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Toyotomi CFT100A-R Service Manual Download Page 40

Troubleshooting

Electrical Control

45

2.

Troubleshooting

2.1 Display board

2.1.1 Icon explanation on indoor display board (Big cassette).

2.1.2 Icon explanation on indoor display board (Compact cassette & High static pressure Duct).

2.1.3 Icon explanation on indoor display board (Ceiling & Floor)

2.1.4 Icon explanation on indoor display board (A5 Duct)

OPERATION TIMER DEF./FAN

ALARM

Temporary button

Operation lamp

Timer indicator

Infrared signal receiver

Alarm indicator

PRE-DEF indicator(cooling and heating type)
or fan only indicator(cooling only type)

MANUAL

Display digital tube

Summary of Contents for CFT100A-R

Page 1: ...Service Manual MODEL CFT35A R CFT50A R CFT70A R CFT100A R CFT140A R CFT170A R ...

Page 2: ......

Page 3: ...tu h A B C D E F G 12000 24000 990 660 203 505 506 907 200 30000 36000 1280 660 203 795 506 1195 200 48000 60000 1670 680 240 1070 450 1542 200 Note The dimension of 12000Btu h 18000Btu h and 24000Btu h are the same The dimension of 30000Btu h and 36000Btu h are the same The dimension of 48000Btu h and 60000Btu h are the same ...

Page 4: ...Service Space 6 Ceiling Floor Type 3 Service Space ...

Page 5: ...Wiring Diagrams Ceiling Floor Type 7 4 Wiring Diagrams CFT 35A Ri CFT 50A Ri ...

Page 6: ...Wiring Diagrams 8 Ceiling Floor Type CFT 70A Ri ...

Page 7: ...Wiring Diagrams Ceiling Floor Type 9 CFT 100A Ri ...

Page 8: ...Wiring Diagrams 10 Ceiling Floor Type CFT 140A Ri CFT 170A Ri ...

Page 9: ...Air Velocity and Temperature Distributions Reference Data Ceiling Floor Type 11 5 Air Velocity and Temperature Distributions Reference Data Discharge angle 60 CEILING Airflow velocity Temperature ...

Page 10: ...Air Velocity and Temperature Distributions Reference Data 12 Ceiling Floor Type Discharge angle 60 FLOOR Temperature Airflow velocity ...

Page 11: ...r Units Power Supply Hz Voltage Min Max MFA CFT 35A Ri 50 220 240V 198V 254V 16 CFT 50A Ri 50 220 240V 198V 254V 16 CFT 70A Ri 50 220 240V 198V 254V 25 CFT 100A Ri 50 380 415V 342V 418V 20 CFT 140A Ri 50 380 420V 342V 440V 20 CFT 170A Ri 50 380 420V 342V 440V 20 Note MFA Max Fuse Amps A ...

Page 12: ...evels 14 Ceiling Floor Type 7 Sound Levels Ceiling Floor Model Noise level dB A H M L CFT 35A Ri 43 41 38 CFT 50A Ri 43 41 38 CFT 70A Ri 45 43 40 CFT 100A Ri 45 43 40 CFT 140A Ri 50 47 45 CFT 170A Ri 50 49 47 ...

Page 13: ...gs Name Shape Quantity 1 Hook 2 2 Hanging arm 2 Remote controller Its holder 3 Remote controller 1 4 Remote controller holder 1 5 Mounting screw ST2 9 10 C H 2 6 Alkaline dry batteries AM4 2 Others 7 Owner s manual 1 8 Installation manual 1 9 Remote controller manual 1 ...

Page 14: ...V 50Hz 220 240V 50Hz 220 240V 50Hz 380 415V 50Hz Circuit Breaker Fuse A 20 16 40 25 50 30 25 20 Indoor Unit Power Wiring mm 2 3 2 5 3 2 5 3 4 0 5 2 5 Indoor Outdoor Connecting Wiring mm 2 Ground Wiring 2 5 2 5 4 0 2 5 Outdoor Unit Power Wiring 3 2 5 3 2 5 3 4 0 5 2 5 Strong Electric Signal 2 1 0 3 1 5 3 1 0 3 1 0 Weak Electric Signal 2 core shield wire 2 0 75 mm 2 2 0 5 mm 2 2 core shield wire 2 0...

Page 15: ...Outdoor Units 20 Outdoor Units Outdoor Units 1 Dimensions 21 2 Service Space 23 3 Piping Diagrams 24 4 Wiring Diagrams 27 5 Electric Characteristics 31 6 Operation Limits 32 7 Sound Levels 33 ...

Page 16: ...s Outdoor Units 21 1 Dimensions mm Model A B C D E F H CFT 35A Ro 780 548 266 300 241 250 547 CFT 50A Ro 762 530 290 315 270 282 593 CFT 70A Ro 842 560 335 360 312 324 695 CFT 100A Ro 990 624 366 396 340 354 966 ...

Page 17: ...Dimensions 22 Outdoor Units mm Model A B C D E F H CFT 140A Ro 900 590 378 400 330 340 1167 CFT 170A Ro 900 590 378 400 330 340 1167 ...

Page 18: ...Service Space Outdoor Units 23 2 Service Space More than 60cm More than 30cm More than 60cm More than 200cm Air inlet Air inlet More than 30cm Air outlet Wall or obstacle Maintain channel ...

Page 19: ...T EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sensor ACCUMULATOR INDOOR OUTDOOR CHECK VALVE Heating Model only CAPILIARY TUBE For CFT 35A Ro CFT 50A Ro CFT 70A Ro the accumulator is not included ...

Page 20: ...PORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sensor ACCUMULATOR CFT 140A R INDOOR OUTDOOR T4 Ambient temp sensor CHECK VALVE Heating Model only CAPILIARY TUBE ...

Page 21: ...R HEAT EXCHANGE CONDENSER Compressor 2 WAY VALVE 3 WAY VALVE 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor T1 Room temp sensor T3 Condenser temp sensor Accumulator T4 Ambient temp sensor INDOOR OUTDOOR Oil return Capillary Oil separator CHECK VALVE Heating Model only CAPILIARY TUBE ...

Page 22: ...Wiring Diagrams Outdoor Units 27 4 Wiring Diagrams CFT 35A Ro ...

Page 23: ...Wiring Diagrams 28 Outdoor Units CFT 50A Ro CFT 70A Ro ...

Page 24: ...Wiring Diagrams Outdoor Units 29 CFT 100A Ro ...

Page 25: ...Wiring Diagrams CFT 140A Ro CFT 170A Ro 30 Outdoor Units ...

Page 26: ...Characteristics Model Outdoor Unit Hz Voltage Min Max CFT 35A Ro 50 220 240V 198V 254V CFT 50A Ro 50 220 240V 198V 254V CFT 70A Ro 50 220 240V 198V 254V CFT 100A Ro 50 380 420V 342V 440V CFT 140A Ro 50 380 420V 342V 440V CFT 170A Ro 50 380 420V 342V 440V ...

Page 27: ...mperature 18đЊ43đ 7đЊ24đ δ 7đЊ43đφFor the models with low temperature cooling systemε 10 15 25 30 35 20 15 20 25 30 35 40 45 Indoor temperature ć WB Outdoor temperature ć DB STD Cooling 43 17 32 10 5 0 5 10 18 7 With Low Ambient Cooling System 10 15 25 30 20 15 20 25 Indoor temperature ć WB Outdoor temperature ć DB Heating 10 5 0 5 10 24 7 0 5 STD ...

Page 28: ...48000Btu h 60000Btu h Microphone Outdoor Unit H 1 0m Note H 0 5 height of outdoor unit Note The point A is in the middle of the whole outdoor panel Model Noise level dB A CFT 35A Ro 43 CFT 50A Ro 54 CFT 70A Ro 55 CFT 100A Ro 57 CFT 140A Ro 59 CFT 170A Ro 59 ...

Page 29: ...Electrical Control 34 Electrical Control Electrical Control System 1 Electrical Control Function 35 2 Troubleshooting 45 3 Controller 䭏䈥 ᵠᇐѿҜㆴȾ ...

Page 30: ...ys closed If it is open the system will stop until the fault is cleared During defrosting procedure and 4 miQXWHV DIWHU GHIURVWLQJ HQGV ORZ SUHVVXUH VZLWFK ZRQ W EH FKHFNHG Note The system will not check if the protection could be cleared in 30 seconds after the protection occurs I WKLV SURWHFWLRQ RFFXUV WLPHV LW ZRQ W UHFRYHU DXWRPDWLFDOO XQWLO WKH PDLn power is cut off 1 2 5 Over current protect...

Page 31: ...ooling mode 5 Auto fan Big Cassette Compact Cassette Others type 27 T1 26 High Low 24 Medium 1 3 2 Cooling Mode 1 3 2 1 Outdoor fan running rules For 1 phase outdoor units The On off outdoor units have single fan speed The outdoor fan will run following the compressor except when AC is in evaporator high temp protection in heating mode condenser high temp protection in cooling mode defrosting mode...

Page 32: ... 1 3 2 2 Indoor fan running rules In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto The auto fan Big cassette Compact cassette Others type 4 T1 Ts 3 High Low 1 Medium T1 TS 4qC High 1qC Low T1 TS 3qC High 1qC Low ...

Page 33: ... temperature T3 protection T3 TE12 Off On TE13 KHQ 7 7 2 for Time1 the compressor will shut off When T3ψTE13 the compressor will restart 1 3 3 Heating Mode For heat pump models 1 3 3 1 Outdoor fan running rules For 1 phase outdoor units The On off outdoor units have single fan speed The outdoor fan will run following the compressor except when AC is in evaporator high temp protection in heating mo...

Page 34: ...the indoor fan will run at setting speed TE1 T2 TE2 the indoor fan will run at low speed When T2 is getting lower TE4 T2 TE3 the indoor fan will run at low speed T2 TE4 the indoor fan will shut off TE2 T2 TE1 Setting Off TE3 TE4 Low Only for DL If the compressor stops caused by the room temperature rising the indoor fan will follow the below rules During this period the anti cold wind is disabled ...

Page 35: ...T3ψ 2đ For A5 duct T3 0đ and the compressor keeps running over 45 minutes Meanwhile T3ψ 3đ for 3minutes B After the last defrosting the time that the outdoor fan is off but the compressor is on in high T2 protection cumulates up to 90 minutes z Condition of ending defrosting If any one of the following items is satisfied the defrosting will terminate and the machine will turn to normal heating mod...

Page 36: ...anwhile T3ψ 3đ for 3minutes z Condition of ending defrosting If any one of the following items is satisfied the defrosting will terminate and the machine will turn to normal heating mode A T3 rises to be higher than 20ć B The machine has run for 10 minutes in defrosting z Defrosting actionφ The compressor is running and 4 way valve and outdoor fan stop The indoor fan works as anti cold wind proced...

Page 37: ...ne switches mode between heating and cooling the compressor will keep stopping for 15 minutes and then choose mode according to T1 Ts If the setting temperature is modified the machine will choose running function again 1 3 5 Drying mode 1 3 5 1 The indoor fan will keep running at low speed 1 3 5 2 All protections are active and the same as that in cooling mode 1 3 5 3 The louver operates the same...

Page 38: ...s in sleep mode is as follow After pressing ECONOMIC or SLEEP button on the controller the machine will go into economy mode When cooling the setting temperature rises 1đ be lower than 30đ every hour 2 hours later the setting temperature stops rising For heat pump models when they are in heating the setting temperature reduces 1đ be higher than 17đ every hour 2 hours later the setting temperature ...

Page 39: ...minutes the drain pump will work as normal state if it is necessary to turn off the pump it will be off in 1 minute delay If the error is still there in 3 minutes the drain pump will be off as well as the AC unit The error can be cleared only when the power of the unit is cut off ...

Page 40: ...pact cassette High static pressure Duct 2 1 3 Icon explanation on indoor display board Ceiling Floor 2 1 4 Icon explanation on indoor display board A5 Duct OPERATION TIMER DEF FAN ALARM Temporary button Operation lamp Timer indicator Infrared signal receiver Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type MANUAL Display digital tube ...

Page 41: ...ull water malfunction Note X means off ƿ means flashes at 5Hz 2 For the other types indoor unit No Operation Timer Def Fan Alarm Information Remark 1 ƾ X X X Normal standby Nothing wrong with the unit when LED indicate these contents 2 X X X X Normal off 3 Ȗ X X X Normal running 4 ƿ X Ȗ X Forced cooling 5 X ƿ X X Indoor temperature sensor is abnormal Recover automatically after errors are eliminat...

Page 42: ...h Flash Off Trouble Overload of current Off Off Flash Trouble Communication malfunction Flash Off Flash Trouble Open circuit and short circuit trouble of T3 Off Flash Flash Trouble Open circuit and short circuit trouble of T4 Off Flash Off Trouble High temperature protection of condenser Flash Flash Flash Note 1 If the LED1 LED3 are flashing slowly means the system is stand by 2 T3 Outdoor condens...

Page 43: ...Is connection to connector of temp sensor good Check the resistance of the temp sensor according to Appendix 1 Repair connector No Yes Is it the resistance is normal Indoor PCB is defective Replace the sensor Yes No Is connection to connector of temp sensor good Check the resistance of the temp sensor according to Appendix 1 Repair connector No Yes Is it the resistance is normal Indoor PCB is defe...

Page 44: ...is broken Check PCB board or replace the main control board Replace the water level switch Yes No Check whether the water pump is normal Yes Insert the water level switch well No Yes Replace the water pump No EEPROM malfunction EEPROM chip is broken Check whether the main control chip is broken Replace the control chip Yes No Check PCB board or replace the main control board Replace EEPROM Yes No ...

Page 45: ...hase sequence error b Overload of current c Lack of phase Phase sequence error Change the order of two of the wires to power supply Switch on the unit again If the problem cannot be solved the outdoor PCB is defective Overload of current Check the current normally Is the current in rated range The outdoor PCB is defective Possible reason 1 Outdoor fan is defective 2 The compressor is defective 3 R...

Page 46: ... of pressure or temp Is it k1 or K2 open Is temp protective switch K1 open Possible reason 1 The wires is loose to K1 2 Air or other gas in the refrigerant 3 Heat exchanger is dirty 4 Outdoor fan or fan blade is defective 5 Outdoor unit is in bad ventilation 6 Refrigerant is leakage Is pressure protective switch K2 open Yes Yes Yes Possible reason 1 The wires is loose to K2 2 Air or other gas in t...

Page 47: ... is it normal Possible reason 1 Air or other gas in the refrigerant 2 Heat exchanger is dirty 3 Outdoor fan or fan blade is defective 4 Outdoor unit is bad ventilation 5 Refrigerant is leakage Replace the sensor No Yes Is connection to connector of temp sensor good Check the resistance of the temp sensor according to Appendix 1 Repair connector No Yes Is it the resistance is normal Indoor PCB is d...

Page 48: ...6 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 96392 81 1 13604 121 0 35042 2 31 5635 42 4 76253 82 1 09958 122 0 3413 3 29 9058 43 4 57050 83 1 06448 123 0 33246 4 28 3459 44 4 38736 84 1 03069 124 0 32390 5 26 8778 45 4 2...

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