Super Multi System - Toshiba

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38 Is 4-way valve coil connector connected? � Are connectors of TS, TE, Pd sensors connected? � Are resistance value characteristics of TS and TE sensors normal? Is there a problem on wiring of fixed-speed compressor? � Yes Yes Are the output voltage characteristics of Pd sensor normal? Yes � Yes 4-way valve error Troubleshooting Diagnostic procedure for check code Check code Operation cause [08] 1. 4-way valve operation error. 4-way valve reversal alarm 2. TS sensor/TE sensor error. 3. Pd sensor error. 4. Fixed-speed compressor Mg-SW operation error. Is 4-way valve cool normal? � � Yes � Reset power supply and perform trial heating operation. � No Does 4-way valve operate? � Yes No Is fixed-speed compressor activated? No No No No No Yes Yes � No � Does refrigerant bypass from discharge to suction on 4-way valve? Yes Does OL of Mg-SW operate? No � Does IOL of fixed-speed compressor operate? No No � � � � � � � � Yes � Yes � � Modify connector connection (4-way valve coil: CN 317) 4-way valve cool error Modify connection of connectors. TS sensor: PJ3 TE sensor: PJ4 Pd sensor: PJ7 Sensor error Sensor error Correct wiring Restart the operation if a trouble has not occurred in trial operation. Check 4-way valve Restart the operation after manual reset Restart the operation after compressor IOL reset (automatic reset) Mg-SW error
Troubleshooting Diagnostic procedure for check code Check code Operation cause [09] 1. Compressor running but not pumping. No temperature change in TC temperature 2. Bi-Metal thermostat protection device. 3. Compressor wiring. 4. Faulty TC temperature sensor. Is the power supply voltage to the outdoor unit normal? � Is the compressor running but not pumping? � Are the gas suction, gas discharge and liquid packed valves fully open? � Is the wiring of the compressor normal? � Yes Yes Yes Yes See judgement flow [1d] compressor fault No No No No � � � Modify power supply Open packed valves Modify connection of wiring � Is the indoor unit in frost conditions? Yes � Is the indoor TC sensor normal and connected correctly? Yes � Confirm: Lack of gas charge Pipe blockage No No � � See judgement flow [1d] compressor fault Replace TC sensor 39
Page 1: Super Multi System HFC R407C A90-02
Page 4 and 5: 4 Introduction Precautions Please r
Page 6 and 7: Components - 3 pipe system 1. Outdo
Page 8 and 9: 8 Introduction Super multi system b
Page 10 and 11: 10 Introduction Components Setting
Page 12 and 13: 12 Parts specification Outdoor unit
Page 14 and 15: 14 Parts specification Outdoor unit
Page 16 and 17: MAR-F105HTM8-PE Dimensional drawing
Page 18 and 19: MAR-F105HTM8-PE 18 Wiring diagrams
Page 20 and 21: 20 Wiring diagram Multi Controllers
Page 22 and 23: 22 Refrigeration piping schematic d
Page 24 and 25: 24 Refrigeration piping schematic d
Page 26 and 27: 26 Diagnostic procedure Outdoor uni
Page 28 and 29: 28 Diagnostic procedure Outdoor uni
Page 30 and 31: 9. Outdoor unit - pressure sensor d
Page 32 and 33: 32 Diagnostic procedure Multi Contr
Page 34 and 35: 34 Fault code display Self-diagnost
Page 36 and 37: 04 No communication signal between
Page 40 and 41: 40 Is drain pump connected? Does fl
Page 42 and 43: 42 Troubleshooting Diagnostic proce
Page 44 and 45: Check code Status of air conditione
Page 46 and 47: Check code Operation cause [21] 1.
Page 48 and 49: Check code Operation cause [E5] 1.
Page 54 and 55: Check code [A0] Operation cause Dis
Page 58 and 59: 58 C � Does heating indoor fan op
Page 64 and 65: 64 Control features Outdoor unit/Mu
Page 66 and 67: 66 Valve and sensor function and op
Page 68 and 69: 68 Valve and sensor function and op
Page 70 and 71: Leak position check 70 Refrigerant
Page 72 and 73: Additional refrigerant One Multi Co
Page 74 and 75: 74 Exploded view and service parts
Page 80: www.toshiba-aircon.co.uk MADE IN UK

Super Multi System - Toshiba

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