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OB207t-1qxp 25/9/97 8:51 PM Page 1
This Servise Manual OB207 deals with MSH-07/09/12/18/24NV-E1,
MUH-07/09/12/18/24NV-E1, MSH-18NV-E2, and MUH-18NV-E2 in
OB176 REVISED EDITION-A issued in July in1997.
Therefore, please refer to OB207, not to OB176 REVISED
EDITION-A, for the above models.
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
No. OB207
SERVICE MANUAL
Wireless type
Models
E1 E1
( )
WH
MSH-07NV - · MUH-07NV -
E1 ( ) E1
WH
MSH-09NV - · MUH-09NV -
E1 ( ) E1
WH
MSH-12NV - · MUH-12
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OB207t-1qxp 25/9/97 8:51 PM Page 2 1 TECHNICAL CHANGES E1 E2 MSH-17NV - MSH-07NV - 1. Indoor electronic control P.C.board has changed. E1 E2 However, it is compatible between and models. 2. Auto restart function is added. E1 E2 MSH-09NV - MSH-09NV - 1. Indoor electronic control P.C.board has changed. E1 E2 However, it is compatible between and models. 2. Auto restart function is added. E1 E2 MSH-12NV - MSH-12NV - 1. Indoor electronic control P.C.board has changed. E1 E2 However, i
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OB207t-1qxp 25/9/97 8:51 PM Page 3 2 PART NAMES AND FUNCTIONS INDOOR UNIT E1 E2 E1 MSH-07NV - MSH-07NV - MSH-18NV - E1 E2 E1 MSH-09NV - MSH-09NV - MSH-24NV - E1 E2 E2 MSH-12NV - MSH-12NV - MSH-18NV - E2 MSH-24NV - E3 MSH-18NV - (When the front panel is open) E1 E1 E1 MSH-07NV - MSH-09NV - MSH-12NV - E1 E1 E1 MSH-07NV - MSH-09NV - MSH-12NV - E2 E2 E2 MSH-07NV - MSH-09NV - MSH-12NV - E2 E2 E2 MSH-07NV - MSH-09NV - MSH-12NV - E1 E1 E2 MSH-18NV - MSH-24NV - MSH-
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OB207t-1qxp 25/9/97 8:51 PM Page 4 E1 E1 E1 E1 E2 MSH-07NV - MSH-09NV - MSH-12NV - MSH-18NV - MSH-18NV - REMOTE CONTROLLER 4
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OB207t-1qxp 25/9/97 8:51 PM Page 5 E1 E1 MSH-07NV - (Serial number 7000201T~) MSH-09NV - (Serial number 7000201T~) E1 E1 MSH-12NV - (Serial number 7000001T~) MSH-24NV - E2 E2 MSH-07NV - MSH-09NV - E2 E2 MSH-12NV - MSH-18NV - (Serial number 7000001T~) E2 E3 MSH-24NV - MSH-18NV - 5
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OB207t-1qxp 25/9/97 8:51 PM Page 6 3 SPECIFICATION Model E1 E2 E1 E2 MSH-07NV - MSH-09NV - Function Cooling Heating Cooling Heating Power supply Single phase,220-240V,50HzSingle phase,220-240V,50Hz 2.2 2.5 2.5 3.1 Capacity kW Capacity R/h 0.8 — 1.1 — Dehumidification K /h INDOOR 492 OUTDOOR 1620 INDOOR 492 OUTDOOR 1620 Air flow Power outlet A 10 10 3.30-3.20 3.15-3.05 4.10-4.00 4.30-4.10 Running current A 710-750 680-720 880-920 920-940 Power input W — — — — Auxiliary
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OB207t-1qxp 25/9/97 8:51 PM Page 7 E1 E2 E1 E2 E3 Model MSH-12NV - MSH-18NV - Cooling Heating Cooling Heating Function Power supply Single phase,220-240V,50HzSingle phase,220-240V,50Hz kW 3.4 4.0 5.1 5.4 Capacity Capacity 1.6 — 2.5 — Dehumidification R/h Air flow K /h INDOOR 558 OUTDOOR 2130-2244 INDOOR 756 OUTDOOR 2142 Power outlet A 10 15 5.75-5.90 5.95-6.10 9.4-9.2 9.2-9.0 Running current A 2030-2120 1980-2070 Power input W 1220-1300 1260-135
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OB207t-1qxp 25/9/97 8:51 PM Page 8 E1 E2 Model MSH-24NV - Function Cooling Heating Power supply Single phase,220-240V,50Hz Capacity kW 6.0 6.2 Capacity Dehumidification R/h 3.1 — Air flow K /h 816 Power outlet A 25 A 12.6-11.7 11.5-11.0 Running current W Power input 2720-2750 2470-2580 Auxiliary heater A(kW) — Electrical data Power factor % 98 Starting current A 59 Compressor motor current A
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OB207t-1qxp 25/9/97 8:51 PM Page 9 E1 E2 E3 Refer to the Service Manual OB185 when MSH-07/09/12NV- , MSH-07/09/12/18NV- , and MSH-18NV- are E1 connected with MXZ-32NV- as multi system units. Model E1 E2 E1 E2 MSH-07NV- (INDOOR UNIT) MSH-09NV- (INDOOR UNIT) Function Cooling Heating Cooling Heating Power supply Single phase,220-240V,50Hz Single phase,220-240V,50Hz kW — — — — Capacity Capacity R/h —
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OB207t-1qxp 25/9/97 8:51 PM Page 10 E1 E2 E3 Refer to the Service Manual OB185 when MSH-07/09/12NV- , MSH-07/09/12/18NV- , and MSH-18NV- are E1 connected with MXZ-32NV- as multi system units. E1 E2 E2 E3 Model MSH-12NV- (INDOOR UNIT)MSH-18NV- (INDOOR UNIT) Function Cooling Heating Cooling Heating Power supply Single phase,220-240V,50Hz Single phase,220-240V,50Hz Capacity kW — — — — Capacity Dehumidification R
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OB207t-1qxp 25/9/97 8:51 PM Page 11 4 OUTLINES AND DIMENSIONS Unit: mm E1 E1 E2 E2 MSH-07NV - MSH-09NV - MSH-07NV - MSH-09NV - INDOOR UNIT E1 E1 E2 E2 MUH-07NV - MUH-09NV - MUH-07NV - MUH-09NV - OUTDOOR UNIT 11
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OB207t-1qxp 25/9/97 8:51 PM Page 12 Unit: mm E1 E2 MSH-12NV - MSH-12NV - INDOOR UNIT 9.52 E1 E2 MUH-12NV - MUH-12NV - OUTDOOR UNIT If the right/left sides or back side is vacant,the front has only to be 50cm unobstructed. 12 If the front or right/left sides are vacant, the top has only to be 10cm unobstructed.
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OB207t-1qxp 25/9/97 8:51 PM Page 13 Unit: mm E1 E1 E2 E2 E3 MSH-18NV - MSH-24NV - MSH-18NV - MSH-24NV - MSH-18NV - INDOOR UNIT 4 4holes 1 holes 11 155 20 20 Indoor unit Indoor unit 1 150 50 6 648 48 2 217 17 9 995 95 450 450 450 450 438 438 352 352 W Wa all hole ll hole [ [7 75 5 Installation plate Installation plate 1015 1015 190 190 5 5 Installation plate Installation plate Liquid line Liquid line [ [8 8-0.5m -0.5m G Gas line as line [ [12-0.43m 12-0.43m A Air in ir in { Insulation Insu
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OB207t-1qxp 25/9/97 8:52 PM Page 14 E1 E2 MUH-24NV- MUH-24NV- Unit : mm (inch) 5 14 R20 Outdoor Unit-Necessary surrounding clearance 185 185 (7-9/32) (7-9/32) 500(19-11/16) Outdoor Unit-Necessary surrounding clearance Note:Allow adequate Air intake (Concentrated installation) The upper side must be open. upper clearance 10 10 Front opening Air intake Air outlet 100 10 10 Service space For 10 units or less 1000 500 Terminal block for indoor and outdoor unit connection 870(34-1/4) 7 295
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OB207t-1qxp 25/9/97 8:52 PM Page 15 5 WIRING DIAGRAM MODELS WIRING DIAGRAM E1 MSH-07NV - E1 MSH-09NV - INDOOR UNIT h h h ~ h h h ~/N FOR MULTI SYSTEM L 12VDC 3 TO OUTDOOR 2 UNIT N CONNECTING ; SYMBOL NAME SYMBOL NAME SYMBOL NAME C11 INDOOR FAN CAPACITOR NR11 VARISTOR TB TERMINAL BLOCK F12 FUSE(93:) RT11 ROOM TEMPERATURE THERMISTOR MV VANE MOTOR F11 FUSE(3.15A) INDOOR COIL THERMISTOR SOLID STATE RELAY RT12 SR11 INDOOR FAN MOTOR CONTACTOR MF 52C NOTE:1. For the outdoor electric wiring refer to
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OB207t-1qxp 25/9/97 8:52 PM Page 16 E1 MODEL WIRING DIAGRAM MSH-12NV - INDOOR UNIT h h h ~ h h h ~/N FOR MULTI SYSTEM L 12VDC 3 TO OUTDOOR 2 UNIT N CONNECTING ; SYMBOL NAME SYMBOL NAME SYMBOL NAME C11 INDOOR FAN CAPACITOR VARISTOR TERMINAL BLOCK NR11 TB FUSE(93:) ROOM TEMPERATURE THERMISTOR VANE MOTOR F12 RT11 MV FUSE(3.15A) INDOOR COIL THERMISTOR SOLID STATE RELAY F11 RT12 SR11 MF INDOOR FAN MOTOR 52C CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring
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OB207t-1qxp 25/9/97 8:52 PM Page 17 E1 MSH-18NV - MODEL WIRING DIAGRAM INDOOR UNIT h h h h h h SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR FAN CAPACITOR VARISTOR TERMINAL BLOCK C11 NR11 TB FUSE(93:) ROOM TEMPERATURE THERMISTOR SURGE ABSORBER F12 RT11 DSAR F11 FUSE(3.15A) RT12 INDOOR COIL THERMISTOR HIC1 DC/DC CONVERTER MF INDOOR FAN MOTOR IC141 HYBRID IC MV VANE MOTOR 52C CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use c
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OB207t-1qxp 25/9/97 8:52 PM Page 18 E1 MSH-24NV - MODEL WIRING DIAGRAM TB INDOOR UNIT 220-240V~ 3 RED h CN RT12 112 F12 220-240V~ HIC1 2 WHT h IC141 CN RT11 111 L NF 2 BLU BLU TO OUTDOOR 3 BRN 3 4 BRN CN UNIT 121 CN201 52C YLW 1 4 N h CONNECTING 3 h BLU 3 GRY TRANS CN211 WHT 1 MF BLU 4 RED WHT F11 2 BLK 1 POWER CN SUPPLY CN CN 151 101 102 ELECTRONIC CONTROL P.C BOARD CORD ~/N 220-240V 5 50Hz 3 3 MV RECEIVER DISPLAY CIRCUIT BREAKER P.C.BOARD P.C.BOARD GRN/YLW REMOTE CONTROLLER SYMBOL NAME SYMB
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OB207t-1qxp 25/9/97 8:52 PM Page 19 E2 E2 E2 MSH-07NV - MSH-09NV - MSH-12NV - MODELS WIRING DIAGRAM INDOOR UNIT TO OUTDOOR TB L SR11 CN BRN UNIT h RT12 112 CONNECTING BRN HIC1 CN 3 RT11 12VDC 111 RED h h BLU F12 BLK CN201 1 3 1 2 h 220-240V~ WHT 3 BLU NR11 GRY 52C CN 2 3 h 4 2 121 YLW 2 3 N BLU TRANS h BLU BRN MF 1 C11 3 4 WHT BLU F11 2 5 1 CN RED 1 6 122 POWER CN211 CN LD101 151 SUPPLY GUARD ELECTRONIC CONTROL P.C BOARD PLATE CORD ~/N 220-240V 5 5 50Hz POWER MONITOR, MV RECEIVER CIRCUIT BR
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OB207t-1qxp 25/9/97 8:52 PM Page 20 E2 MUH-12NV - MODEL WIRING DIAGRAM OUTDOOR UNIT 21S4 RT61 TB MF 12VDC 3 h RED CN661 CN721 1 X62 CN730 RED RED 1 1 SR61 220-240V~ 2 WHT h ORN WHT 2 2 WHT 3 3 N BLU h BLK BLK TRANS 4 4 h CN711 52C TAB20 X62 h h 4 3 DEICER P.C.BOARD GRN/YLW C WHT C1 BLU RED MC R S BLK SYMBOL NAME SYMBOL NAME SYMBOL NAME SYMBOL NAME OUTDOOR FAN MOTOR COMPRESSOR CAPACITOR REVERSING VALVE COIL RELAY FAN MOTOR CAPACITOR C1 MF X62 C65 F61 FUSE(2A) NR61 VARISTOR 2
