Service manual

ManualsBrandsMitsubishi ManualsDomestic AppliancesMSH-18RV

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················2

3. SPECIFICATION·················································6

4. NOISE CRITERIA CURVES·······························8

5. OUTLINES AND DIMENSIONS ······················ 10

6. WIRING DIAGRAM ··········································13

7. REFRIGERANT SYSTEM DIAGRAM··············17

8. PERFORMANCE CURVES······························20

9. MICROPROCESSOR CONTROL ····················36

10. SERVICE FUNCTIONS·····································50

11. TROUBLESHOOTING······································52

12. DISASSEMBLY INSTRUCTIONS·····················71

13. PARTS LIST······················································79

14. OPTIONAL PARTS···········································88

Wireless type

Models

MSH-18RV -

(

)

· MUH-18RV -

MSH-24RV -

(

)

· MUH-24RV -

MSH-30RV -

(

)

· MUH-30RV -

E1E1

No. OB272

REVISED EDITION-A

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

MSH-18RV -

MSH-24RV -

Revision:

● MUH-18RV- has been added.

MUH-18RV- ➔ MUH-18RV-

•Path of outdoor heat exchanger has changed.

E2E1

•Refer to the Service Manual OB185 REVISED EDITION C when MSH-18RV- is connected

with MXZ-32NV- or MXZ-32NV- as multi system units.

•Refer to the Service Manual OB227 REVISED EDITION-B when MSH-18RV- is connected

with MXZ-32RV- as multi system units.

•Refer to the Service Manual OB254 when MSH-18RV- is connected with MXZ-32SV- as

multi system units.

E1E1

E2E1

OB272-1.qxp 02.1.26 1:22 PM Page 1

Summary of content (88 pages)

PAGE 1
OB272-1.qxp 02.1.26 1:22 PM Page 1 Revision: ● MUH-18RV- E2 has been added. MUH-18RV- E1 ➔ MUH-18RV- E2 •Path of outdoor heat exchanger has changed. SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS No. OB272 REVISED EDITION-A SERVICE MANUAL Wireless type Models MSH-18RV MSH-24RV MSH-30RV - E1 (WH) E1 (WH) E1 (WH) · · · · MUH-18RV MUH-18RV MUH-24RV MUH-30RV - E1 E2 E1 E1 CONTENTS MSH-18RV MSH-24RV - E1 E1 1. TECHNICAL CHANGES ····································2 2.
PAGE 2
OB272-1.qxp 1 02.1.26 1:22 PM Page 2 TECHNICAL CHANGES MSH-18NV - E4 ➔MSH-18RV - E1 MSH-24NV - E2 ➔MSH-24RV - E1 1. Remote controller has changed. • SLEEP MODE function has removed. • ECONO COOL operation has added. • SWING button is removed, but SWING MODE function is available by VANE CONTROL button. MSH-30RV - E1 New model MUH-18NV - E4 ➔MUH-18RV - E1 1. Outdoor model name has changed. MUH-18RV - E1 ➔MUH-18RV - E2 1. Path of outdoor heat exchanger has changed. MUH-24NV - E2 ➔MUH-24RV - E1 1.
PAGE 3
OB272-1.qxp 02.1.26 1:49 PM Page 3 OUTDOOR UNIT MUH-18RV MUH-18RV - MUH-24RV MUH-30RV - E1 E2 Air inlet (back and side) Piping Drainage hose Air outlet Drain outlet ACCESSORIES Indoor unit 1 2 3 4 5 6 7 Installation plate Installation plate fixing screw 4 o 25 mm Remote controller mouting hardware Fixing screw for 3 o 3.5 o 1.
PAGE 4
OB272-1.qxp 02.1.26 1:22 PM Page 4 REMOTE CONTROLLER MSH-18RV - E1 MSH-24RV - E1 Signal transmitting section Operation display section PM OPERATE /STOP (ON /OFF)button AM TOO ON/OFF WARM TOO COOL TEMPERATURE buttons Open the front lid. CLOCK PM AM TOO ON/OFF WARM VANE CONTROL button TOO COOL FAN STOP VANE START I FEEL COOL FAN SPEED CONTROL button OFF-TIMER button HEAT DRY ON-TIMER button MODE HR. ECONO COOL MIN. OPERATION SELECT button ECONO COOL button HR. button MIN.
PAGE 5
OB272-1.qxp 02.1.26 1:22 PM Page 5 REMOTE CONTROLLER MSH-30RV - E1 Signal transmitting section Operation display section PM OPERATE /STOP (ON /OFF)button AM TOO ON/OFF WARM TOO COOL TEMPERATURE buttons Open the front lid. CLOCK PM AM TOO ON/OFF WARM VANE button (Horizontal vane button) TOO COOL FAN STOP VANE START I FEEL COOL FAN SPEED CONTROL button OFF-TIMER button HEAT DRY ON-TIMER button MODE WIDE VANE HR. OPERATION SELECT button ECONO COOL LONG ECONO COOL button MIN. HR.
PAGE 6
OB272-1.qxp 3 02.1.26 1:22 PM Page 6 SPECIFICATION W1. Refer to the Service Manual OB185 REVISED EDITION C when MSH-18RV- E1 is connected with MXZ-32NV- E1 or MXZ-32NV- E2 as multi system units. Refer to the Service Manual OB227 REVISED EDITION-B when MSH-18RV- E1 is connected with MXZ-32RV- E1 as multi system units. Refer to the Service Manual OB254 when MSH-18RV- E1 is connected with MXZ-32SV- E1 as multi system units.
PAGE 7
02.1.26 1:22 PM Page 7 Indoor model Function MSH-30RV - Heating Single phase 220-240V, 50Hz Power supply 25 Special remarks 16.3-15.8 3,520-3,560 15.3-15.5 3,300-3,460 — 98-94 98-93 82-84 0.33-0.35 2.73-2.70 2.52-2.40 RC4V40-AA WHT-BLK 138.2 BLK-RED 159.0 1,100O325O227 16 5 47/43 w /39 w 1,280/1,130w /970 w 1,280/1,150 w/1,020 w 3 10 10 10 MUH-30RV - E1 2,880-3,000/1,380-1,560w 15.41-14.87 2,880-3,000/1,380-1,560w 14.41-14.57 0.56-0.58 NH-56VNHT 2,700 C-R 0.66 C-S 1.
PAGE 8
OB272-1.qxp 02.1.
PAGE 9
OB272-1.qxp 02.1.26 1:22 PM Page 9 MSH-30RV- E1 NOTCH SPL(dB(A)) High 47 LINE OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.
PAGE 10
OB272-1.qxp 02.1.26 1:22 PM 5 Page 10 OUTLINES AND DIMENSIONS Unit: mm MSH-18RV - E1 MSH-24RV - E1 INDOOR UNIT Indoor unit 4holes 11✕20 648 217 450 3 450 297 254 60 40 20 150 995 438 352 Wall hole [75 Installation plate 1015 190 5 320 Installation plate { Air in 50 775 190 58 19 Liquid line [8-0.5m Gas line [12-0.43m Insulation [50 O.D [28 I.
PAGE 11
02.1.26 1:22 PM Page 11 MSH-30RV - E1 Unit: mm INDOOR UNIT Installation plate Indoor unit 7.5 173 98 414.5 414.5 173 Wall hole [ 75 225 1100 Installation plate { Air in 791 56 253 Air out 19 162 58 5 Wireless remote controller 11 Liquid line [ 9.52- 0.5m Gas line [ 19-0.43m Insulation [ 50 O.D [ 32 I.D Drain hose [ 16 (Connected part O.D) Insulation [ 28 47 2.5 47 255.5 1068 315 98 325 OB272-1.
PAGE 12
OB272-1.qxp 02.1.26 1:22 PM Page 12 MUH-24RV- E1 MUH-30RV- E1 Unit: mm OUTDOOR UNIT Outdoor Unit-Necessary surrounding clearance 200 39.5 27.
PAGE 13
OB272-1.qxp 02.1.26 1:22 PM 6 Page 13 WIRING DIAGRAM MSH-18RV - E1 MODEL WIRING DIAGRAM INDOOR UNIT TO OUTDOOR L TB BRN UNIT CONNECTING BRN 12V 3 200-240V~ 2 NR11 4 BLU BLU F12 WHT BLU 2 BLU 1 CN201 3 1 BLU 52C 3 CN 112 IC141 TRANS CIRCUIT BREAKER FOR MULTI SYSTEM TO OUTDOOR UNIT CONNECTING C11 CN 101 GRN/YLW RT11 3 MV DISPLAY RECEIVER P.C. BOARD P.C. BOARD IC141 REMOTE CONTROLLER NAME SYMBOL INDOOR FAN CAPACITOR CN ELECTRONIC CONTROL P.C.
PAGE 14
Page 14 21S4 TB CN730 3 RED 1 CN661 N VLT MF CN720 X62 SR61 TAB21 1 2 NR61 IC881 2 WHT RED WHT 4 X62 TAB20 1 2 3 3 TRANS DSAR 220-240V~ BLU 52C CN721 F61 WHT GRN/YLW FROM INDOOR UNIT CONNECTING 12V BLK RT61 VLT MODEL WIRING DIAGRAM MUH-18RV - E2 OUTDOOR UNIT C65 02.1.26 1:22 PM BLK OB272-1.qxp BLK 4 RED ORN WHT BLK CN711 DEICER P.C.
PAGE 15
02.1.26 1:22 PM Page 15 MSH-24RV - E1 MODEL WIRING DIAGRAM INDOOR UNIT TO OUTDOOR UNIT CONNECTING TB RED N 220-240V~ 2 HIC1 BLU BLU F12 WHT CN201 3 1 BLU 2 BLU 1 L 4 3 CN 112 IC141 52C TRANS BRN CN 121 WHT C11 DSAR 102 DSAR GRN/YLW CIRCUIT BREAKER GRN/YLW CN 101 ELECTRONIC CONTROL P.C. BOARD 3 MV DISPLAY RECEIVER P.C. BOARD P.C.
PAGE 16
OB272-1.qxp 02.1.26 1:22 PM MSH-30RV - E1 INDOOR UNIT Page 16 MODEL WIRING DIAGRAM TO OUTDOOR UNIT CONNECTING 12V 4 3 2 1 HIC1 3 TB NR11 BLU 3 2 1 TRANS BRN TAB12 F11 15 3 CN 121 1 3 4 C11 SR141 CN 101 ELECTRONIC CONTROL P.C. BOARD CN 111 3 MV2 MV2 MV1 BLK GRY YLW BRN WHT RED MF CN211 CN 102 CN 151 GRN/YLW 220-240V ~ L RT12 CN112 CN201 RED N RT13 RT11 3 DISPLAY P.C.BOARD RECEIVER P.C.
PAGE 17
OB272-1.qxp 02.1.26 1:22 PM 7 Page 17 REFRIGERANT SYSTEM DIAGRAM Unit:mm MSH-18RV - E1 INDOOR UNIT MUH-18RV - E1 MUH-18RV - E2 OUTDOOR UNIT 4- way valve Refrigerant pipe [15.88 (with heat insulator) Muffler Indoor coil thermistor RT12 Distributor Indoor heat exchanger Strainer Stop valve (with service port) Defrost thermistor RT61 Flared connection Room temperature thermistor RT11 Outdoor heat exchanger Accumulator Compressor Capillary tube [3.0o[1.
PAGE 18
OB272-1.qxp 02.1.26 1:22 PM Page 18 Unit:mm MSH-30RV - E1 MUH-30RV - E1 4-way valve Strainer Refrigerant pipe [15.
PAGE 19
OB272-1.qxp 02.1.
PAGE 20
OB272-1.qxp 8 02.1.26 1:22 PM Page 20 PERFORMANCE CURVES MSH-18RV - E1 MUH-18RV - E1 MUH-18RV - E2 MSH-24RV - E1 MUH-24RV - E1 MSH-30RV - E1 MUH-30RV - E1 The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions, since operating conditions vary according to the areas where these units are installed.
PAGE 21
02.1.26 1:22 PM 28.0 29.8 39.2 25.9 27.5 36.2 23.7 25.2 33.2 21.6 22.9 30.2 19.4 20.6 27.2 17.2 18.3 24.1 Page 21 MSH-30RV - E1 13.8 18.1 MSH-24RV - E1 16.1 21.1 12.9 MSH-18RV - E1 15.1 NOTE:The above curves are for the heating operation without any frost. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation 1 Both indoor and outdoor unit are under the same temperature/humidity condition.
PAGE 22
02.1.26 1:22 PM Page 22 (kgf/F[Gauge])(MPa[Gauge]) 0.6 MUH-30RV - E1 MUH-30RV - E1 17 240V Outdoor unit current(A) Outdoor low pressure 6 0.5 5 220-240V 0.4 4 0.3 3 0.2 15 2 18 20 50 25 60 16 220V 15 14 13 12 11 10 15 30 32 35(:) 70 (%) Ambient temperature(˚C) Ambient humidity(%) 18 20 50 Condition indoor:Dry bulb temperature 20.0°C Wet bulb temperature 14.5°C Outdoor:Dry bulb temperature 7,15,20°C Wet bulb temperature 6,12,14.
PAGE 23
OB272-1.qxp 02.1.26 1:22 PM Page 23 PERFORMANCE DATA COOL operation MSH-18RV - E1 : MUH-18RV - E1 MUH-18RV - E2 (220V) CAPACITY : 5.1(KW) SHF : 0.66 INPUT : 2030(W) OUTDOOR DB(:) 21 25 27 INDOOR INDOOR Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q DB(:) WB(:) 5.99 2.88 0.48 1624 5.74 2.75 0.48 1705 5.51 2.64 0.48 1786 5.30 18 21 6.25 2.25 0.36 1705 5.99 2.16 0.36 1807 5.81 2.09 0.36 1847 5.61 20 21 5.99 3.12 0.52 1624 5.74 2.98 0.52 1705 5.51 2.86 0.52 1786 5.30 18 22 6.25 2.50 0.40 1705 5.99 2.
PAGE 24
OB272-1.qxp 02.1.26 1:22 PM Page 24 PERFORMANCE DATA COOL operation MSH-18RV - E1 : MUH-18RV - E1 MUH-18RV - E2 (220V) CAPACITY : 5.1(KW) SHF : 0.66 INDOOR INDOOR DB(:) WB(:) 18 21 20 21 18 22 20 22 22 22 18 23 20 23 22 23 18 24 20 24 22 24 24 24 18 25 20 25 22 25 24 25 18 26 20 26 22 26 24 26 26 26 18 27 20 27 22 27 24 27 26 27 18 28 20 28 22 28 24 28 26 28 18 29 20 29 22 29 24 29 26 29 18 30 20 30 22 30 24 30 26 30 18 31 20 31 22 31 24 31 26 31 18 32 20 32 22 32 24 32 26 32 NOTE Q 5.00 5.25 5.00 5.
PAGE 25
OB272-1.qxp 02.1.26 1:22 PM Page 25 PERFORMANCE DATA COOL operation MSH-18RV - E1 : MUH-18RV - E1 MUH-18RV - E2 (240V) CAPACITY : 5.1(KW) SHF : 0.66 INPUT : 2120(W) OUTDOOR DB(:) 21 25 27 INDOOR INDOOR Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q DB(:) WB(:) 5.99 2.88 0.48 1696 5.74 2.75 0.48 1781 5.51 2.64 0.48 1866 5.30 18 21 6.25 2.25 0.36 1781 5.99 2.16 0.36 1887 5.81 2.09 0.36 1929 5.61 20 21 5.99 3.12 0.52 1696 5.74 2.98 0.52 1781 5.51 2.86 0.52 1866 5.30 18 22 6.25 2.50 0.40 1781 5.99 2.
PAGE 26
OB272-1.qxp 02.1.26 1:22 PM Page 26 PERFORMANCE DATA COOL operation MSH-18RV - E1 : MUH-18RV - E1 MUH-18RV - E2 (240V) CAPACITY : 5.1(KW) SHF : 0.66 INPUT : 2120(W) OUTDOOR DB(:) 35 40 43 INDOOR INDOOR Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q DB(:) WB(:) 5.00 2.40 0.48 2078 4.59 2.20 0.48 2205 4.41 2.12 0.48 2247 4.23 18 21 5.25 1.89 0.36 2162 4.90 1.76 0.36 2268 4.72 1.70 0.36 2332 4.54 20 21 5.00 2.60 0.52 2078 4.59 2.39 0.52 2205 4.41 2.29 0.52 2247 4.23 18 22 5.25 2.10 0.40 2162 4.90 1.
PAGE 27
OB272-1.qxp 02.1.26 1:22 PM Page 27 PERFORMANCE DATA COOL operation MSH-24RV - E1 : MUH-24RV - E1 (220V) CAPACITY : 6.0(KW) SHF : 0.65 INPUT : 2720(W) OUTDOOR DB(:) 21 25 27 INDOOR INDOOR Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q DB(:) WB(:) 7.05 3.31 0.47 2176 6.75 3.17 0.47 2285 6.48 3.05 0.47 2394 6.24 18 21 7.35 2.57 0.35 2285 7.05 2.47 0.35 2421 6.84 2.39 0.35 2475 6.60 20 21 7.05 3.60 0.51 2176 6.75 3.44 0.51 2285 6.48 3.30 0.51 2394 6.24 18 22 7.35 2.87 0.39 2285 7.05 2.75 0.39 2421 6.
PAGE 28
OB272-1.qxp 02.1.26 1:22 PM Page 28 PERFORMANCE DATA COOL operation MSH-24RV - E1 : MUH-24RV - E1 (220V) CAPACITY : 6.0(KW) SHF : 0.65 INPUT : 2720(W) OUTDOOR DB(:) 35 40 43 INDOOR INDOOR Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q DB(:) WB(:) 5.88 2.76 0.47 2666 5.40 2.54 0.47 2829 5.19 2.44 0.47 2883 4.98 18 21 6.18 2.16 0.35 2774 5.76 2.02 0.35 2910 5.55 1.94 0.35 2992 5.34 20 21 5.88 3.00 0.51 2666 5.40 2.75 0.51 2829 5.19 2.65 0.51 2883 4.98 18 22 6.18 2.41 0.39 2774 5.76 2.25 0.39 2910 5.
PAGE 29
OB272-1.qxp 02.1.26 1:22 PM Page 29 PERFORMANCE DATA COOL operation MSH-24RV - E1 : MUH-24RV - E1 (240V) CAPACITY : 6.0(KW) SHF : 0.65 INPUT : 2750(W) OUTDOOR DB(:) 21 25 27 INDOOR INDOOR Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q DB(:) WB(:) 7.05 3.31 0.47 2200 6.75 3.17 0.47 2310 6.48 3.05 0.47 2420 6.24 18 21 7.35 2.57 0.35 2310 7.05 2.47 0.35 2448 6.84 2.39 0.35 2503 6.60 20 21 7.05 3.60 0.51 2200 6.75 3.44 0.51 2310 6.48 3.30 0.51 2420 6.24 18 22 7.35 2.87 0.39 2310 7.05 2.75 0.39 2448 6.
PAGE 30
OB272-1.qxp 02.1.26 1:22 PM Page 30 PERFORMANCE DATA COOL operation MSH-24RV - E1 : MUH-24RV - E1 (240V) CAPACITY : 6.0(KW) SHF : 0.65 INDOOR INDOOR DB(:) WB(:) 18 21 20 21 18 22 20 22 22 22 18 23 20 23 22 23 18 24 20 24 22 24 24 24 18 25 20 25 22 25 24 25 18 26 20 26 22 26 24 26 26 26 18 27 20 27 22 27 24 27 26 27 18 28 20 28 22 28 24 28 26 28 18 29 20 29 22 29 24 29 26 29 18 30 20 30 22 30 24 30 26 30 18 31 20 31 22 31 24 31 26 31 18 32 20 32 22 32 24 32 26 32 NOTE Q 5.88 6.18 5.88 6.18 6.54 5.88 6.
PAGE 31
OB272-1.qxp 02.1.26 1:22 PM Page 31 PERFORMANCE DATA COOL operation MSH-30RV - E1 : MUH-30RV - E1 (220V) CAPACITY : 8.3(KW) SHF : 0.62 INPUT : 3300(W) OUTDOOR DB(:) INDOOR INDOOR 21 25 27 30 DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT 21 18 9.75 4.29 0.44 2640 9.34 4.11 0.44 2772 8.96 3.94 0.44 2904 8.63 3.80 0.44 3036 21 20 10.17 3.25 0.32 2772 9.75 3.12 0.32 2937 9.46 3.03 0.32 3003 9.13 2.92 0.32 3135 22 18 9.75 4.68 0.48 2640 9.34 4.48 0.48 2772 8.96 4.30 0.
PAGE 32
OB272-1.qxp 02.1.26 1:22 PM Page 32 PERFORMANCE DATA COOL operation MSH-30RV - E1 : MUH-30RV - E1 (220V) CAPACITY : 8.3(KW) SHF : 0.62 INPUT : 3300(W) INDOOR INDOOR 35 DB(:) WB(:) Q SHC SHF INPUT 21 18 8.13 3.58 0.44 3234 21 20 8.55 2.74 0.32 3366 22 18 8.13 3.90 0.48 3234 22 20 8.55 3.08 0.36 3366 22 22 9.05 2.17 0.24 3498 23 18 8.13 4.23 0.52 3234 23 20 8.55 3.42 0.40 3366 23 22 9.05 2.53 0.28 3498 24 18 8.13 4.56 0.56 3234 24 20 8.55 3.76 0.44 3366 24 22 9.05 2.90 0.32 3498 24 24 9.55 1.91 0.
PAGE 33
OB272-2.qxp 02.1.26 1:23 PM Page 33 PERFORMANCE DATA COOL operation MSH-30RV - E1 : MUH-30RV - E1 (240V) CAPACITY : 8.3(KW) SHF : 0.62 INPUT : 3460(W) OUTDOOR INDOOR INDOOR 21 DB(:) WB(:) Q SHC SHF INPUT 21 18 9.75 4.29 0.44 2768 21 20 10.17 3.25 0.32 2906 22 18 9.75 4.68 0.48 2768 22 20 10.17 3.66 0.36 2906 22 22 10.58 2.54 0.24 3010 23 18 9.75 5.07 0.52 2768 23 20 10.17 4.07 0.40 2906 23 22 10.58 2.96 0.28 3010 24 18 9.75 5.46 0.56 2768 24 20 10.17 4.47 0.44 2906 24 22 10.58 3.39 0.32 3010 24 24 11.
PAGE 34
OB272-2.qxp 02.1.26 1:23 PM Page 34 PERFORMANCE DATA COOL operation MSH-30RV - E1 : MUH-30RV - E1 (240V) CAPACITY : 8.3(KW) SHF : 0.62 INPUT : 3460(W) INDOOR INDOOR 35 DB(:) WB(:) Q SHC SHF INPUT 21 18 8.13 3.58 0.44 3391 21 20 8.55 2.74 0.32 3529 22 18 8.13 3.90 0.48 3391 22 20 8.55 3.08 0.36 3529 22 22 9.05 2.17 0.24 3668 23 18 8.13 4.23 0.52 3391 23 20 8.55 3.42 0.40 3529 23 22 9.05 2.53 0.28 3668 24 18 8.13 4.56 0.56 3391 24 20 8.55 3.76 0.44 3529 24 22 9.05 2.90 0.32 3668 24 24 9.55 1.91 0.
PAGE 35
OB272-2.qxp 02.1.26 1:23 PM Page 35 PERFORMANCE DATA HEAT operation MSH-18RV - E1 : MUH-18RV - E1 MUH-18RV - E2 (220V) CAPACITY : 5.4(KW) INPUT : 1980(W) INDOOR DB(:) 15 21 26 NOTE OUTDOOR WB(:) -10 -5 0 5 10 Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 3.40 1287 4.10 1544 4.81 1742 5.51 1881 6.21 2000 3.24 1386 3.89 1643 4.59 1822 5.24 1960 5.96 2059 2.92 1485 3.62 1742 4.27 1921 4.97 2059 5.67 2158 Q :Total capacity (kW) INPUT:Total power input (W) DB : Dry-bulb 15 20 Q INPUT Q INPUT 6.86 2059 7.
PAGE 36
OB272-2.qxp 9 02.1.
PAGE 37
OB272-2.qxp 02.1.26 1:23 PM Page 37 • Once the mode is fixed, the mode does not change by room temperature afterwards. • Under the ON-TIMER ( ) operation, mode is determined according to the room temperature at the set time the operation starts. When the system is stopped on the remote controller, and restarted within 2 hours in “I FEEL CONTROL” ( ) mode, the system operates in previous mode automatically regardless of the room temperature.
PAGE 38
OB272-2.qxp 02.1.26 1:23 PM Page 38 9-1-1. COOL mode of “I FEEL CONTROL” 1. Indoor fan speed control Indoor fan operates at the set speed by FAN SPEED CONTROL button. In AUTO the fan speed is as follows. Initial temperature difference Fan Speed Room temperature minus set temperature : 3 degrees or more·····························High Room temperature minus set temperature : Between 1 and 1.7 degrees················Med.
PAGE 39
OB272-2.qxp 02.1.26 1:23 PM Page 39 1. Indoor fan speed control Indoor fan operates at the set speed by FAN SPEED CONTROL button. However, in AUTO fan operation, fan speed becomes Low. 2. The operation of the compressor and indoor/ outdoor fan Compressor operates by room temperature control and time control. Set temperature is controlled to fall 2°C from initial room temperature. Indoor fan and outdoor fan operate in the same cycle as the compressor.
PAGE 40
OB272-2.qxp 02.1.26 1:23 PM Page 40 less than 2 minutes ························Low 2 minutes to 4 minutes···················Med. 4 minutes or more ··························High The upper limit of the fan speed is the set speed. If the thermostat turns off, this operation changes to flow soft control. (4) Flow soft control After the thermostat turns off, the indoor fan operates at Very Low. NOTE : When the thermostat turns on, the fan operates at the set speed.
PAGE 41
OB272-2.qxp 02.1.26 1:23 PM Page 41 5. Defrosting Defrosting of outdoor heat exchanger is controlled by deicer P.C. board, with detection by the defrost thermistor RT61. (1) Starting conditions of defrost When all conditions of a) ~ c) are satisfied, the defrosting operation starts. a) Under the heat operation, the compressor cumulative operation time exceeds 40 minutes without the defrosting operation working. b) The defrost thermistor RT61 reads - 3°C or less.
PAGE 42
OB272-2.qxp 02.1.26 1:23 PM Page 42 6. R.V. coil control Heating · · · · · ON Cooling · · · · · OFF Dry · · · · · · · · OFF NOTE1 The 4-way valve reverses for 5 seconds right before start-up of the compressor. NOTE2 •Refer to the Service Manual OB185 REVISED EDITION C when MSH-18RV- E1 is connected with MXZ-32NV- E1 or MXZ-32NV- E2 as multi system units. •Refer to the Service Manual OB227 REVISED EDITION-B when MSH-18RV- E1 is connected with MXZ-32RV- E1 as multi system units.
PAGE 43
OB272-2.qxp 02.1.26 1:23 PM Page 43 9-5. INDOOR FAN MOTOR CONTROL (1) Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feed back the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (High, Med.
PAGE 44
OB272-2.qxp 02.1.26 1:23 PM Page 44 (5) STOP (operation OFF) and ON-TIMER standby. When the following cases occur, the horizontal vane returns to the closed position. (a) When the OPERATE/STOP (ON/OFF) button is pressed (POWER OFF). (b) When the operation is stopped by the emergency operation. (c) When the ON-TIMER is on standby.
PAGE 45
OB272-2.qxp 02.1.26 1:23 PM Page 45 (10) LONG MODE ( ) By pressing the LONG button fan speed becomes faster than setting fan speed on the remote controller, and the horizontal vane moves to the position for LONG mode. The remote controller displays “ ”. LONG mode is cancelled when the LONG button is pressed once again or the VANE button is pressed or ECONO COOL button is pressed in COOL mode. • In the following example, the vertical vane is set to (front.).
PAGE 46
OB272-2.qxp 02.1.26 1:23 PM Page 46 9-7. TIMER OPERATION 1. How to set the timer (1) Press OPERATE/STOP (ON/OFF) button to start the air conditioner. (2) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of TIME MONITOR, so set the current time correctly with CLOCK SET button. (3) Press TIMER CONTROL button to select the operation. “ON-TIMER” button...
PAGE 47
OB272-2.qxp 02.1.26 1:23 PM Page 47 9-8. EMERGENCY-TEST OPERATION In case of test run operation or emergency operation, use the EMERGENCY OPERATION switch on the front of the indoor unit. Emergency operation is available when the remote controller is missing, has failed or the batteries of remote controller run down. The unit will start and the OPERATION INDICATOR lamp will light. The first 30 minutes of operation is the test run operation. This operation is for servicing.
PAGE 48
OB272-2.qxp 02.1.26 1:23 PM Page 48 9-9. LEV control General operation Basic specification LEV (Expansion valve) is controlled by “Thermostat ON” commands given from the unit. Controlled range Minimum : 54 pulse, Maximum : 500 pulse Drive speed 30 ~ 90 pulse / second Opening set The setting is always in opening direction. (When closing LEV, open the LEV to adjust to set opening after closing the LEV at once.
PAGE 49
02.1.26 1:23 PM Page 49 2 When the temperature difference RT between indoor coil thermistor (main) RT12 and indoor coil thermistor (sub) RT13 in the indoor unit is 2: or more for a fixed time at cool or dry operation, the target discharge temperature is changed. After the temperature is changed, when temperature difference RT is 3: or more, the target temperature is changed again. The LEV opening is controlled based on the changed target discharge temperature and the temperature difference RT.
PAGE 50
OB272-2.qxp 10 02.1.26 1:23 PM Page 50 SERVICE FUNCTIONS MSH-18RV - E1 MUH-18RV - E1 MUH-18RV - E2 MSH-24RV - E1 MUH-24RV - E1 MSH-30RV - E1 MUH-30RV - E1 10-1. COMPULSORY DEFROSTING MODE FOR SERVICE By short circuit of the connector JP607 and R853(MSH-18RV)/ JPG1 and R871(MSH-24/30RV) on the outdoor deicer P.C. board, defrosting mode can be accomplished regardless of the defrost interval restriction. (Refer to page 69 or 70.) Defrost thermistor RT61 must read below -3°C. 10-2.
PAGE 51
02.1.26 1:23 PM Page 51 Table 1 1 unit operation 2 units operation 3 units operation 4 units operation No. 1 unit No modification Same as at left Same as at left Same as at left No. 2 unit – Solder J1 Same as at left Same as at left No. 3 unit – – Solder J2 Same as at left No. 4 unit – – – Solder both J1 and J2 NOTE : At power supply failure or installation, indoor unit deletes the memory about remote controller.
PAGE 52
OB272-2.qxp 11 02.1.26 1:23 PM Page 52 TROUBLESHOOTING MSH-18RV - E1 MUH-18RV - E1 MUH-18RV - E2 MSH-24RV - E1 MUH-24RV - E1 MSH-30RV - E1 MUH-30RV - E1 11-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: (1) Check the power supply voltage. (2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care the following during servicing.
PAGE 53
OB272-2.qxp 02.1.26 1:23 PM Page 53 11-2. Instruction of troubleshooting MSH-18RV Start Indoor unit operates. Outdoor unit doesn't operate. Outdoor unit operates in only Test Run operation. Check room temperature thermistor. Refer to "Test point diagram and voltage" on page 67. Flash on and off at 0.5-second intervals Cause: Indoor/ Outdoor unit • Mis-wiring Outdoor unit doesn't operate even in Test Run operation. Refer to D "Check of outdoor unit" on page 60.
PAGE 54
OB272-2.qxp 02.1.26 1:23 PM Page 54 MSH-24/30RV Start Indoor unit operates. Outdoor unit doesn't operate. Outdoor unit operates in only Test Run operation. Check room temperature thermistor. Refer to "Test point diagram and voltage" on page 67 or 68. Flash on and off at 0.5second intervals Cause: Indoor/ Outdoor unit • Mis-wiring Outdoor unit doesn't operate even in Test Run operation. Refer to D "Check of outdoor unit" on page 61 or 62.
PAGE 55
OB272-2.qxp 02.1.26 1:23 PM Page 55 1. Troubleshooting check table MSH-18RV • The following indication does not depend on the shape of lamp. flashing · Flashing of the OPERATION INDICATOR lamp (on the left-hand side) Operation Indicator indicates possible abnormalities. · The OPERATION INDICATOR lamp (on the left-hand side) is lighting during normal operation. Before taking measures, make sure that the symptom reappears, for accurate troubleshooting. Self check table NO.
PAGE 56
OB272-2.qxp 02.1.26 1:23 PM Page 56 MSH-24/30RV • The following indication does not depend on the shape of lamp. flashing · Flashing of the OPERATION INDICATOR lamp (on the left-hand side) indicates possible Operation Indicator abnormalities. · The OPERATION INDICATOR lamp (on the left-hand side) is lighting during normal operation. Before taking measures, make sure that the symptom reappears, for accurate troubleshooting. Self check table No. Abnormal point Operation indicator lamp Symptom 0.
PAGE 57
OB272-2.qxp 02.1.26 1:23 PM Page 57 2. Trouble criterion of main parts MSH-18RV - E1 MUH-18RV - E1 MUH-18RV - E2 MSH-24RV - E1 MUH-24RV - E1 Check method and criterion Part name Room temperature thermistor (RT11) Indoor coil thermistor (RT12) Figure Measure the resistance with a tester. (Part temperature 10°C ~ 30°C) Normal Abnormal 8kΩ ~ 20kΩ Open or short-circuit Measure the resistance with a tester.
PAGE 58
OB272-2.qxp 02.1.26 1:23 PM Page 58 MSH-30RV - E1 MUH-30RV - E1 Part name Room temperature thermistor(RT11) Check method and criterion Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C) Normal Abnormal Indoor coil thermistor Open or short-circuit (RT12(main), RT13(sub)) 8 k" ~ 20 k" Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up.
PAGE 59
OB272-2.qxp 02.1.26 1:23 PM Page 59 When OPERATION INDICATOR lamp flashes 3-time. Indoor fan motor doesn’t operate. A Check of indoor fan motor Turn OFF the power supply. Check connector CN211 visually. No Yes Are lead wires connected? Is soldered point normal? No Re-solder it. Yes Re-connect the lead wires. Disconnect lead wires from connector CN211 on the indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.4 and then No.1 and No.2(MSH-18/24RV). No.3 and No.
PAGE 60
OB272-2.qxp 02.1.26 1:23 PM Page 60 The unit doesn’t operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. C Check of indoor electronic control P.C. board Check the both “parts side” and “pattern side” of indoor electronic control P.C. board visually. MSH-30RV Varistor (NR11) MSH-18/24RV 1 Turn OFF the power supply.
PAGE 61
OB272-2.qxp 02.1.26 1:23 PM Page 61 MSH-24RV Start Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch. 3-minute time delay works. Test run operation operates for 30 minutes. Compressor doesn't operate. Is there 5V DC between No J101 + - J401 on the deicer P.C. board? w1 Yes Is there 220-240V AC between CN730 1-3 on the deicer P.C. board? w1 Yes No Make the connection of wiring correct. Replace the deicer P.C. board.
PAGE 62
OB272-2.qxp 02.1.26 1:23 PM Page 62 MSH-30RV Turn ON the power supply. Is there 220-240V AC to between L-N on the outdoor terminal block? No Check the outdoor power supply and connection of wiring. Yes Compressor does not operate. Is there 5V DC between No J101 + - J401 on the deicer P.C. board? w1 Yes Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch.
PAGE 63
OB272-2.qxp 02.1.26 1:23 PM Page 63 Compressor and / or outdoor fan motor doesn’t stop. E Check of outdoor unit 1 Turn OFF the power supply. 2 After 30 seconds, turn ON the power supply again. 3 Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch. 4 Operate the unit for 1 minute or more and stop it by pressing the EMERGENCY OPERATION switch again.
PAGE 64
OB272-2.qxp 02.1.26 1:23 PM Page 64 When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second or flashes once. Outdoor unit doesn’t operate. G How to check mis-wiring and serial signal error Start 1. Turn OFF the power supply. 2. Turn ON the power supply. 3. Press the EMERGENCY OPERATION switch. 3 min.
PAGE 65
OB272-3.qxp 02.1.26 1:24 PM Page 65 When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second. Outdoor unit doesn’t operate. H How to check mis-wiring w Short circuit of JPG and JPS on the indoor electronic control P.C. board enables self -check to be displayed in 3 seconds. Start • Turn ON the power supply. • Press once EMERGENCY OPERATION switch. After 3 minutes, mis-wiring is indicated (0.5-second ON, 0.5-second OFF) on OPERATION INDICATOR lamp on indoor unit.
PAGE 66
OB272-3.qxp 02.1.26 1:24 PM Page 66 When OPERATION INDICATOR lamp flashes 10-time. Heating/ Cooling doesn't operate. I Check of LEV (Expansion valve) 1 During pressing OPERATION SELECT button on remote controller, press RESET button. 2 First, release RESET button. 1 During pressing OPERATION SELECT (Confirm all displays of remote controller.) button on remote controller, press 3 Then release OPERATION SELECT button. RESET button. 2 First, release RESET button.
PAGE 67
OB272-3.qxp 02.1.26 1:24 PM Page 67 TEST POINT DIAGRAM AND VOLTAGE MSH-18RV - E1 MSH-24RV - E1 Indoor electronic control P.C. board Fan motor power supply Fuse(F11) 250V AC 3.15A } + Power supply input 220-240V AC C144 } 5V DC C144 Room temperature thermistor(RT11) Indoor coil thermistor(RT12) Timer short mode point (JPS, JPG) (Refer to page 50.) Emergency operation switch JPG + } 12V DC JP41 0~20V DC How to set “Auto restart function” Cut the Resistor JR06. (Refer to page 51.) P.C.
PAGE 68
OB272-3.qxp 02.1.26 1:24 PM Page 68 TEST POINT DIAGRAM AND VOLTAGE MSH-30RV - E1 Indoor electronic control P.C. board Fan motor power supply } Power supply input 220-240V AC + Fuse (F11) 250V AC 3.15A } 5V DC Room temperature thermistor(RT11) Indoor coil thermistor(RT12(main)) PS132 Indoor coil thermistor(RT13(sub)) Emergency operation switch Timer short mode point (JPS, JPG) (Refer to page 50.) + } 12V DC How to set “Auto restart function” Cut the Resistor JR07. (Refer to page 51.
PAGE 69
OB272-3.qxp 02.1.26 1:24 PM Page 69 MUH-18RV - E1 MUH-18RV - E2 Outdoor deicer P.C. board R601 5~10V DC(Refer to page 64.) } 220-240V AC + } R.V. coil 220-240V AC CN661 1-2 Defrost thermistor (RT61) (Refer to page 66.) } } } Outdoor fan motor 220-240V AC Fuse 2A/250V Defrost interval time short pin (JP607,R853) (Refer to page 50.) + J9 J8 } 5V DC (Refer to page 64.) + } + } 12V DC 52C 12V DC 69 Jumper wire for change in defrost setting (JPC, JPE) (Refer to page 50.
PAGE 70
OB272-3.qxp 02.1.26 1:24 PM Page 70 MUH-24RV - E1 MUH-30RV - E1 Outdoor deicer P.C. board Defrost thermistor (RT61) Ambient temperature thermistor (RT63) 100 80 Discharge temperature thermistor(RT62) 70 900 60 800 50 700 Resistance(k") Resistance(k") 90 40 30 20 600 500 400 300 200 10 100 0 -20 -10 0 10 20 30 40 Temperature(:) CN661 1-2 Defrost thermistor (RT61) (Refer to page 66.) 0 CN662 1-2 Discharge temperature thermistor (RT62) (Refer to page 66.
PAGE 71
OB272-3.qxp 02.1.26 2:04 PM 12 Page 71 DISASSEMBLY INSTRUCTIONS <"Terminal with lock mechanism" Detaching points> In case of terminal with lock mechanism, detach the terminal as shown below. There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism. The terminal with no lock mechanism can be removed by pulling it out. Check the shape of the terminal and work. (1) Slide the sleeve and check if there is a locking lever or not.
PAGE 72
OB272-3.qxp 02.1.26 1:24 PM Page 72 PHOTOS OPERATING PROCEDURE 3. Removing the electrical box (1) (2) (3) (4) Remove the front panel. (Refer to 1) Remove the electrical cover. Disconnect the connector of the indoor coil thermistor. Disconnect the motor connector (CN211 and CN121) and the vane motor connector (CN151) on the electronic control P.C. board. (5) Remove the screw of the electrical box, remove the electrical box. Photo 3 Screw of the electrical box 4.
PAGE 73
OB272-3.qxp 02.1.26 1:24 PM Page 73 12-2. MSH-30RV - E1 INDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the front panel (1) Remove the screws caps of the front panel. Remove the screws. (2) Pull the panel down to your side slightly and unhook the catches at the top. Photo 1 Front panel Screws 2. Removing the electronic control P.C. board, the receiver P.C. board and the display P.C. board (1) Remove the front panel. (Refer to 1) (2) Remove the screw of the electrical cover.
PAGE 74
OB272-3.qxp 02.1.26 1:24 PM Page 74 OPERATING PROCEDURE PHOTOS 3. Removing the electrical box (1) Remove the front panel. (Refer to 1) (2) Remove the electrical cover. (Refer to 2) (3) Disconnect the connector of the indoor coil thermistor. (4) Disconnect the motor connector (CN211 and CN121) and the vane motor connector (CN151) on the electronic control P.C. board. (5) Remove the screw of ground wire. (6) Remove the fan motor lead wire and indoor coil thermistor from the electrical box.
PAGE 75
OB272-3.qxp 02.1.26 1:24 PM Page 75 12-3. MUH-18RV - E1 MUH-18RV OUTDOOR UNIT E2 OPERATING PROCEDURE PHOTOS 1. Removing the cabinet (1) Remove the screws of the cabinet. (2) Hold the down of the cabinet on the both side to remove the cabinet. Photo 1 Photo 2 Screws Service panel Screws 2. Removing the deicer P.C. board Photo 3 (1) Remove the service panel and the cabinet. (2) Disconnect all the connectors and the terminals on the deicer P.C. board. (3) Remove the deicer P.C. board.
PAGE 76
OB272-3.qxp 02.1.26 1:24 PM Page 76 OPERATING PROCEDURE PHOTOS 3. Removing the outdoor fan motor (1) Remove the cabinet. (Refer to 1) (2) Disconnect the connector remove the clamp of fan motor lead wire. (3) Remove the propeller fan nut and remove the propeller fan. (4) Remove screws fixing the fan motor. Photo 4 propeller fan Set screws of the outdoor fan motor Lead clamps Outdoor fan motor Propeller fan nut Set screws of the outdoor fan motor 4.
PAGE 77
OB272-3.qxp 02.1.26 1:24 PM Page 77 12-4. MUH-24RV - E1 MUH-30RV - E1 OUTDOOR UNIT OPERATING PROCEDURE NOTE: These photos use MUH-30RV - E1 . MUH-24RV - E1 is almost the same as MUH-30RV - E1 . PHOTOS 1. Removing the cabinet (1) Remove the screws of the top panel and the top panel. (2) Remove the screw of the service panel. To remove the service panel, pull it down toward you and unhook the catches on the both sides. (3) Remove the screw of the cover panel. To remove the cover panel.
PAGE 78
OB272-3.qxp 02.1.26 1:24 PM Page 78 OPERATING PROCEDURE PHOTOS 4. Removing the heat exchanger and compressor (1) Remove the screws of the rear panel. Remove the screws of the valve bed and the valve bed. (The valve bed is fixed by the catches on the right and left sides. Lift it to remove.) Open the rear panel to the rear to remove. NOTE : All panels are fixed by catches, and must be removed by up and down. (2) Remove the screws of the side panel and the side panel.
PAGE 79
OB272-3.qxp 02.1.26 1:24 PM 13 Page 79 PARTS LIST MSH-18RV - E1 (WH) MSH-24RV - E1 (WH) 13-1. INDOOR UNIT STRUCTURAL PARTS 13-2. INDOOR UNIT HEAT EXCHANGER 1 8 2 3 4 Optional parts (See back cover.) 9 10 5 6 13-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Symbol NO. Part No.
PAGE 80
OB272-3.qxp 02.1.26 1:24 PM Page 80 MSH-18RV - E1 (WH) MSH-24RV - E1 (WH) 13-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 13-4. ACCESSORY AND REMOTE CONTROLLER 1 13 16 SLEEVE BEARING 2 21 22 15 3 4 14 5 7 12 11 6 INDOOR COIL THERMISTOR 8 9 10 ROOM TEMPERATURE THERMISTOR 13-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Part No.
PAGE 81
OB272-3.qxp 02.1.26 1:24 PM Page 81 MUH-18RV - E1 MUH-18RV - E2 13-5. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS DEFROST THERMISTOR 17 16 18 15 1 2 14 13 12 11 10 3 4 5 6 7 8 9 Part numbers that are circled are not shown in the illustration. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Part No.
PAGE 82
OB272-3.qxp 02.1.26 1:24 PM Page 82 MUH-24RV - E1 13-6.
PAGE 83
OB272-3.qxp 02.1.26 1:24 PM Page 83 MUH-24RV - E1 13-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. NO. Part No.
PAGE 84
OB272-3.qxp 02.1.26 1:24 PM Page 84 MSH-30RV - E1 (WH) 13-7. INDOOR UNIT STRUCTURAL PARTS 13-8. INDOOR UNIT HEAT EXCHANGER 1 2 10 3 8 4 CATCH Optional parts (See back cover.) 5 SCREW CAP 11 12 6 7 13-7. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. NO. 1 2 3 4 5 6 7 8 9 Part No.
PAGE 85
OB272-3.qxp 02.1.26 1:24 PM Page 85 MSH-30RV - E1 (WH) 13-10. ACCESSORY AND REMOTE CONTROLLER 13-9. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 1 20 19 23 24 2 3 SLEEVE BEARING 4 11 18 12 5 6 14 ROOM TEMPERATURE THERMISTOR 13 10 7 FUSE 8 9 VARISTOR 15 16 17 13-9. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Part No.
PAGE 86
OB272-3.qxp 02.1.26 1:24 PM Page 86 MUH-30RV - E1 13-11.
PAGE 87
OB272-3.qxp 02.1.26 1:24 PM Page 87 MUH-30RV - E1 13-11. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Part No.
PAGE 88
OB272-3.qxp 02.1.26 1:24 PM Page 88 MUH-18RV - E1 MUH-18RV - E2 MUH-24RV - E1 MUH-30RV - E1 13-12. ACCESSORY NO. 1 2 14 444 329 444 444 704 704 705 706 2 Q'ty/unit Symbol in Wiring MUH-18RV- MUH-18RV- MUH-24RV- MUH-30RVRemarks Diagram E1 E2 E1 E1 1 1 1 1 6 2 [33 6 2 1 [16 1 Part Name Part No. E02 E02 E02 E02 1 DRAIN SOCKET DRAIN SOCKET DRAIN CAP DRAIN CAP OPTIONAL PARTS 14-1. AIR CLEANING FILTER Model MSH-18RV- E1 MSH-24RV- E1 MSH-30RV- E1 14-2.