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.
CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················3 3. SPECIFICATION·················································6 4. OUTLINES AND DIMENSIONS ······················ 11 5. WIRING DIAGRAM ··········································15 6. REFRIGERANT SYSTEM DIAGRAM ··············24 7. PERFORMANCE CURVES ······························29 8. MICROPROCESSOR CONTROL ····················33 9. SERVICE FUNCTIONS ····································44 10. TROUBLESHOOTING······································47 11. DISASSEMBLY INSTRUCTIONS·····················60 12. PARTS LIST······················································70 13. OPTIONAL PARTS ····································BACK
MSH-18NV MSH-18NV MSH-18NV -
E1 E2 E3
Refer to the Service Manual OB185 when MSH-07/09/12NV- E1 , MSH-07/09/12/18NV- E2 , and MSH-18NV- E3 are connected with MXZ-32NV- E1 as multi system units.
1
TECHNICAL CHANGES
MSH-17NV - E1 MSH-07NV - E2 1. Indoor electronic control P.C.board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added.
MSH-09NV - E1 MSH-09NV - E2 1. Indoor electronic control P.C.board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added.
MSH-12NV - E1 MSH-12NV - E2 1. Indoor electronic control P.C.board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added.
MSH-18NV - E2 MSH-18NV - E3 1. Indoor electronic control P.C.board has changed. However, it is compatible between E2 and E3 models. 2. Auto restart function is added.
MSH-24NV - E1 MSH-24NV - E2 1. Indoor electronic control P.C.board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added.
- E1 (Serial number 7000201T~) MSH-09NV - E1 (Serial number 7000201T~) - E1 (Serial number 7000001T~) MSH-24NV - E1 - E2 MSH-09NV - E2 - E2 MSH-18NV - E2 (Serial number 7000001T~) - E2 MSH-18NV - E3
5
3
SPECIFICATION Model Function Power supply Capacity Capacity Dehumidification Air flow Power outlet Running current Power input Auxiliary heater MSH-07NV Cooling E1 E2
Heating
MSH-09NV - E1 E2 Heating Cooling
Single phase,220-240V,50Hz Single phase,220-240V,50Hz 3.1 2.5 2.5 2.2 kW -- 1.1 -- 0.8 R/h K /h INDOOR 492 OUTDOOR 1620 INDOOR 492 OUTDOOR 1620 A A W A(kW) % A A A 2.80-2.70 3.30-3.20 710-750 -- 98-98 25 2.65-2.55 3.60-3.50 10 3.15-3.05 680-720 -- 4.10-4.00 880-920 -- 98-96 25 3.80-3.60 10 4.30-4.10 920-940 -- 97-96
Electrical data
Power factor Starting current Compressor motor current Fan motor current
Coefficient of performance(C.O.P) Model Compressor Indoor fan motor Outdoor fan motor Output Winding resistance(at20:) Model Winding resistance(at20:) Model Winding resistance(at20:) Width Indoor unit Dimensions Outdoor unit Indoor unit Outdoor unit Air direction Sound level (Hi) Fan speed (Hi) Special remarks Fan speed regulator Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit kg k" k" k" RT11(at25:) Thermistor RT12(at25:) RT61(at0:) NOTE:Test conditions Cooling : Indoor Outdoor Heating : Indoor Outdoor DB27°C / WB19°C DB35°C / WB24°C DB20°C /WB15.5°C DB 7°C / WB 6°C dB dB rpm rpm Height Depth Width Height Depth Weight " mm mm mm mm mm mm kg kg " W "
Model Function Power supply Capacity Capacity Dehumidification Air flow Power outlet Running current Power input Auxiliary heater Electrical data Power factor Starting current Compressor motor current Fan motor current Coefficient of performance(C.O.P) Model Compressor Indoor fan motor Outdoor fan motor Output Winding resistance(at20:) Model Winding resistance(at20:) Model Winding resistance(at20:) Width Indoor unit Dimensions Outdoor unit Indoor unit Outdoor unit Air direction Sound level (Hi) Fan speed (Hi) Special remarks Fan speed regulator Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit kg k" k" k" RT11(at25:) Thermistor RT12(at25:) RT61(at0:) NOTE:Test conditions Cooling : Indoor Outdoor Heating : Indoor Outdoor DB27°C / WB19°C DB35°C / WB24°C DB20°C /WB15°.5C DB 7°C / WB 6°C dB dB rpm rpm Height Depth Width Height Depth Weight " mm mm mm mm mm mm kg kg " W " kW R/h A A W A(kW) % A A A
Model Function Power supply Capacity Capacity Dehumidification Air flow Power outlet Running current Power input Auxiliary heater Electrical data Power factor Starting current Compressor motor current Fan motor current Coefficient of performance(C.O.P) Model Compressor Indoor fan motor Outdoor fan motor Output Winding resistance(at20:) Model Winding resistance(at20:) Model Winding resistance(at20:) Width Indoor unit Dimensions Outdoor unit Indoor unit Outdoor unit Air direction Sound level (Hi) Fan speed Special remarks (Hi) Fan speed regulator Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit kg k" k" k" RT11(at25:) Thermistor RT12(at25:) RT61(at0:) NOTE:Test conditions Cooling : Indoor Outdoor Heating : Indoor Outdoor DB27°C / WB19°C DB35°C / WB24°C DB20°C /WB15.5°C DB 7°C / WB 6°C dB dB rpm rpm Height Depth Width Height Depth Weight " mm mm mm mm mm mm kg kg " W " kW R/h K /h A A W A(kW) % A A A Cooling
Refer to the Service Manual OB185 when MSH-07/09/12NVconnected with MXZ-32NV- E1 as multi system units. Model Function Power supply Capacity Capacity Dehumidification Air flow Power outlet Running current Power input Auxiliary heater Electrical data Power factor Starting current Compressor motor current Fan motor current Coefficient of performance(C.O.P) Model Compressor Indoor fan motor Outdoor fan motor Output Winding resistance(at20:) Model Winding resistance(at20:) Model Winding resistance(at20:) Width Indoor unit Dimensions Outdoor unit Indoor unit Outdoor unit Air direction Sound level (Hi) Fan speed Special remarks (Hi) Fan speed regulator Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit kg k" k" k" RT11(at25:) Thermistor NOTE:Test conditions Cooling : Indoor Outdoor Heating : Indoor Outdoor RT12(at25:) RT61(at0:) DB27°C / WB19°C DB35°C / WB24°C DB20°C /WB15.5°C DB 7°C / WB 6°C dB dB rpm rpm Height Depth Width Height Depth Weight " mm mm mm mm mm mm kg kg " W " kW R/h K /h A A W A(kW) % A A A
Please refer to Service manual OB185 for capacity.
9
Refer to the Service Manual OB185 when MSH-07/09/12NVconnected with MXZ-32NV- E1 as multi system units. Model Function Power supply Capacity Capacity Dehumidification Air flow Power outlet Running current Power input Auxiliary heater Electrical data Power factor Starting current Compressor motor current Fan motor current Coefficient of performance(C.O.P) Model Compressor Indoor fan motor Outdoor fan motor Output Winding resistance(at20:) Model Winding resistance(at20:) Model Winding resistance(at20:) Width Indoor unit Dimensions Outdoor unit Indoor unit Outdoor unit Air direction Sound level (Hi) Fan speed Special remarks (Hi) Fan speed regulator Indoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Outdoor unit kg k" k" k" RT11(at25:) Thermistor RT12(at25:) RT61(at0:) NOTE:Test conditions Cooling : Indoor Outdoor Heating : Indoor Outdoor DB27°C / WB19°C DB35°C / WB24°C DB20°C /WB15.5°C DB 7°C / WB 6°C dB dB rpm rpm Height Depth Width Height Depth Weight " mm mm mm mm mm mm kg kg " W " kW R/h K /h A A W A(kW) % A A A
Please refer to Service manual OB185 for capacity.
10
4
OUTLINES AND DIMENSIONS Unit: mm
MSH-07NV - E1 INDOOR UNIT
MSH-09NV - E1
MSH-07NV - E2
MSH-09NV - E2
MUH-07NV - E1 OUTDOOR UNIT
MUH-09NV - E1
MUH-07NV - E2
MUH-09NV - E2
11
Unit: mm
MSH-12NV - E1 INDOOR UNIT
MSH-12NV - E2
9.52
MUH-12NV - E1 MUH-12NV - E2 OUTDOOR UNIT
es ft sid ht/le s only rig t or p ha ed. fron e to t f the cant, th obstruc I a re v 0cm un a e1 to b
If the right/left sides or back side is vacant,the front has only to be 50cm unobstructed.
12
Unit: mm
MSH-18NV - E1 INDOOR UNIT
MSH-24NV - E1
MSH-18NV - E2
MSH-24NV - E2 4holes 11!20 11
MSH-18NV - E3 Indoor unit 217 20
150 60 40 995
648
450
438 Installation plate 1015 190 5
352 Wall hole [75 Installation plate
Air in
{ Air out
Liquid line [8-0.5m Gas line [12-0.43m Insulation [50 O.D [28 [28 I.D
320
50
775
190 Power supply cord Lead to right 2m Lead to left 1m
Drain hose [16 Insulation [28
56 160
17.5
MUH-18NV - E1
MUH-18NV - E2
MUH-18NV - E3
OUTDOOR UNIT
s side ly t/left righ has on t or fron , the top ucted. e If th acant nobstr v are 10cm u e to b
If the right/left sides or back side is vacant,the front has only to be 50cm unobstructed.
3
297
450
254
13
MUH-24NV- E1
185 (7-9/32) Air intake 10 Front opening 17 500(19-11/16) Note:Allow adequate upper clearance 10
Outdoor Unit-Necessary surrounding clearance (Concentrated installation) The upper side must be open.
185 (7-9/32)
39.5 27.5 330(13) 362(14-1/4)
Air intake 500 10 500 150
200
15
100
10
Air outlet
MUH-24NV- E2
For 10 units or less
1000
Service space
870(34-1/4) 7 302 Outlet guide installation hole Ground terminal Handle for moving Service panel Handle for moving 524 553 850(33-7/16) Terminal block for power line 295(11-5/8) 24(1)
Terminal block for indoor and outdoor unit connection
Handle for moving
Side air intake
Rear fresh air intake
441
403
337
200 352 Refrigerant-pipe flared connection [15.88 5/8F Refrigerant-pipe flared connection [9.52 3/8F 60 60 120 Knock out hole for front piping (refrigerant,drainage and wiring) Knock out holes for power line 2-[27 42 33 45 Knock out hole for right piping (refrigerant,drainage R2 and wiring) Bottom piping hole R6
138
179
23
33
95
Rear piping hole
40
524
2-12!23 Oval holes (standard bolt M10) Drain hole
104
0
R2
0
80
Drain hole
Unit : mm (inch)
12
17
2-U-shaped notched holes
65 Front right piping holesdetail figures
25 max. Standard bolt length
53
45
14 Outdoor Unit-Necessary surrounding clearance
5
WIRING DIAGRAM MODELS WIRING DIAGRAM
MSH-07NV - E1 MSH-09NV - E1 INDOOR UNIT
g g g g
~
g g
~/N
FOR MULTI SYSTEM TO OUTDOOR 12VDC UNIT CONNECTING L 3 2 N ;
SYMBOL C11 F12 F11 MF
NAME INDOOR FAN CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR
SYMBOL NR11 RT11 RT12 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR CONTACTOR
SYMBOL TB MV SR11
NAME TERMINAL BLOCK VANE MOTOR SOLID STATE RELAY
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MUH-07NV - E1 MUH-09NV - E1 OUTDOOR UNIT
MODELS WIRING DIAGRAM
g g g
g
g
g
g
SYMBOL C1 C65 52C F61 MC
NAME COMPRESSOR CAPACITOR OUTDOOR FAN MOTOR CAPACITOR CONTACTOR FUSE(2A) COMPRESSOR(INNER THERMOSTAT)
SYMBOL MF NR61 RT61 SR61 TB
NAME OUTDOOR FAN MOTOR VARISTOR DEFROST THERMISTOR SOLID STATE RELAY TERMINAL BLOCK
SYMBOL X62 21S4 IC881
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL DC/DC CONVERTER
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
15
MSH-12NV - E1 INDOOR UNIT
MODEL WIRING DIAGRAM g g g g
~
g g
~/N
FOR MULTI SYSTEM TO OUTDOOR 12VDC UNIT CONNECTING L 3 2 N ;
SYMBOL C11 F12 F11 MF
NAME INDOOR FAN CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR
SYMBOL NR11 RT11 RT12 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR CONTACTOR
SYMBOL TB MV SR11
NAME TERMINAL BLOCK VANE MOTOR SOLID STATE RELAY
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MUH-12NV - E1 OUTDOOR UNIT
MODEL WIRING DIAGRAM
g g g
g
g
g
SYMBOL C1 C65 52C F61 MC
NAME COMPRESSOR CAPACITOR OUTDOOR FAN MOTOR CAPACITOR CONTACTOR FUSE(2A) COMPRESSOR(INNER THERMOSTAT)
SYMBOL MF NR61 RT61 SR61 TB
NAME OUTDOOR FAN MOTOR VARISTOR DEFROST THERMISTOR SOLID STATE RELAY TERMINAL BLOCK
SYMBOL X62 21S4 IC881
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL DC/DC CONVERTER
NOTE:1. Use copper conductors only.(For field wiring) 2. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
16
MSH-18NV - E1 INDOOR UNIT
MODEL WIRING DIAGRAM g g g g g g
SYMBOL C11 F12 F11 MF MV
NAME INDOOR FAN CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR VANE MOTOR
SYMBOL NR11 RT11 RT12 IC141 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR HYBRID IC CONTACTOR
SYMBOL TB DSAR HIC1
NAME TERMINAL BLOCK SURGE ABSORBER DC/DC CONVERTER
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MUH-18NV - E1 OUTDOOR UNIT
MODEL WIRING DIAGRAM
g g g g
g
SYMBOL C1 C65 DSAR F61 MC
NAME COMPRESSOR CAPACITOR OUTDOOR FAN MOTOR CAPACITOR SURGE ABSORBER FUSE(2A) COMPRESSOR
SYMBOL MF NR61 RT61 SR61 TB VARISTOR
NAME OUTDOOR FAN MOTOR DEFROST THERMISTOR SOLID STATE RELAY TERMINAL BLOCK
SYMBOL X62 21S4 52C
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL CONTACTOR
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
17
MSH-24NV - E1 INDOOR UNIT
MODEL WIRING DIAGRAM 220-240V~ 3 TB RED g 220-240V~ 2 g WHT BLU2
F12 NF 3 BLU 4
HIC1 CN201
IC141 NR11
CN 112 CN 111 CN 121
RT12 RT11 3 BRN YLW GRY WHT RED BLK
C11
L TO OUTDOOR BRN UNIT CONNECTING N g BLU BLU
1
3 1 WHT CN 151
4 52C g3 TRANS F11
CN211
POWER SUPPLY CORD ~/N 220-240V 50Hz RECEIVER
4 2 1
MF
CN 101
CN 102
ELECTRONIC CONTROL P.C BOARD
3
3
5 MV
DISPLAY P.C.BOARD
CIRCUIT BREAKER GRN/YLW
P.C.BOARD
REMOTE CONTROLLER
SYMBOL C11 F12 F11 MF MV
NAME INDOOR FAN MOTOR CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR VANE MOTOR
SYMBOL NR11 RT11 RT12 IC141 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR HYBRID IC CONTACTOR
SYMBOL TB HIC1 NF
NAME TERMINAL BLOCK DC/DC CONVERTER NOISE FILTER
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MODEL WIRING DIAGRAM MUH-24NV - E1 X1 OUTDOOR UNIT 6 1 MF TB 12VDC 3 g 220-240V~2 g WHT YLW YLW 5 BLK BLK 4 WHT WHT 3 ORN ORN 2 RED RED
RT61 BLK BLK 2 3 4 SR61 CN661 CN721
5
BRN CN730 3 2 1
21S4
3 C2 CN711 1
1
X62 NR61 IC881
TO INDOOR UNIT CONNECTING
RED F WHT ORN RED
Ng
BLU
TB2 26F1
RED 7 BLU 8
X1
g TAB20 YLW 52C
F61
TRANS
VLT
52C1 CR
3 g4 g CZ WHT 52C1 1 2 C1
DEICER P.C. BOARD WHT C
GRN/YLW
DSAR WHT
VLT WHT BLU
YLW WHT
RED S MC R BLK SYMBOL F 26F1 IC881 CR CZ FUSE(2A) THERMOSTAT (AIR FLOW CONTROL) DC/DC CONVERTER SURGE ABSORBER 2 SURGE ABSORBER 3 NAME
SYMBOL C1 C2 DSAR F61 MC
NAME COMPRESSOR CAPACITOR OUTDOOR FAN MOTOR CAPACITOR SURGE ABSORBER 1 FUSE(2A)
SYMBOL MF NR61 RT61 SR61
NAME OUTDOOR FAN MOTOR
SYMBOL X62 21S4 52C 52C1 X1
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL CONTACTOR COMPRESSOR CONTACTOR FAN MOTOR RELAY
VARISTOR DEFROST THERMISTOR SOLID STATE RELAY
COMPRESSOR TB. TB2 TERMINAL BLOCK
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
18
MSH-07NV - E2 MSH-09NV - E2 MSH-12NV - E2 INDOOR UNIT TO OUTDOOR TB L g BRN UNIT CONNECTING BRN 12VDC 3 g 220-240V~ 2 g F12 WHT
MODELS WIRING DIAGRAM
SR11 HIC1 RED BLU BLU
CN 112 CN 111
RT12 RT11 3 BLK 1 GRY
1 2 BLU
N g BLU BLU GRN/YLW
1 GUARD PLATE
POWER SUPPLY CORD ~/N 220-240V 50Hz
GRN/YLW
CN 122
LD101 5
CN 151
3 2 1 CN211 ELECTRONIC CONTROL P.C BOARD
CN201 3 2 1
g 3 g 4 52C TRANS
NR11
CN 121
F11
C11
2 3 4 WHT 5 RED 6 YLW BRN
MF
5
POWER MONITOR, CIRCUIT BREAKER FOR MULTI SYSTEM L 12VDC 3 2 N REMOTE CONTROLLER
RECEIVER P.C.BOARD
MV
TO OUTDOOR UNIT CONNECTING
SYMBOL C11 F12 F11 MF
NAME INDOOR FAN MOTOR CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR
SYMBOL NR11 RT11 RT12 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR CONTACTOR
SYMBOL TB HIC1 SR11 MV
NAME TERMINAL BLOCK DC/DC CONVERTER SOLID STATE RELAY VANE MOTOR
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MUH-07NV - E2 MUH-09NV - E2 OUTDOOR UNIT TB 3 g RED 2 N g g BLU
MODELS WIRING DIAGRAM BLK CN661
CN721
BLK
RT61
21S4
12VDC TO INDOOR UNIT CONNECTING 220-240V~
F61 1 CN730 IC881 TRANS
X62 SR61
MF C65 1 RED 2 WHT 3 4 BLK CN711 WHT C g C1 g RED S BLK
NR61
TAB20 WHT
52C g4 3 g
X62
DEICER P.C. BOARD
BLU GRN/YLW
MC R NAME FAN MOTOR CAPACITOR DC/DC CONVERTER TERMINAL BLOCK
SYMBOL C1 F61 MC SR61 FUSE(2A)
NAME COMPRESSOR CAPACITOR COMPRESSOR SOLID STATE RELAY
SYMBOL MF NR61 RT61
NAME OUTDOOR FAN MOTOR
SYMBOL X62 21S4 52C
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL CONTACTOR
SYMBOL C65 IC881 TB
VARISTOR DEFROST THERMISTOR
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
19
MODEL WIRING DIAGRAM MUH-12NV - E2 OUTDOOR UNIT BLK BLK
RT61 TB 12VDC TO INDOOR UNIT CONNECTING 3 g RED 1 CN730 F61 CN661
21S4
MF C65 SR61
CN721
X62 IC881 NR61
220-240V~ 2
g WHT g BLU
N
g TAB20 GRN/YLW BLU
TRANS
RED RED 1 1 WHT ORN 2 2 WHT 3 3 BLK 4 4 BLK
52C g4 3g C1
CN711 X62 DEICER P.C.BOARD
RED BLK
WHT S
C
MC
R
SYMBOL C1 F61 MC SR61 FUSE(2A)
NAME COMPRESSOR CAPACITOR COMPRESSOR SOLID STATE RELAY
SYMBOL MF NR61 RT61
NAME OUTDOOR FAN MOTOR
SYMBOL X62 21S4 52C
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL CONTACTOR
SYMBOL C65 IC881 TB
NAME FAN MOTOR CAPACITOR DC/DC CONVERTER TERMINAL BLOCK
VARISTOR DEFROST THERMISTOR
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
20
MSH-18NV - E2 INDOOR UNIT
MODEL WIRING DIAGRAM g g g g g
g
~/N
FOR MULTI SYSTEM TO OUTDOOR 12VDC UNIT CONNECTING L 3 2 N ;
SYMBOL C11 F12 F11 MF MV
NAME INDOOR FAN CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR VANE MOTOR
SYMBOL NR11 RT11 RT12 IC141 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR HYBRID IC CONTACTOR
SYMBOL TB DSAR HIC1
NAME TERMINAL BLOCK SURGE ABSORBER DC/DC CONVERTER
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MODEL WIRING DIAGRAM MUH-18NV - E2 OUTDOOR UNIT
g g g g
g
SYMBOL C1 C65 DSAR F61 MC
NAME COMPRESSOR CAPACITOR OUTDOOR FAN MOTOR CAPACITOR SURGE ABSORBER FUSE(2A) COMPRESSOR
SYMBOL MF NR61 RT61 SR61 TB VARISTOR
NAME OUTDOOR FAN MOTOR DEFROST THERMISTOR SOLID STATE RELAY TERMINAL BLOCK
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
21
MSH-24NV - E2 INDOOR UNIT
MODEL WIRING DIAGRAM TB 220-240V~ 3 g RED 220-240V~ 2 g WHT L CN 112 CN 111 CN 121
F12 BLU 2
HIC1 NF 3BLU 4 CN201
RT12 RT11 3 BRN YLW GRY WHT RED BLK
IC141 NR11
TRANS
BLU
C11
TO OUTDOOR BRN UNIT CONNECTING N g BLU POWER SUPPLY CORD ~/N 220-240V 50Hz
1
3 1 WHT CN 151
4 g3 52C F11
CN211
4 2 1
MF
CN 101
CN 102
ELECTRONIC CONTROL P.C BOARD 5
3 RECEIVER
3
MV
DISPLAY P.C.BOARD
CIRCUIT BREAKER GRN/YLW
P.C.BOARD
REMOTE CONTROLLER
SYMBOL C11 F12 F11 MF MV
NAME INDOOR FAN CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR VANE MOTOR
SYMBOL NR11 RT11 RT12 IC141 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR HYBRID IC CONTACTOR
SYMBOL TB NF HIC1
NAME TERMINAL BLOCK NOISE FILTER DC/DC CONVERTER
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MODEL WIRING DIAGRAM MUH-24NV - E2 OUTDOOR UNIT X1 6 MF 12VDC SR61
RT61 BLK BLK
YLW 5 YLW 1 BLK 4 BLK WHT 3 WHT 3 ORN 2 ORN RED 1 RED
5
BRN CN711 1 2 3 4 CN661
21S4
C2
CN721
TB 3
CN730 3 2 1
X62 NR61 IC881
TO INDOOR UNIT CONNECTING
g
RED WHT ORN
RED
RED 8
Ng
VLT
TB2 26F1 BLU 7 BLU A1 DSAR WHT
X1 A2
g TAB20 YLW 52C
F61
220-240V~ 2 g WHT F
TRANS
52C1
3 g 4g
DEICER P.C. BOARD
GRN/YLW
VLT WHT BLU
CR
YLW WHT
CZ WHT 52C1 WHT C 1 2 C1 RED S MC R BLK
SYMBOL C1 C2 DSAR CR CZ F61 MC
NAME COMPRESSOR CAPACITOR FAN MOTOR CAPACITOR SURGE ABSORBER 1 SURGE ABSORBER 2 SURGE ABSORBER 3 FUSE(2A) COMPRESSOR
SYMBOL MF NR61 RT61 SR61 TB,TB2 F 26F1 VARISTOR
NAME OUTDOOR FAN MOTOR DEFROST THERMISTOR SOLID STATE RELAY TERMINAL BLOCK FUSE(2A) THERMOSTAT (AIR FLOW CONTROL)
SYMBOL X62 21S4 52C 52C1 IC881 X1
NAME REVERSING VALVE COIL RELAY REVERSING VALVE COIL CONTACTOR COMPRESSOR CONTACTOR DC/DC CONVERTER FAN MOTOR RELAY
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
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MSH-18NV - E3 INDOOR UNIT
MODEL WIRING DIAGRAM TO OUTDOOR TB UNIT L g BRN CONNECTING BRN 12VDC 3 g 220-240V~ 2 g Ng BLU
NAME INDOOR FAN CAPACITOR FUSE(93:) FUSE(3.15A) INDOOR FAN MOTOR VANE MOTOR
SYMBOL NR11 RT11 RT12 IC141 52C VARISTOR
NAME ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR HYBRID IC CONTACTOR
SYMBOL TB DSAR HIC1
NAME TERMINAL BLOCK SURGE ABSORBER DC/DC CONVERTER
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector
MODEL WIRING DIAGRAM MUH-18NV - E3 OUTDOOR UNIT RT61 12VDC TO INDOOR UNIT CONNECTING 3 TB g g RED WHT CN730 CN661
21S4
52C VLT VLT
BLK
BLK
MF 1 RED 1 RED 2 WHT 2 ORN WHT 3 3 BLK BLK 4 4
1
CN721
CN720 SR61
220-240V~ 2 N
WH T g BLU
IC881
g DSAR TAB20 WHT NO BLU
TRANS
NR61
g F61 TAB21
X62 CN711
DEICER P.C.BOARD 52C COM C1 WHT RED BLK S C
GRN/YLW
C65
X62
MC
R
SYMBOL C1 C65 DSAR F61 MC
NAME COMPRESSOR CAPACITOR OUTDOOR FAN MOTOR CAPACITOR SURGE ABSORBER FUSE(2A) COMPRESSOR
SYMBOL MF NR61 RT61 SR61 TB VARISTOR
NAME OUTDOOR FAN MOTOR DEFROST THERMISTOR SOLID STATE RELAY TERMINAL BLOCK
NOTE:1. Use copper conductors only.(For field wiring) 2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers. 3. Symbols below indicate. : Terminal block, : Connector 4. "g"show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
1.Slide the sleeve. 2.Pull the wire while pushing the locking lever.
EVACUATION PROCEDURES(AIR PURGE) Connect the refrigerant pipes (both the liquid and gas pipes) between the indoor and the outdoor units.
Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe.(The stop valve will not work in its initial state fresh out of the factory (totally closed with cap on))
When vacuuming Connect the gage manifold valve and the vacuum pump to the service port of the stop valve on the liquid pipe side of the outdoor unit.
Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gage indicates 0.1 Mpa.
Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the vacuum pump.
Leave it as it is for one or two minutes. Make sure the pointer of the gage manifold valve remains in the same position.
, Remove the gage manifold valve quickly from the service port of the stop valve. After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides. Operating without fully opening lowers the performance and causes trouble. Pipe length : 7m maximum No gas charge is needed Pipe length exceeding 7m Charge the prescribed amount of gas Tighten the cap to the service port to obtain the initial status. Retighten the cap.
Leak test
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7
PERFORMANCE CURVES
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. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE Rated voltage : ±10% (198 ~ 264V),50Hz
(2) AIR FLOW Air flow should be set at MAX.
(3) MAIN READINGS (1) Indoor intake air wet-bulb temperature : (2) Indoor outlet air wet-bulb temperature : (3) Outdoor intake air dry-bulb temperature : (4) Total input: (5) Indoor intake air dry-bulb temperature : (6) Outdoor intake air wet-bulb temperature : (7) Total input : °CWB °CWB °CDB W °CDB °CWB W
} }
Cooling
Heating
Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb/dry-bulb temperature difference 1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun. Check that the air filter is cleaned. Open windows and doors of room. Press the EMERGENCY OPERATION switch once(twice) to start the EMERGENCY COOL(HEAT) MODE. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature. 10 minutes later, measure temperature again and check that the temperature does not change.
NOTE:The above curves are for the heating operation without any frost.
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation x Both indoor and outdoor unit are under the same temperature/humidity condition. Dry-bulb temperature 20 25 30 Relative humidity(%) 50 60 70
Air flow should be set at MAX. z The unit of pressure has been changed to MPa on the international system of units(SI unit system). f The conversion factor is : 1(MPa · G) =10.2(kgf/f · G)
HEAT operation 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 6,12,14.5°C
Once the controls are set, the same operation mode can be repeated by simply turning the OPERATE/STOP button ON. Indoor unit receives the signal with a beep tone. When the system turns off, 3-minute time delay will operate to protect system from overload and compressor will not restart for 3 minutes.
8-1. "I FEEL CONTROL" ( ) OPERATION (1) Press OPERATE/STOP button on the remote controller. OPERATION INDICATOR lamp of the indoor unit will turn on with a beep tone. (2) Press OPERATION SELECT button to set "I FEEL CONTROL"( ). Then a beep tone is heard. (3) The operation mode is determined by the initial room temperature at start-up of the operation. Initial room temperature more than 25: 23: to 25: less than 23: Mode COOL mode of "I FEEL CONTROL" DRY mode of "I FEEL CONTROL" HEAT mode of "I FEEL CONTROL"
q Once the mode is fixed, the mode will not change by room temperature afterwards. q Under the ON-TIMER ( ) operation, mode is determined according to the room temperature as the operation starts. q When the system is stopped with the OPERATE/STOP button 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. Example Previous operation COOL mode of "I FEEL CONTROL" or COOL mode Restart COOL mode of "I FEEL CONTROL"
INDOOR UNIT DISPLAY SECTION
q When the system is restarted after 2 hours, the operation mode is determined by the initial room temperature at start-up of the operation. Restart Example COOL or DRY or HEAT mode of "I FEEL Previous operation CONTROL" that deterCOOL mode of mined by initial room "I FEEL CONTROL" temperature at start-up of the operation. or COOL mode
33
(4) The initial set temperature is decided by the initial room temperature. Model COOL mode of "I FEEL CONTROL" Initial room temperature 26: or more 26: or less DRY mode of "I FEEL CONTROL" HEAT mode of "I FEEL CONTROL" 23: or 25: 23: or less Initial set temperature 24: g1 Initial room temperature minus 2: Initial room temperature minus 2: 26:
g1 After the system restarts by the remote controller, the system operates with the previous set temperature regardless of the initial set temperature. The set temperature is calculated by the previous set temperature. (5) TEMPERATURES buttons In "I FEEL CONTROL" ( ) mode, set temperature is decided by the microprocessor based on the room temperature. In addition, set temperature is controlled by TOO WARM or TOO COOL buttons when you feel too cool or too warm. Each time the TOO WARM or TOO COOL button is pressed,the indoor unit receives the signal and emits a beep tone. q Fuzzy control When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature, considering the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user's preference to heat or cool. So this is called "Fuzzy control", and works only in "I FEEL CONTROL" mode. In DRY mode of "I FEEL CONTROL", the set temperature doesn't change. v TOO COOL ... To raise the set temperature 1~2 degrees(°C)
w TOO WARM ... To lower the set temperature 1~2 degrees(°C)
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-- COOL mode of "I FEEL CONTROL" -- ON Compressor and outdoor fan motor OFF OFF ON
Indoor fan motor
ON
Run continuously in cooling mode
NOTE : Coil frost prevention during COOL mode of "I FEEL CONTROL" There are two types of controls in coil frost prevention. x Temperature control When the indoor coil thermistor RT12 reads 4°C or below for 5 minutes, the coil frost prevention mode starts. When the indoor coil thermistor RT12 reads 3°C or below, the coil frost prevention mode starts immediately. However the coil frost prevention will not work for 5 minutes after the compressor starts. The compressor stops and the indoor fan operates at the set speed for 5 minutes. After that, if RT12 still reads below 4°C (MSH-07/09/12) or below 3°C (MSH-18/24) this mode prolonged until the RT12 reads over 4°C (MSH-07/09/12) or 3°C (MSH-18/24). y Time control When the three conditions below have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes. a. Compressor has been continuously operating. b. Indoor fan speed is Lo or Me. c. Room temperature is below 26°C. When compressor stops, the accumulated time is cancelled and when compressor restarts, time counting starts from the beginning. Time counting also stops temporarily when the indoor fan speed becomes Hi or the room temperature exceeds 26°C.However, when two of the above conditions (b.and c.) are satisfied again.Time accumulation is resumed. qIndoor fan operates at the set speed by FAN SPEED CONTROL button. Followings are the fan speed in AUTO. Initial temperature difference Fan Speed Room temperature minus set temperature : 2 degrees or more ··············································Hi Room temperature minus set temperature : 1 degree or more and less than 2 degrees ·······Me 2 deg. 4 deg. Room temperature minus set temperature : less than 1 degree··············································Lo 1 deg. 1.66 deg.
--DRY mode of "I FEEL CONTROL"-- The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the temperature and the microprocessor. By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease. The operation of the compressor and indoor fan is as follows. 1. When the room temperature is 23°C or over: Compressor operates by temperature control and time control. x Set temperature is controlled to fall 2°C as initial set temperature. y When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF. When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON. Indoor fan and outdoor fan operate in the same cycle as the compressor. 2. When the room temperature is under 23°C. When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF. When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
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Operation time chart Example 1st ON OFF Thermostat
ON
ON Indoor fan ON Outdoor fan compressor OFF 8 min. OFF
ON OFF ON OFF 3 min.
ON
ON
1 min. 4 min.
NOTE q Coil frost prevention during DRY mode of "I FEEL CONTROL" The operation is as same as coil frost prevention during COOL mode of "I FEEL CONTROL". However the indoor fan speed becomes the set speed or Lo.
-- HEAT mode of "I FEEL CONTROL" -- 1. Indoor fan speed control (1) Followings are the fan speed in AUTO. Initial temperature difference Fan speed Set temperature minus room temperature: 2 degrees or more················································· Hi Set temperature minus room temperature: 1 degree or more and less than 2 degrees··········· Me 2 deg. 4 deg. Set temperature minus room temperature: less than 1 degree················································· Lo 1 deg. 1.66 deg. (2) Cold air prevention control The fan runs at set speed when the indoor coil thermistor RT12 temperature exceeds 22°C. The fan operates at VLo when the temperature is below 18°C. But the fan stops when the indoor fan operates at VLo and the temperature is 15°C or less. NOTE : At initial in hysteresis this control works. 18: 22: (3) New warm air control. When compressor starts in heating operation or after defrosting, the fan changes the speed due to the indoor coil thermistor RT12 temperature to blow out warm air. After releasing of cold air prevention, when the indoor coil temperature is 37°C or above, the fan speed shifts to the set speed, and when the fan speed is changed by the remote controller, the fan speed is the set speed. When the indoor coil temperature is less than 37°C, the fan speed is controlled by time as below.