Table of Contents
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SPLIT-TYPE,AIR CONDITIONERS
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MSC-C07TV -
MSC-C09TV -
MSC-C12TV -
MSC-C07TV -
MSC-C09TV -
MSC-C12TV -
MSC-C07TV -
E1
MSC-C09TV -
E1
MSC-C12TV -
E1
· MU-C07TV -
E1
( WH )
· MU-C09TV -
E1
( WH )
· MU-C12TV -
E1
( WH )
· MUH-C07TV -
E1
( WH )
· MUH-C09TV -
E1
( WH )
· MUH-C12TV -
E1
( WH )
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················5
3. SPECIFICATION·················································7
4. NOISE CRITERIA CURVES ·······························9
5. OUTLINES AND DIMENSIONS························11
6. WIRING DIAGRAM ··········································13
7. REFRIGERANT SYSTEM DIAGRAM ··············15
8. PERFORMANCE CURVES ······························18
9. MICROPROCESSOR CONTROL ····················35
10. SERVICE FUNCTIONS·····································45
11. TROUBLESHOOTING ······································48
12. DISASSEMBLY INSTRUCTIONS·····················59
13. PARTS LIST······················································65
No. OB269
HFC
utilized
R407C
E1
E1
E1
E1
E1
E1
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Table of Contents
Related Manuals for Mitsubishi Electric MSC-C07TV
Summary of Contents for Mitsubishi Electric MSC-C07TV
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Page 1: Table Of Contents
SPLIT-TYPE,AIR CONDITIONERS SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS No. OB269 utilized SERVICE MANUAL R407C Wireless type Models MSC-C07TV - · MU-C07TV - ( WH ) MSC-C09TV - · MU-C09TV - ( WH ) MSC-C12TV - · MU-C12TV - ( WH ) MSC-C07TV - ·... -
Page 2: Technical Changes
TECHNICAL CHANGES MSC-C07SV - MSC-C07TV - MSC-C09SV - MSC-C09TV - MSC-C12SV - MSC-C12TV - 1. Rated voltage has changed to 230V. 2. Remote controller has changed. • Slide switch for setting the type has added on the remote controller. Indoor units for MU type and MUH type are common specifications. - Page 3 INFORMATION FOR THE AIR CONDITIONER WITH R407C REFRIGERANT This room air conditioner adopts HFC refrigerant (R407C) which will never destroy the ozone layer. Pay attention to following points. 1 Take sufficient care not to allow water and other contaminations to enter the R407C refrigerant during storage and installation, since it is more susceptible to contaminations than HCFC (R22) refrigerant.
- Page 4 1.Tools dedicated for the air conditioner with R407C refrigerant The following tools are required for R407C refrigerant. Some R22 tools can be substituted for R407C tools. Do not use tools that are used with R22 refrigerant in order to avoid mixing oils. Description R407C tools Can R22 tools be used?
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Page 5: Part Names And Functions
PART NAMES AND FUNCTIONS INDOOR UNIT MSC-C07TV - MSC-C09TV - MSC-C12TV - Grille Deodorizing filter Air inlet (gray sponge type) Air cleaning filter (white bellows type) Remote control receiving section Front panel Horizontal vane Air filter Vertical vanes Remote controller... - Page 6 MSC-C07TV - MSC-C09TV - MSC-C12TV - Signal transmitting section Operation display section OPERATE /STOP (ON /OFF)button ON/OFF WARM COOL TEMPERATURE buttons Open the front lid. CLOCK ON/OFF WARM COOL FAN SPEED CONTROL button STOP I FEEL COOL OFF-TIMER button VANE...
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Page 7: Specification
SPECIFICATION Indoor model MSC-C07TV - MSC-C09TV - MSC-C12TV - Function Cooling Cooling Cooling Single phase Single phase Single phase Indoor unit power supply 230V,50Hz 230V,50Hz 230V,50Hz Air flow(High) K /h Capacity Power outlet Running current 0.17 0.17 0.19 Power input... - Page 8 Indoor model MSC-C07TV - MSC-C09TV - MSC-C12TV - Function Cooling Heating Cooling Heating Cooling Heating Single phase Single phase Single phase Indoor unit power supply 230V,50Hz 230V,50Hz 230V,50Hz Air flow(High) K /h Capacity Power outlet Running current 0.17 0.17 0.19...
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Page 9: Noise Criteria Curves
NOISE CRITERIA CURVES MSC-C07TV - MSC-C12TV - MSC-C09TV - SPL(dB(A)) LINE NOTCH SPL(dB(A)) LINE NOTCH High High Test conditions, Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Heating : Dry-bulb temperature 20:... - Page 10 MUH-C07TV - MUH-C12TV - SPL(dB(A)) LINE NOTCH SPL(dB(A)) LINE NOTCH High High Test conditions, Test conditions, Heating : Dry-bulb temperature 7: Wet-bulb temperature 6: Heating : Dry-bulb temperature 7: Wet-bulb temperature 6: NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE...
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Page 11: Outlines And Dimensions
OUTLINES AND DIMENSIONS Unit: mm MSC-C07TV - MSC-C09TV - Installation plate INDOOR UNIT Indoor unit 81.5 116.5 Wall hole [65 Installation plate Liquid line [6.35-0.5m Gas line [9.52-0.43m Air in Insulation [37 O.D [21 I.D Drain hose [16 (Connected part O.D) - Page 12 Unit: mm MU-C07TV - MUH-C07TV - MU-C09TV - MUH-C09TV - MU-C12TV - MUH-C12TV - REQUIRED SPACE OUTDOOR UNIT Outdoor unit Air in Air in Drainage 3holes [33 Airout Service panel Liquid refrigerant pipe joint Refrigerant pipe (flared) [6.35 Gas refrigerant pipe joint Refrigerant pipe (flared) [9.52 (MU-C07/C09TV )
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Page 13: Wiring Diagram
WIRING DIAGRAM MSC-C07TV - MSC-C09TV - MSC-C12TV - MODELS WIRING DIAGRAM INDOOR UNIT TO OUTDOOR UNIT TAB12 RT12 CONNECTING HIC1 CN201 RT11 MUH TYPE NR11 CN202 MU TYPE TRANS SR141 CN211 LD101T POWER ELECTRONIC CONTROL P.C. BOARD SUPPLY CORD ~/N 230V... -
Page 14: Mu-C07Tv - E1
MU-C07TV - MU-C09TV - MU-C12TV - MODELS WIRING DIAGRAM OUTDOOR UNIT FROM INDOOR UNIT CONNECTING DSAR CIRCUIT BREAKER NO COM POWER SUPPLY ~ /N 230V 50Hz GRN/YLW 2 BLK SYMBOL NAME SYMBOL NAME SYMBOL NAME FUSE(2A) TERMINAL BLOCK COMPRESSOR CAPACITOR TB1,TB2 COMPRESSOR(INNER PROTECTOR) CONTACTOR... -
Page 15: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM Unit:mm MU-C07TV - MSC-C07TV - MU-C09TV - MSC-C09TV - INDOOR UNIT Refrigerant pipe [9.52 OUTDOOR UNIT (Option) Stop valve (with heat insulator) (with service port) Indoor Indoor coil heat thermistor Outdoor exchanger RT12 heat Flared connection exchanger... - Page 16 Unit:mm MSC-C07TV - MUH-C07TV - MSC-C09TV - MUH-C09TV - INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [ 9.52 (Option) 4-way valve (with heat insulator) Muffler Indoor coil Defrost Indoor Stop valve thermistor thermistor Outdoor heat (with service RT12 RT61 heat exchanger...
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Page 17: High
MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Piping size O.D : mm Length of connecting pipe : m Model Max. length : m Liquid Indoor unit Outdoor unit MSC-C07TV - MU-C07TV - Gas 0.43 Gas 0 9.52 MSC-C09TV - 6.35 MU-C09TV - Liquid 0 Liquid 0.5... -
Page 18: Performance Curves
PERFORMANCE CURVES MUH-C07TV - MU-C07TV - MSC-C07TV - MUH-C09TV - MU-C09TV - MSC-C09TV - MUH-C12TV - MU-C12TV - MSC-C12TV - 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. -
Page 19: Mu-C07Tv - E1
10.4 11.4 10.4 19.5 24.9 28.6 23.0 26.4 18.0 16.5 21.1 24.2 15.0 19.2 22.0 17.2 13.5 19.8 15.3 12.0 17.6 10.5 13.4 15.4 11.5 13.2 NOTE:The above curves are for the heating operation without any frost. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under the same temperature/humidity condition. -
Page 20: Mu-C09Tv - E1
MU-C09TV - MU-C09TV - (kgf/F[Gage])(MPa[Gage]) 230V 230V 35 (:) 35 (:) 70(%) 70 (%) Ambient temperature(˚C) Ambient temperature(˚C) Ambient humidity(%) Ambient humidity(%) MU-C12TV - MU-C12TV - (kgf/F[Gage])(MPa[Gage]) 230V 230V 35 (:) 35 (:) 70(%) 70(%) Ambient temperature(˚C) Ambient temperature(˚C) Ambient humidity(%) Ambient humidity(%) (kgf/F[Gage])(MPa[Gage]) MUH-C07TV -... -
Page 21: Heat Operation
MUH-C12TV - MUH-C12TV - (kgf/F[Gage])(MPa[Gage]) 230V 230V 35 (:) 70(%) 70(%) Ambient temperature(˚C) Ambient temperature(˚C) Ambient humidity(%) Ambient humidity(%) HEAT operation Condition indoor:Dry bulb temperature 20.0°C Outdoor:Dry bulb temperature 7,15,20°C Wet bulb temperature 14.5°C Wet bulb temperature 6,12,14.5°C MUH-C09TV - MUH-C07TV - 230V 230V... -
Page 22: Mu-C07Tv - E1
PERFORMANCE DATA COOL operation MSC-C07TV - : MU-C07TV - CAPACITY: 2.25(KW) SHF: 0.75 INPUT: 730(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.64 1.51 0.57 2.53 1.44 0.57 2.43 1.39 0.57 2.34 1.33 0.57... -
Page 23: Mu-C07Tv - E1
PERFORMANCE DATA COOL operation MSC-C07TV - : MU-C07TV - CAPACITY: 2.25(KW) SHF: 0.75 INPUT: 730(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.21 1.26 0.57 2.03 1.15 0.57 1.95 1.11 0.57 1.87 1.06 0.57... -
Page 24: Mu-C09Tv - E1
PERFORMANCE DATA COOL operation MSC-C09TV - : MU-C09TV - CAPACITY: 2.50(KW) SHF: 0.73 INPUT: 830(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.94 1.62 0.55 2.81 1.55 0.55 2.70 1.49 0.55 2.60 1.43 0.55 3.06 1.32 0.43 2.94 1.26 0.43... -
Page 25: Mu-C09Tv - E1
PERFORMANCE DATA COOL operation MSC-C09TV - : MU-C09TV - CAPACITY: 2.50(KW) SHF: 0.73 INPUT: 830(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.35 0.55 2.25 1.24 0.55 2.16 1.19 0.55 2.08 1.14 0.55 2.58 1.11 0.43 2.40 1.03 0.43... - Page 26 PERFORMANCE DATA COOL operation MSC-C12TV - : MU-C12TV - CAPACITY: 3.55(KW) SHF: 0.69 INPUT: 1370(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.17 2.13 0.51 1096 3.99 2.04 0.51 1151 3.83 1.96 0.51 1206 3.69 1.88 0.51 1260 4.35 1.70 0.39 1151 4.17 1.63 0.39 1219 4.05 1.58 0.39 1247 3.91 1.52 0.39 1302 4.17 2.29 0.55 1096 3.99 2.20 0.55 1151 3.83 2.11 0.55 1206 3.69 2.03 0.55 1260 4.35 1.87 0.43 1151 4.17 1.79 0.43 1219 4.05 1.74 0.43 1247 3.91 1.68 0.43 1302...
- Page 27 PERFORMANCE DATA COOL operation MSC-C12TV - : MU-C12TV - CAPACITY: 3.55(KW) SHF: 0.69 INPUT: 1370(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.48 1.77 0.51 1343 3.20 1.63 0.51 1425 3.07 1.57 0.51 1452 2.95 1.50 0.51 1480 3.66 1.43 0.39 1397 3.41 1.33 0.39 1466 3.28 1.28 0.39 1507 3.16 1.23 0.39 1548 3.48 1.91 0.55 1343 3.20 1.76 0.55 1425 3.07 1.69 0.55 1452 2.95 1.62 0.55 1480 3.66 1.57 0.43 1397 3.41 1.47 0.43 1466 3.28 1.41 0.43 1507 3.16 1.36 0.43 1548...
- Page 28 PERFORMANCE DATA COOL operation MSC-C07TV - : MUH-C07TV - CAPACITY: 2.20(KW) SHF: 0.77 INPUT: 770(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.53 0.59 2.48 1.46 0.59 2.38 1.40 0.59 2.29 1.35 0.59...
- Page 29 PERFORMANCE DATA COOL operation MSC-C07TV - : MUH-C07TV - CAPACITY: 2.20(KW) SHF: 0.77 INPUT: 770(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.16 1.27 0.59 1.98 1.17 0.59 1.90 1.12 0.59 1.83 1.08 0.59...
- Page 30 PERFORMANCE DATA COOL operation MSC-C09TV - : MUH-C09TV - CAPACITY: 2.55(KW) SHF: 0.72 INPUT: 910(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.00 1.62 0.54 2.87 1.55 0.54 2.75 1.49 0.54 2.65 1.43 0.54 3.12 1.31 0.42 3.00 1.26 0.42...
- Page 31 PERFORMANCE DATA COOL operation MSC-C09TV - : MUH-C09TV - CAPACITY: 2.55(KW) SHF: 0.72 INPUT: 910(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.50 1.35 0.54 2.30 1.24 0.54 2.21 1.19 0.54 2.12 1.14 0.54 2.63 1.10 0.42 2.45 1.03 0.42...
- Page 32 PERFORMANCE DATA COOL operation MSC-C12TV - : MUH-C12TV - CAPACITY: 3.45(KW) SHF: 0.70 INPUT: 1280(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT 4.05 2.11 0.52 1024 3.88 2.02 0.52 1075 3.73 1.94 0.52 1126 3.59 1.87 0.52 1178 4.23 1.69 0.40 1075 4.05 1.62 0.40 1139 3.93 1.57 0.40 1165 3.80 1.52 0.40 1216 4.05 2.27 0.56 1024 3.88 2.17 0.56 1075 3.73 2.09 0.56 1126 3.59 2.01 0.56 1178 4.23 1.86 0.44 1075 4.05 1.78 0.44 1139 3.93 1.73 0.44 1165 3.80 1.67 0.44 1216...
- Page 33 PERFORMANCE DATA COOL operation MSC-C12TV - : MUH-C12TV - CAPACITY: 3.45(KW) SHF: 0.70 INPUT: 1280(W) OUTDOOR DB(:) INDOOR INDOOR DB(:) WB(:) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.38 1.76 0.52 1254 3.11 1.61 0.52 1331 2.98 1.55 0.52 1357 2.86 1.49 0.52 1382 3.55 1.42 0.40 1306 3.31 1.32 0.40 1370 3.19 1.28 0.40 1408 3.07 1.23 0.40 1446 3.38 1.89 0.56 1254 3.11 1.74 0.56 1331 2.98 1.67 0.56 1357 2.86 1.60 0.56 1382 3.55 1.56 0.44 1306 3.31 1.46 0.44 1370 3.19 1.40 0.44 1408 3.07 1.35 0.44 1446...
- Page 34 PERFORMANCE DATA HEAT operation MSC-C07TV - : MUH-C07TV - CAPACITY : 2.5(KW) INPUT : 710(W) OUTDOOR WB(:) INDOOR DB(:) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 1.58 1.90 2.23 2.55 2.88 3.18 3.50 1.50 1.80 2.13 2.43 2.75 3.05 3.36 1.35...
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Page 35: Microprocessor Control
MICROPROCESSOR CONTROL MUH-C07TV - MU-C07TV - MSC-C07TV - MUH-C09TV - MU-C09TV - MSC-C09TV - MUH-C12TV - MU-C12TV - MSC-C12TV - Once the operation mode are set, the same operation mode can be repeated by simply turning the OPERATE/STOP (ON/OFF) button ON. Indoor unit receives the signal with a beep tone. -
Page 36: Continuous
9-1. COOL ( ) OPERATION (1) Press OPERATE/STOP(ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with the OPERATION SELECT button. (3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button)to select the desired temperature. The setting range is 16 ~ 31°C 1. - Page 37 The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the room temperature. By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease. 1.
- Page 38 (2) Cold air prevention control 1 When the compressor is not operating, (1) if the temperature of indoor coil thermistor RT12 is 18°C or less, the fan stops. (2) if the temperature of indoor coil thermistor RT12 is more than 18°C, the fan operates at Very Low. 2 When the compressor is operating, (1) if the temperature of RT12 is 22°C or more, the fan operates at set speed.
- Page 39 3. 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) The compressor cumulative operation time exceeds 40 minutes without the defrosting operation working. b) RT61 reads - 4.6°C(MUH-C07TV)/ - 2.7°C(MUH-C09/C12TV) or less.
- Page 40 4. R.V. coil control Heating · · · · · ON Cooling · · · · · OFF Dry · · · · · · · · OFF NOTE : When operation starts, the 4-way valve reverses for 5 seconds right before start-up of the compressor. Operation time chart (HEAT) (COOL / DRY)
- Page 41 (4) The initial set temperature is decided by the initial room temperature. Initial room temperature Mode Initial set temperature MU type MUH type 26: or more 26: or more COOL mode of "I FEEL CONTROL" Initial room temperature 25: to 26: 25: to 26: minus 2: DRY mode of...
- Page 42 9-6. 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 feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (High,Med.,Low), the microprocessor controls SR141and adjusts fan motor electric current to make the current rotational frequency close to the target rotational frequency.
- Page 43 < > (8) Cold air prevention in HEAT operation MUH-C07/C09/C12TV When any of the following conditions occurs in HEAT operation, the horizontal vane angle changes to Angle 1 automat- ically to prevent cold air blowing on users. Compressor is not operating. Defrosting is performed.
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Page 44: Continuous
(4) Press HR. and MIN. button (TIME SET button) to set the timer. Time setting is 10-minute units. HR. and MIN. button will work when “ ” or “ ” mark is flashing. These marks disappear in 1 minute. After setting the ON timer, check that OPERATION INDICATOR lamp of the indoor unit lights. NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during TIMER operation, or the set time may deviate within the range of about 10 minutes. -
Page 45: Service Functions
SERVICE FUNCTIONS MUH-C07TV - MU-C07TV - MSC-C07TV - MUH-C09TV - MU-C09TV - MSC-C09TV - MUH-C12TV - MU-C12TV - MSC-C12TV - < > 10-1. COMPULSORY DEFROSTING MODE FOR SERVICE MUH-C07/C09/C12TV By short circuit of the connector JP607 and R853 on the outdoor deicer P.C. board, defrosting mode can be accom- plished regardless of the defrost interval restriction. - Page 46 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.
- Page 47 2. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized by the indoor electronic control P.C.board. The “AUTO RESTART FUNCTION” sets to work the moment power has restored after power failure. Then, the unit will restart automatically. However if the unit is operated in “I FEEL CONTROL”...
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Page 48: Troubleshooting
TROUBLESHOOTING MUH-C07TV - MSC-C07TV - MU-C07TV - MUH-C09TV - MU-C09TV - MSC-C09TV - MUH-C12TV - MSC-C12TV - MU-C12TV - 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. - Page 49 11-2. Instruction of troubleshooting Start Indoor unit Indoor unit OPERATION INDICATOR operates. doesn't receive lamp on the indoor unit is Outdoor unit the signal from flashing on and off. doesn't remote controller. operate. Outdoor unit Indoor unit Indoor unit doesn't Outdoor unit doesn't operate, operates, when...
- Page 50 1. troubleshooting check table flashing · Flashing of the OPERATION INDICATOR lamp (on the left-hand side) indicates possible abnormalities. · The OPERATION INDICATOR lamp (on the left-hand side) is lighting during normal operation. Operation Indicator Before taking measures, make sure that the symptom reappears, for accurate troubleshooting. Self check table Abnormal Indication...
- Page 51 2. Trouble criterion of main parts MSC-C07TV - MSC-C09TV - MSC-C12TV - Check method and criterion Figure Part name Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor(RT11) Abnormal Normal MSC-C07/C09/C12TV Indoor coil Open or...
- Page 52 MUH-C07TV - MU-C07TV - MUH-C09TV - MU-C09TV - MUH-C12TV - MU-C12TV - Part name Check method and criterion Figure Measure the resistance with a tester. Defrost (Part temperature –10°C ~ 40°C) thermistor(RT61) Normal Abnormal MUH-C07/C09/C12TV Open or <MUH- short-circuit C07/C09/C12TV> 5kΩ...
- Page 53 Check of indoor fan motor Indoor fan motor doesn’t operate. Turn OFF the power supply. Check connector CN211 visually. Is soldered point of the connector Are lead wires connected? correctly soldered? Reconnect the lead wires. Resolder it. Disconnect lead wires from connector CN211 on the indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.3 and then No.2 and No.3.
- Page 54 Check of indoor electronic control P.C. board The unit doesn’t operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. Check both “parts side” Turn OFF the power supply. and “pattern side” of Remove indoor fan motor connector CN211 and vane motor connector CN151 indoor electronic control from the indoor electronic control P.C.
- Page 55 <MUH-C07/C09/C12TV> Start Check the voltage to terminal block of Replace the DEICER Check the outdoor power supply, outdoor unit. Is there 230V AC to P.C. board. power supply cord and connection. terminal block between Check the compressor Is the switch(SW2-2) on the Check the DEICER P.C.
- Page 56 How to check mis-wiring and serial signal error Outdoor unit doesn’t operate. 1 Set the switch(SW2-2) on the indoor electronic control P.C. board to MU type, when the outdoor unit is MU type. If the setting is MUH type, the unit does not work. Start 2 Short circuit of JPG and JPS on the indoor electronic control P.C.
- Page 57 TEST POINT DIAGRAM AND VOLTAGE MSC-C07TV - MSC-C09TV - MSC-C12TV - Indoor electronic control P.C. board Varistor (NR11) Fuse 250V AC 3.15A Indoor fan motor 230V AC R132 Power supply input 230V AC Room temperature 12V DC thermistor (RT11) Timer short mode point (JPG, JPS) (Refer to page 45.)
- Page 58 MUH-C07TV - MUH-C09TV - MUH-C12TV - Outdoor deicer P.C. board R601 5~10V DC Power supply input Outdoor fan motor R.V.coil 230V AC 230V AC CN730 230V AC Defrost thermistor(RT61) Fuse 2A/250V Defrost interval time short pin (JP607, R853) (Refer to page 45.) 5V DC 12V DC Jumper wire for change in...
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Page 59: Disassembly Instructions
1Hold the sleeve, and 2Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector 12-1. MSC-C07TV - MSC-C09TV - MSC-C12TV - INDOOR UNIT OPERATING PROCEDURE PHOTOS Photo 1 1. Removing the front panel Front panel (1) Remove the screw caps of the front panel. - Page 60 OPERATING PROCEDURE PHOTOS 3. Removing the electrical box Photo 3 (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.
- Page 61 12-2. MU-C07TV - MU-C09TV - MU-C12TV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws of the top panel. Screws of the front panel and motor support (2) Remove the screw of the service panel. (3) Remove the screws of the cabinet.
- Page 62 OPERATING PROCEDURE PHOTOS Photo 5 3. Removing the propeller fan and the outdoor fan motor Lead clamps (1) Remove the cabinet. (Refer to 1) Set screws of the (2) Remove the propeller fan nut. Outdoor outdoor fan motor Hook (3) Remove the propeller fan. fan motor NOTE : Loose the propeller fan in the rotating direction for connector...
- Page 63 12-3. MUH-C07TV - MUH-C09TV - MUH-C12TV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws of the top panel. Screws of the front panel and motor support (2) Remove the screws of the service panel. (3) Remove the screws of the cabinet.
- Page 64 OPERATING PROCEDURE PHOTOS Photo 5 3. Removing the propeller fan and the outdoor fan motor Lead clamps Set screws of the (1) Remove the cabinet. (Refer to 1) outdoor fan motor (2) Remove the propeller fan nut. Outdoor Hook (3) Remove the propeller fan. fan motor Propeller fan NOTE : Loose the propeller fan in the rotating direction for...
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Page 65: Parts List
PARTS LIST MSC-C07TV - (WH) MSC-C09TV - (WH) MSC-C12TV - (WH) 13-2. REMOTE CONTROLLER 13-1. INDOOR UNIT STRUCTURAL PARTS AND ACCESSORY PART 2 (W) (See page 71.) (See page 71.) 8 (W) (W)These figures show about MSC-C12TV. 13-1. INDOOR UNIT STRUCTURAL PARTS... - Page 66 MSC-C07TV - (WH) MSC-C09TV - (WH) MSC-C12TV - (WH) 13-4. INDOOR UNIT HEAT EXCHANGER 13-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 19 (W) SLEEVE BEARING ROOM TEMPERATURE THERMISTOR FUSE (W)These figures show about MSC-C12TV. VARISTOR 13-3. INDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS...
- Page 67 13-5. OUTDOOR UNIT STRUCTURAL PARTS MU-C07TV - MU-C09TV - MU-C12TV - Part number that is circled is not shown in the illustration. Q'ty/unit Symbol in Wiring Remarks Part name Part No. MU-C07TV- MU-C12TV- MU-C09TV- Diagram E02 336 297 TOP PANEL E02 336 630 OUTDOOR HEAT EXCHANGER E02 336 232...
- Page 68 MU-C07TV - MU-C09TV - MU-C12TV - 13-6. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol Part No. in Wiring Part name Remarks MU-C07TV- MU-C12TV- MU-C09TV- Diagram E02 336 501 PROPELLER FAN E02 437 301 OUTDOOR FAN MOTOR...
- Page 69 13-7. OUTDOOR UNIT STRUCTURAL PARTS MUH-C07TV - MUH-C09TV - MUH-C12TV - These figures show about MUH-C09/C12TV. Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Remarks Part name Part No. MUH-C07TV- MUH-C12TV- MUH-C09TV- Diagram E02 336 297 TOP PANEL E02 440 630...
- Page 70 MUH-C07TV - MUH-C09TV - MUH-C12TV - 13-9. ACCESSORY PARTS 13-8. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 13-8. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol Part No. in Wiring Remarks Part name...
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Page 71: Deodorizing Filter
Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet. DO NOT reuse AIR CLEANING FILTER even if it is washed. DO NOT remove or attach AIR CLEANING FILTER during unit operation. Model Part No. MSC-C07TV- MSC-C09TV- MAC-1300FT MSC-C12TV- 13-11. DEODORIZING FILTER DEODORIZING FILTER removes ammonia and hydrogen sulphide emitted from tobacco, and odor of pets. - Page 72 HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD. New publication, effective Dec. 2000 Issued in Dec. 2000. No.OB269 223 Specifications subject to change without notice. Made in Japan...