <<Judgement>>...
- Page 70 G Check of outdoor thermistors Disconnect the connector of thermistor in the inverter P.C. board (see below table), and measure the resistance of thermistor. Replace the thermistor except RT64. Is the resistance of thermistor normal? When RT64 is abnormal, replace the inverter P.C. (Refer to 10-6.1.) board.
- Page 71 H Check of R.V. coil MUZ-GS09/12/15/18 * First of all, measure the resistance of R.V. coil to check if the coil is defective. Refer to 10-4. * In case CN721 is disconnected or R.V. coil is open, voltage is generated between the terminal pins of the connector although no signal is being transmitted to R.V.
- Page 72 I Check of outdoor fan motor Disconnect the connectors CN931 and CN932 from the inverter P.C. board. Check the connection between the connector CN931 and CN932. Is the resistance between each termi- nal of outdoor fan motor normal? (Refer to 10-4.) Disconnect CN932 from the inverter P.C.
- Page 73 J Check of power supply Disconnect the connector between the compressor and the power module (IC700). Rectify indoor/outdoor Turn ON power supply and press the emergency operation switch. connecting wire. Does the left lamp of the Is there voltage 208/230 V AC Replace the indoor OPERATION INDICATOR lamp on between the indoor terminal...
- Page 74 K Check of LEV (Expansion valve) Turn ON the power supply. <Preparation of the remote controller> MSZ-GS24NA While pressing both Operation select button and MSY-GS24NA TEMP / TOO COOL button on the remote controller MSZ-GS06/09/12/15NA MSZ-GS18NA MSZ-GS30/36NA2 MSZ-GS30/36NA at the same time, press RESET button. MSY-GS30/36NA2 MSY-GS09/12/15NA MSY-GS18NA...
- Page 75 L Check of inverter P.C. board Check the outdoor fan motor. (Refer to 10-5. .) Is the fuse (F901) blown on the inverter P.C. board? Check the connection of the connectors (CN931, CN932) of the outdoor fan motor. If the connection is poor, make it correct. Operate the outdoor unit by starting EMERGENCY OPERATION.
- Page 76 M How to check miswiring and serial signal error MUZ-GS09/12/15NA Turn OFF the power supply. MUY-GS09/12/15NA Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring.
- Page 77 MUZ-GS18/24NA MUY-GS18/24NA Turn OFF the power supply. Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring. Press the emergency operation switch once. Does the OPERATION INDICATOR lamp light up? <Confirmation of the power to the indoor unit>...
- Page 78 MUZ-GS30/36NA MUY-GS30/36NA MUZ-GS30/36NA2 Turn OFF the power supply. MUY-GS30/36NA2 Is there rated voltage AC in Check the power supply. the power supply? Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and Check the wiring. Press the emergency operation switch once.
- Page 79 N Check of defrost heater MUZ-GS09NAH MUZ-GS09NAHZ MUZ-GS12NAH MUZ-GS12NAHZ MUZ-GS15NAH MUZ-GS15NAHZ MUZ-GS18NAH MUZ-GS18NAHZ MUZ-GS24NAH MUZ-GS24NAHZ MUZ-GS30NAH MUZ-GS30NAH2 MUZ-GS36NAH MUZ-GS36NAH2 Check the following points before checking electric continuity. 1. Does the resistance of ambient temperature thermistor have the characteristics? Refer to 10-6.1. 2.
- Page 80 P Electromagnetic noise enters into TV sets or radios Is the unit grounded? Ground the unit. Is the distance between the antennas Extend the distance between the antennas and and the indoor unit within 9.91 ft. (3m), the indoor unit, and/or the antennas and the out- or is the distance between the antennas door unit.
- Page 81 Q Check of compressor protector MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 Disconnect the connector of compressor protector in the inverter P.C. board, and check the conduc- tion of compressor protector.
- Page 82 10-6. TEST POINT DIAGRAM AND VOLTAGE 1. Inverter P.C. board MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA Back side of unit DB61 Smoothing Smoothing Fuse (F801) R.V.coil (CN721) Fuse (F701) 208/230 V AC 260 - 370 V DC...
- Page 83 MUZ-GS18NA MUZ-GS18NAH MUY-GS18NA Smoothing Smoothing Smoothing R.V.coil Defrost Back side of unit capacitor capacitor capacitor (CN721) heater (C61) (C62) (C63) 230 V AC (CN722) DB61 230 V AC 260 - 370 V DC Fuse (F801) Fuse (F701) T3.15AL250V T3.15AL250V Fuse (F62) 15 A 250V Output to drive compressor...
- Page 84 MUZ-GS18NAHZ MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA Smoothing Smoothing Smoothing Fuse (F880) Output to drive Heater (CN601) Capacitor Capacitor Capacitor T3.15AL250V outdoor fan motor 208/230 V AC Back side of unit (CB3) (CB1) (CB2) (CN932) 208/230 V AC R.V.
- Page 85 MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 Smoothing Smoothing Smoothing Output to drive Capacitor Capacitor Capacitor Fuse (F880) outdoor fan motor Heater (CN601) Back side of unit (CB1) (CB2) (CB3) T3.15AL250V (CN932) 230 V AC Fuse (F601) T3.15AL250V 208/230 V AC Fuse (F62) 15 A 250 V R.V.
- Page 86 2. Fuse P.C. board MUZ-GS18NAHZ MUZ-GS24NA MUZ-GS24NAHZ MUY-GS24NA MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 FUSE (F66) FUSE (F65) T6.3AL250V T6.3AL250V OBH875B...
- Page 87 Hold the sleeve, and Pull the terminal while pull out the terminal slowly. pushing the locking lever. Locking lever Connector 11-1. MUZ-GS09NA MUZ-GS09NAH MUZ-GS09NAHZ MUY-GS09NA MUZ-GS12NA MUZ-GS12NAH MUZ-GS12NAHZ MUY-GS12NA MUZ-GS15NA MUZ-GS15NAH MUZ-GS15NAHZ MUY-GS15NA : Indicates the visible parts in the photos/figures.
- Page 88 OPERATING PROCEDURE PHOTOS/FIGURES Screws of the Screw of the Photo 4 Photo 5 conduit cover conduit plate 2. Removing the inverter assembly, inverter P.C. board Photo 6 (1) Remove the top panel, cabinet and service panel. (Refer to section 1.) Screw of the heat sink (2) Disconnect the lead wire to the reactor and the following support and the separator...
- Page 89 OPERATING PROCEDURE PHOTOS/FIGURES 4. Removing the discharge temperature thermistor, Photo 8 defrost thermistor, outdoor heat exchanger tempera- ture thermistor and ambient temperature thermistor Screw of the (1) Remove the top panel, cabinet and service panel. (Refer to R.V. coil (MUZ) section 1.) (2) Disconnect the lead wire to the reactor and the following connectors:...
- Page 90 OPERATING PROCEDURE PHOTOS/FIGURES 5. Removing outdoor fan motor Photo 10 (1) Remove the top panel, cabinet and service panel. (Refer to Screws of the outdoor fan motor section 1.) (2) Disconnect the following connectors: <Inverter P.C. board> CN931, CN932 (Fan motor) (3) Remove the propeller fan nut.
- Page 91 11-2. MUZ-GS18NA MUZ-GS18NAH MUZ-GS18NAHZ MUY-GS18NA MUZ-GS24NA MUZ-GS24NAH MUZ-GS24NAHZ MUY-GS24NA NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the cabinet Photo 1 Screws of the top panel (1) Remove the screws of the service panel. (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover.
- Page 92 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the inverter assembly and inverter P.C. Photo 5 board (MUZ-GS18NA MUZ-GS18NAH MUY-GS18NA) (1) Remove the top panel, cabinet and service panel. (Refer to Screw of the heat sink section 1.) support and the separator (2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P.C.
- Page 93 OPERATING PROCEDURE PHOTOS/FIGURES * Connection procedure when attaching the inverter P.C. Photo 7 board (Photo 8) 1. Attach the heat sink support to the P.C. board support. 2. Connect the lead wires of the expansion valve coil to the connector on the inverter P.C. board. Pull the lead wires of the expansion valve coil toward you and put them on the left hook on the P.C.
- Page 94 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the inverter assembly, inverter P.C. board Photo 9 and fuse P.C. board (Other models) Screw of the heat Screw of the P.C. board 3-1. Removing the inverter assembly and inverter P.C. board sink support and the support and the motor (1) Remove the top panel, cabinet and service panel.
- Page 95 OPERATING PROCEDURE PHOTOS/FIGURES * Connection procedure when attaching the inverter P.C. Photo 11 board (Photo 12,13) 1. Attach the heat sink support to the P.C. board support. 2. Hook the lead wires of the compressor, the reactor and the P.C. board to each hooks on the heat sink support as shown Photo 12.
- Page 96 OPERATING PROCEDURE PHOTOS/FIGURES 3-2. Removing the fuse P.C. board Photo 14 (1) Remove the top panel, cabinet and service panel. (Refer to Support section 1.) CN65 Fuse P.C. board (2) Disconnect the lead wire to the reactor and the inverter P.C. board connectors.
- Page 97 OPERATING PROCEDURE PHOTOS/FIGURES 4. Removing the discharge temperature thermistor, Photo 16 defrost thermistor, outdoor heat exchanger tempera- MUZ-GS•NAHZ ture thermistor and ambient temperature thermistor Outdoor heat exchanger (1) Remove the cabinet and panels. (Refer to section 1.) temperature thermistor (2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P.C.
- Page 98 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the compressor and 4-way valve Photo 18 (1) Remove the cabinet and panels. (Refer to section 1.) Brazed part of (2) Remove the inverter assembly. (Refer to section 2 (MUZ- the discharge pipe GS18NA, MUZ-GS18NAH, MUY-GS18NA), section 3-1 Discharge (Other models).) temperature...
- Page 99 11-3. MUZ-GS30NA MUZ-GS30NAH MUY-GS30NA MUZ-GS36NA MUZ-GS36NAH MUY-GS36NA NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the cabinet Photo 1 Screws of the top panel (1) Remove the screws of the service panel. (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover.
- Page 100 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the inverter assembly and inverter P.C. Photo 5 board (1) Remove the top panel, cabinet and service panel. (Refer to Screw of the P.C. board section 1.) Screw of the heat sink support and the motor (2) Disconnect the lead wire to the reactor and the following support and the separator support...
- Page 101 OPERATING PROCEDURE PHOTOS/FIGURES * Connection procedure when attaching the inverter P.C. Photo 7 board (Photo 8, 9) 1. Attach the heat sink support to the P.C. board support. 2. Hook the lead wires of the compressor, the reactor and the P.C.
- Page 102 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the discharge temperature thermistor, Photo 10 defrost thermistor, outdoor heat exchanger tempera- Outdoor heat exchanger temperature thermistor ture thermistor and ambient temperature thermistor (1) Remove the cabinet and panels. (Refer to section 1.) (2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P.C.
- Page 103 OPERATING PROCEDURE PHOTOS/FIGURES 5. Removing the compressor and 4-way valve Photo 12 (1) Remove the cabinet and panels. (Refer to section 1.) Brazed part of Brazed part of (2) Remove the inverter assembly. (Refer to section 2.) the discharge pipe the suction pipe (3) Remove the screws fixing the reactor.
- Page 104 11-4. MUZ-GS30NA2 MUZ-GS30NAH2 MUY-GS30NA2 MUZ-GS36NA2 MUZ-GS36NAH2 MUY-GS36NA2 NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the cabinet Photo 1 Screws of the top panel (1) Remove the screws of the service panel. (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover.
- Page 105 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the inverter assembly, inverter P.C. board Photo 5 and fuse P.C. board (Other models) 2-1. Removing the inverter assembly and inverter P.C. board Screw of the heat Screw of the P.C. board sink support and the (1) Remove the top panel, cabinet and service panel.
- Page 106 OPERATING PROCEDURE PHOTOS/FIGURES * Connection procedure when attaching the inverter P.C. Photo 7 board (Photo 8, 9) 1. Attach the heat sink support to the P.C. board support. 2. Hook the lead wires of the compressor, the reactor and the P.C.
- Page 107 OPERATING PROCEDURE PHOTOS/FIGURES 2-2. Removing the fuse P.C. board Photo 10 (1) Remove the top panel, cabinet and service panel. (Refer to Support section 1.) CN65 Fuse P.C. board (2) Disconnect the lead wire to the reactor and the inverter P.C. board connectors.
- Page 108 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the discharge temperature thermistor, Photo 12 defrost thermistor, outdoor heat exchanger tempera- Outdoor heat exchanger ture thermistor and ambient temperature thermistor temperature thermistor (1) Remove the cabinet and panels. (Refer to section 1.) (2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P.C.
- Page 109 OPERATING PROCEDURE PHOTOS/FIGURES 5. Removing the compressor and 4-way valve Photo 14 (1) Remove the cabinet and panels. (Refer to section 1.) Brazed part of (2) Remove the inverter assembly. (Refer to section 2.) the discharge pipe (3) Remove the screws fixing the reactor. Discharge (4) Remove the reactor.
- Page 110 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2021 MITSUBISHI ELECTRIC CORPORATION Issued: Oct. 2022. No. OBH875 REVISED EDITION-B Issued: Jun. 2021. No. OBH875 REVISED EDITION-A Published: Jan. 2021. No. OBH875 Made in Japan Specifications are subject to change without notice.