Durham Region Air Conditioning Repair, Service and Installation
If you're looking for help fixing your daikin air conditioner, look no further! Our comprehensive daikin air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.
CODE: A0.
RESULT: External protection device activated. External protection device connected to the terminal strip T1-T2 of indoor unit is activated.
RESULT: External protection device activated. External protection device connected to the terminal strip T1-T2 of indoor unit is activated.
CODE: A1.
RESULT: Malfunction of indoor unit PCB Malfunction due to noise Defect of indoor unit PCB.
RESULT: Malfunction of indoor unit PCB Malfunction due to noise Defect of indoor unit PCB.
CODE: A3.
RESULT: Malfunction of drain level control system Drain piping clogging, improper drain piping work Defect of drain pump. Defect of float switch.
RESULT: Malfunction of drain level control system Drain piping clogging, improper drain piping work Defect of drain pump. Defect of float switch.
CODE: A4.
RESULT: Malfunction of freezing protection Shortage of water volume Low water temperature setting Defect of 26WL. Defect of water temperature thermistor.
RESULT: Malfunction of freezing protection Shortage of water volume Low water temperature setting Defect of 26WL. Defect of water temperature thermistor.
CODE: A5.
RESULT: High pressure control in heating, freeze-up protection control in cooling Clogged air filter of indoor unit and short-circuit Defect of indoor unit heat exchanger thermistor.
RESULT: High pressure control in heating, freeze-up protection control in cooling Clogged air filter of indoor unit and short-circuit Defect of indoor unit heat exchanger thermistor.
CODE: A6.
RESULT: Fan motor locked, overload, overcurrent Defect of connector contact Defect of indoor unit PCB Defect of fan motor.
RESULT: Fan motor locked, overload, overcurrent Defect of connector contact Defect of indoor unit PCB Defect of fan motor.
CODE: A7.
RESULT: Malfunction of swing flap motor Failure of swing flap motorm, Defect of indoor unit PCB Jammed swing mechanism/blade.
RESULT: Malfunction of swing flap motor Failure of swing flap motorm, Defect of indoor unit PCB Jammed swing mechanism/blade.
CODE: A8.
RESULT: Malfunction of power supply Overcurrent of AC input, Defect of power supply voltage.
RESULT: Malfunction of power supply Overcurrent of AC input, Defect of power supply voltage.
CODE: A9.
RESULT: Malfunction of electronic expansion valve drive Defect of electronic expansion valve coil, Defect of indoor unit PCB, Defect of connector contact.
RESULT: Malfunction of electronic expansion valve drive Defect of electronic expansion valve coil, Defect of indoor unit PCB, Defect of connector contact.
CODE: AA.
RESULT: Heater overheat 26WH is activated.
RESULT: Heater overheat 26WH is activated.
CODE: AF.
RESULT: Malfunction of a humidifier system Water leakage of humidifier (option), Failure of swing float switch. Improper drain piping incline.
RESULT: Malfunction of a humidifier system Water leakage of humidifier (option), Failure of swing float switch. Improper drain piping incline.
CODE: AH.
RESULT: Malfunction of dust collector of air cleaner Defect of dust collecting element Defect of high voltage power supply unit Stained insulator part Defect of indoor unit PCB.
RESULT: Malfunction of dust collector of air cleaner Defect of dust collecting element Defect of high voltage power supply unit Stained insulator part Defect of indoor unit PCB.
CODE: AJ.
RESULT: Malfunction of capacity setting (Indoor unit PCB) Capacity setting adaptor is not installed when replacing PCB Defect of indoor unit PCB.
RESULT: Malfunction of capacity setting (Indoor unit PCB) Capacity setting adaptor is not installed when replacing PCB Defect of indoor unit PCB.
CODE: C1.
RESULT: Failure of transmission (between indoor unit PCB and fan PCB) Defect of transmission of fan motor control driver.
RESULT: Failure of transmission (between indoor unit PCB and fan PCB) Defect of transmission of fan motor control driver.
CODE: C4.
RESULT: Malfunction of liquid pipe thermistor for heat exchanger Defect of connector contact. Defect of liquid pipe thermistor for heat exchanger.
RESULT: Malfunction of liquid pipe thermistor for heat exchanger Defect of connector contact. Defect of liquid pipe thermistor for heat exchanger.
CODE: C5.
RESULT: Malfunction of gas pipe thermistor for heat exchanger Defect of connector contact. Defect of gas pipe thermistor for heat exchanger.
RESULT: Malfunction of gas pipe thermistor for heat exchanger Defect of connector contact. Defect of gas pipe thermistor for heat exchanger.
CODE: C6.
RESULT: Malfunction of fan motor control driver Defect of fan motor sensor system Defect of fan motor control driver.
RESULT: Malfunction of fan motor control driver Defect of fan motor sensor system Defect of fan motor control driver.
CODE: C7.
RESULT: Front panel driving motor fault Defect of front panel driving motor Defect of limit switch.
RESULT: Front panel driving motor fault Defect of front panel driving motor Defect of limit switch.
CODE: C9.
RESULT: Malfunction of suction air thermistor Defect of connector contact Defect of thermistor for suction air.
RESULT: Malfunction of suction air thermistor Defect of connector contact Defect of thermistor for suction air.
CODE: CA.
RESULT: Malfunction of discharge air thermistor Defect of connector contact. Defect of thermistor for discharge air.
RESULT: Malfunction of discharge air thermistor Defect of connector contact. Defect of thermistor for discharge air.
CODE: CC.
RESULT: Malfunction of humidity sensor system Defect of connector contact Defect of humidity sensor.
RESULT: Malfunction of humidity sensor system Defect of connector contact Defect of humidity sensor.
CODE: CJ.
RESULT: Malfunction of thermostat sensor in remote controller Defect of remote controller thermistor Malfunction due to noise Defect of remote controller PCB. Outdoor Unit.
RESULT: Malfunction of thermostat sensor in remote controller Defect of remote controller thermistor Malfunction due to noise Defect of remote controller PCB. Outdoor Unit.
CODE: E0.
RESULT: Protection devices actuated (unified) Protection device connected to outdoor PCB actuated Defect of protection device connector contact.
RESULT: Protection devices actuated (unified) Protection device connected to outdoor PCB actuated Defect of protection device connector contact.
CODE: E1.
RESULT: Defect of outdoor unit PCB Malfunction due to noise Defect of outdoor unit PCB?.
RESULT: Defect of outdoor unit PCB Malfunction due to noise Defect of outdoor unit PCB?.
CODE: E3.
RESULT: Actuation of high pressure switch (HPS) Dirty outdoor unit heat exchanger and suction filter Defect of HPS Clogged refrigerant piping Defect of connector contact.
RESULT: Actuation of high pressure switch (HPS) Dirty outdoor unit heat exchanger and suction filter Defect of HPS Clogged refrigerant piping Defect of connector contact.
CODE: E3.
RESULT: System No.1. Actuation of high pressure switch (HPS). Dirty outdoor unit heat exchanger Clogged refrigerant piping Defect of HPS Shortage of water volume Defect of connector contact Outdoor Unit.
RESULT: System No.1. Actuation of high pressure switch (HPS). Dirty outdoor unit heat exchanger Clogged refrigerant piping Defect of HPS Shortage of water volume Defect of connector contact Outdoor Unit.
CODE: E4.
RESULT: Actuation of low pressure switch (LPS) Clogged refrigerant piping Shortage of gas. Defect of connecting connector Defect of outdoor unit PCB.
RESULT: Actuation of low pressure switch (LPS) Clogged refrigerant piping Shortage of gas. Defect of connecting connector Defect of outdoor unit PCB.
CODE: E5.
RESULT: Overheat of inverter compressor motor Shortage of refrigerant amount Defect of connector contact Leakage of four way valve.
RESULT: Overheat of inverter compressor motor Shortage of refrigerant amount Defect of connector contact Leakage of four way valve.
CODE: E5.
RESULT: Inverter compressor motor lock Inverter compressor lock Incorrect wiring.
RESULT: Inverter compressor motor lock Inverter compressor lock Incorrect wiring.
CODE: E6.
RESULT: STD compressor motor overcurrent/lock Closed stop valve STD compressor lock.
RESULT: STD compressor motor overcurrent/lock Closed stop valve STD compressor lock.
CODE: E6.
RESULT: System No.1 Compressor overcurrent Defect of EXP. valve Defect of compressor Shortage of refrigerant amount.
RESULT: System No.1 Compressor overcurrent Defect of EXP. valve Defect of compressor Shortage of refrigerant amount.
CODE: E7.
RESULT: Malfunction of outdoor unit fan motor. Faulty contact of fan motor connector. Defect of fan motor, Defect of fan motor driver.
RESULT: Malfunction of outdoor unit fan motor. Faulty contact of fan motor connector. Defect of fan motor, Defect of fan motor driver.
CODE: E8.
RESULT: Overcurrent of inverter compressor, Defect of compressor, Defect of outdoor unit PCB Defect of inverter main circuit capacitor Defect of power transistor.
RESULT: Overcurrent of inverter compressor, Defect of compressor, Defect of outdoor unit PCB Defect of inverter main circuit capacitor Defect of power transistor.
CODE: E9.
RESULT: Malfunction of electronic expansion valve coil Defect of electronic expansion valve Defect of connector contact Defect of outdoor unit PCB.
RESULT: Malfunction of electronic expansion valve coil Defect of electronic expansion valve Defect of connector contact Defect of outdoor unit PCB.
CODE: EA.
RESULT: Malfunction of four way valve Defect of four way valve Defect of outdoor unit PCB Shortage of gas Defect of thermistor.
RESULT: Malfunction of four way valve Defect of four way valve Defect of outdoor unit PCB Shortage of gas Defect of thermistor.
CODE: EC.
RESULT: Malfunction of entering water temperature Malfunction of cooling water temperature. Defect of thermistor. Defect of outdoor unit PCB.
RESULT: Malfunction of entering water temperature Malfunction of cooling water temperature. Defect of thermistor. Defect of outdoor unit PCB.
CODE: EF.
RESULT: Malfunction of thermal storage unit Defect of electronic expansion valve of thermal storage unit Defect of thermal storage PCB.
RESULT: Malfunction of thermal storage unit Defect of electronic expansion valve of thermal storage unit Defect of thermal storage PCB.
CODE: F3.
RESULT: Malfunction of discharge pipe temperature Shortage of gas. Defect of connector contact. Clogged refrigerant piping Defect fo discharge pipe thermistor.
RESULT: Malfunction of discharge pipe temperature Shortage of gas. Defect of connector contact. Clogged refrigerant piping Defect fo discharge pipe thermistor.
CODE: F6.
RESULT: Abnormal high pressure in cooling Defect of outdoor unit fan motor Defect of electronic expansion valve Defect of heat exchanger thermistor, Defect of outdoor unit PCB.
RESULT: Abnormal high pressure in cooling Defect of outdoor unit fan motor Defect of electronic expansion valve Defect of heat exchanger thermistor, Defect of outdoor unit PCB.
CODE: F6.
RESULT: Refrigerant overcharged Refrigerant overcharged Disconnection of heat exchanger thermistor Disconnection of outdoor air thermistor Disconnection of liquid pipe thermistor.
RESULT: Refrigerant overcharged Refrigerant overcharged Disconnection of heat exchanger thermistor Disconnection of outdoor air thermistor Disconnection of liquid pipe thermistor.
CODE: H0.
RESULT: Malfunction of sensor system of compressor, Harness is disconnected, or defective connection Defect of PCB.
RESULT: Malfunction of sensor system of compressor, Harness is disconnected, or defective connection Defect of PCB.
CODE: H1.
RESULT: Malfunction of humidifier unit damper, Defect of limit switch Defect of damper.
RESULT: Malfunction of humidifier unit damper, Defect of limit switch Defect of damper.
CODE: H3.
RESULT: Malfunction of high pressure switch (HPS), Defect of high pressure switch. Broken wire. Defect of connector contact, Defect of outdoor unit PCB.
RESULT: Malfunction of high pressure switch (HPS), Defect of high pressure switch. Broken wire. Defect of connector contact, Defect of outdoor unit PCB.
CODE: H4.
RESULT: Malfunction of low pressure switch (LPS), Defect of low pressure switch Broken wire. Defect of connector contact, Defect of outdoor unit PCB.
RESULT: Malfunction of low pressure switch (LPS), Defect of low pressure switch Broken wire. Defect of connector contact, Defect of outdoor unit PCB.
CODE: H5.
RESULT: Malfunction of compressor motor overload thermistor Defect of connector contact. Defect of compressor motor overload thermistor.
RESULT: Malfunction of compressor motor overload thermistor Defect of connector contact. Defect of compressor motor overload thermistor.
CODE: H6.
RESULT: Malfunction of position detection sensor, Faulty contact of compress or cable. Defect of compressor, Defect of outdoor unit PCB.
RESULT: Malfunction of position detection sensor, Faulty contact of compress or cable. Defect of compressor, Defect of outdoor unit PCB.
CODE: H7.
RESULT: Malfunction of outdoor fan motor signal Faulty contact of fan wiring Defect of fan motor driver Defect of fan motor.
RESULT: Malfunction of outdoor fan motor signal Faulty contact of fan wiring Defect of fan motor driver Defect of fan motor.
CODE: H8.
RESULT: Malfunction of compressor input (CT) system Defect of power transistor. Defect of reactor. Faulty wiring of inverter system Defect of outdoor unit PCB.
RESULT: Malfunction of compressor input (CT) system Defect of power transistor. Defect of reactor. Faulty wiring of inverter system Defect of outdoor unit PCB.
CODE: H9.
RESULT: Malfunction of outdoor air thermistor. Defect of connector contact Defect of thermistor for outdoor air.
RESULT: Malfunction of outdoor air thermistor. Defect of connector contact Defect of thermistor for outdoor air.
CODE: HC.
RESULT: Malfunction of (hot) water temperature thermistor Defect of connector contact Defect of outdoor unit PCB Defect of thermistor for water temperature.
RESULT: Malfunction of (hot) water temperature thermistor Defect of connector contact Defect of outdoor unit PCB Defect of thermistor for water temperature.
CODE: HF.
RESULT: Alarm in thermal storage unit with ice Thermal storage group defective wiring Defect of setting Excess of thermal storage tank numbers.
RESULT: Alarm in thermal storage unit with ice Thermal storage group defective wiring Defect of setting Excess of thermal storage tank numbers.
CODE: HJ.
RESULT: Malfunction of thermal storage tank water level Low water level Defect of switch setting Water level detecting sensor failure Defect of connector contact Outdoor Unit.
RESULT: Malfunction of thermal storage tank water level Low water level Defect of switch setting Water level detecting sensor failure Defect of connector contact Outdoor Unit.
CODE: J1.
RESULT: Malfunction of pressure sensor Defect of pressure sensor connector contact. Defect of pressure sensor. Defect of outdoor unit PCB.
RESULT: Malfunction of pressure sensor Defect of pressure sensor connector contact. Defect of pressure sensor. Defect of outdoor unit PCB.
CODE: J2.
RESULT: Malfunction of current sensor of compressor Defect of current sensor Defect of outdoor unit PCB Defect of compressor.
RESULT: Malfunction of current sensor of compressor Defect of current sensor Defect of outdoor unit PCB Defect of compressor.
CODE: J3.
RESULT: Malfunction of discharge pipe thermistor. Defect of connector contact Defect of outdoor unit PCB Defect of discharge pipe thermistor.
RESULT: Malfunction of discharge pipe thermistor. Defect of connector contact Defect of outdoor unit PCB Defect of discharge pipe thermistor.
CODE: J4.
RESULT: Malfunction of low pressure equivalent saturated temperature sensor system Defect of connector contact Defect of thermistor Defect of outdoor unit PCB (Multi-split, Super-multi ).
RESULT: Malfunction of low pressure equivalent saturated temperature sensor system Defect of connector contact Defect of thermistor Defect of outdoor unit PCB (Multi-split, Super-multi ).
CODE: J5.
RESULT: Malfunction of suction pipe thermistor Defect of connector contact Defect of outdoor unit PCB Defect of suction pipe thermistor.
RESULT: Malfunction of suction pipe thermistor Defect of connector contact Defect of outdoor unit PCB Defect of suction pipe thermistor.
CODE: J6.
RESULT: Malfunction of heat exchanger thermistor Defect of connector contact Defect of outdoor unit PCB Defect of heat exchanger thermistor.
RESULT: Malfunction of heat exchanger thermistor Defect of connector contact Defect of outdoor unit PCB Defect of heat exchanger thermistor.
CODE: J7.
RESULT: Malfunction of liquid pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of liquid pipe thermistor.
RESULT: Malfunction of liquid pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of liquid pipe thermistor.
CODE: J8.
RESULT: Malfunction of liquid pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of liquid pipe thermistor.
RESULT: Malfunction of liquid pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of liquid pipe thermistor.
CODE: J9.
RESULT: Malfunction of gas pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of gas pipe thermistor.
RESULT: Malfunction of gas pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of gas pipe thermistor.
CODE: JA.
RESULT: Malfunction of high pressure sensor Defect of connector contact Defect of outdoor unit PCB Defect of high pressure sensor.
RESULT: Malfunction of high pressure sensor Defect of connector contact Defect of outdoor unit PCB Defect of high pressure sensor.
CODE: JC.
RESULT: Malfunction of low pressure sensor Defect of connector contact Defect of outdoor unit PCB Defect of low pressure sensor.
RESULT: Malfunction of low pressure sensor Defect of connector contact Defect of outdoor unit PCB Defect of low pressure sensor.
CODE: JE.
RESULT: Malfunction of sub-tank thermistor Defect of connector contact Defect of outdoor unit PCB Defect of sub-tank thermistor.
RESULT: Malfunction of sub-tank thermistor Defect of connector contact Defect of outdoor unit PCB Defect of sub-tank thermistor.
CODE: JF.
RESULT: Malfunction of heating thermistor for heat exchanger Defect of connector contact Defect of outdoor unit PCB Defect of heat exchanger thermistor.
RESULT: Malfunction of heating thermistor for heat exchanger Defect of connector contact Defect of outdoor unit PCB Defect of heat exchanger thermistor.
CODE: JH.
RESULT: Malfunction of oil temperature thermistor Defect of connector contact Defect of outdoor unit PCB Defect of oil temperature thermistor.
RESULT: Malfunction of oil temperature thermistor Defect of connector contact Defect of outdoor unit PCB Defect of oil temperature thermistor.
CODE: L0.
RESULT: Malfunction of inverter system Shortage of power supply capacity Defect of inverter PCB Defect of power transistor.
RESULT: Malfunction of inverter system Shortage of power supply capacity Defect of inverter PCB Defect of power transistor.
CODE: L1.
RESULT: Malfunction of inverter PCB Defect of compressor wiring Blown fuse Defect of outdoor unit fan motor Defect of inverter PCB.
RESULT: Malfunction of inverter PCB Defect of compressor wiring Blown fuse Defect of outdoor unit fan motor Defect of inverter PCB.
CODE: L3.
RESULT: Electrical box temperature rise Fin temperature rise due to short-circuit Defect of power transistor Defect of outdoor unit fan Defect of outdoor unit PCB.
RESULT: Electrical box temperature rise Fin temperature rise due to short-circuit Defect of power transistor Defect of outdoor unit fan Defect of outdoor unit PCB.
CODE: L4.
RESULT: Malfunction of inverter radiating fin temperature rise Fin temperature rise due to short-circuit Defect of fin thermistor.
RESULT: Malfunction of inverter radiating fin temperature rise Fin temperature rise due to short-circuit Defect of fin thermistor.
CODE: L5.
RESULT: Inverter instantaneous overcurrent (DC) Closed stop valve Defect of compressor.
RESULT: Inverter instantaneous overcurrent (DC) Closed stop valve Defect of compressor.
CODE: L6.
RESULT: Inverter instantaneous overcurrent (AC) Overcharge of refrigerant amount Defect of compressor Shortage of power supply capacity Defect of inverter unit.
RESULT: Inverter instantaneous overcurrent (AC) Overcharge of refrigerant amount Defect of compressor Shortage of power supply capacity Defect of inverter unit.
CODE: L8.
RESULT: Overcurrent of inverter compressor Abnormal high pressure rise due to clogged refrigerant circuit and others Defect of compressor.
RESULT: Overcurrent of inverter compressor Abnormal high pressure rise due to clogged refrigerant circuit and others Defect of compressor.
CODE: L9.
RESULT: Malfunction of inverter compressor startup Faulty of pressure equalization Defect of compressor wiring Defect of compressor.
RESULT: Malfunction of inverter compressor startup Faulty of pressure equalization Defect of compressor wiring Defect of compressor.
CODE: LA.
RESULT: Malfunction of power transistor Defect of power transistor Defect of inverter PCB Defect of compressor.
RESULT: Malfunction of power transistor Defect of power transistor Defect of inverter PCB Defect of compressor.
CODE: LC.
RESULT: Malfunction of transmission between outdoor unit PCB and micro-computer Defect of grounding connection Defect of outdoor unit PCB Malfunction due to noise.
RESULT: Malfunction of transmission between outdoor unit PCB and micro-computer Defect of grounding connection Defect of outdoor unit PCB Malfunction due to noise.
CODE: LC.
RESULT: Malfunction of transmission between control and inverter PCB Defect of connector contact Defect of inverter PCB Malfunction due to noise Defect of outdoor unit control PCB.
RESULT: Malfunction of transmission between control and inverter PCB Defect of connector contact Defect of inverter PCB Malfunction due to noise Defect of outdoor unit control PCB.
CODE: P0.
RESULT: Shortage of refrigerant amount (thermal storage unit) Shortage of refrigerant Clogged refrigerant piping Outdoor Unit.
RESULT: Shortage of refrigerant amount (thermal storage unit) Shortage of refrigerant Clogged refrigerant piping Outdoor Unit.
CODE: P1.
RESULT: Power voltage imbalance, open phase Open phase Voltage imbalance between phases Faulty main circuit capacitor. Defect of wiring contact.
RESULT: Power voltage imbalance, open phase Open phase Voltage imbalance between phases Faulty main circuit capacitor. Defect of wiring contact.
CODE: P2.
RESULT: Automatic refrigerant charge operation stop Closed stop valve. Closed valve of refrigerant tank.
RESULT: Automatic refrigerant charge operation stop Closed stop valve. Closed valve of refrigerant tank.
CODE: P3.
RESULT: Malfunction of thermistor in electrical box Electrical box temperature rise (ambient temperature rise) Defect of fin thermistor, Defect of outdoor unit PCB.
RESULT: Malfunction of thermistor in electrical box Electrical box temperature rise (ambient temperature rise) Defect of fin thermistor, Defect of outdoor unit PCB.
CODE: P4.
RESULT: Malfunction of radiating fin temperature sensor Defect of radiating fin thermistor Defect of wiring contact Defect of outdoor unit PCB.
RESULT: Malfunction of radiating fin temperature sensor Defect of radiating fin thermistor Defect of wiring contact Defect of outdoor unit PCB.
CODE: P8.
RESULT: Heat exchanger freezing protection during automatic refrigerant charging (Close the refrigerant cylinder. Start again from step 1.).
RESULT: Heat exchanger freezing protection during automatic refrigerant charging (Close the refrigerant cylinder. Start again from step 1.).
CODE: P9.
RESULT: Malfunction of fan motor (humidifier unit) Defect of fan motor Broken relay harness Defect of outdoor unit PCB Defect of connector contact.
RESULT: Malfunction of fan motor (humidifier unit) Defect of fan motor Broken relay harness Defect of outdoor unit PCB Defect of connector contact.
CODE: P9.
RESULT: Automatic refrigerant charge operation completed.
RESULT: Automatic refrigerant charge operation completed.
CODE: PA.
RESULT: Broken wire of heater (humidifier unit) Defect of heater unit Defect of outdoor unit PCB Defect of thermistor.
RESULT: Broken wire of heater (humidifier unit) Defect of heater unit Defect of outdoor unit PCB Defect of thermistor.
CODE: PA.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of master unit is empty.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of master unit is empty.
CODE: PC.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of slave unit 2 is empty.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of slave unit 2 is empty.
CODE: PE.
RESULT: Automatic refrigerant charge operation nearly completed.
RESULT: Automatic refrigerant charge operation nearly completed.
CODE: PH.
RESULT: Malfunction of temperature (humidifier unit) Defect of heater unit Defect of thermistor Defect of connector contact Defect of outdoor unit PCB.
RESULT: Malfunction of temperature (humidifier unit) Defect of heater unit Defect of thermistor Defect of connector contact Defect of outdoor unit PCB.
CODE: PH.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of slave unit 1 is empty.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of slave unit 1 is empty.
CODE: PJ.
RESULT: Malfunction of capacity setting (Outdoor unit PCB) Capacity setting adaptor is not installed Improper capacity setting adaptor Defect of outdoor unit PCB.
RESULT: Malfunction of capacity setting (Outdoor unit PCB) Capacity setting adaptor is not installed Improper capacity setting adaptor Defect of outdoor unit PCB.
CODE: PJ.
RESULT: Improper combination between inverter and fan driver Mistake of inverter PCB Mistake of control PCB Mistake of inverter fan PCB System.
RESULT: Improper combination between inverter and fan driver Mistake of inverter PCB Mistake of control PCB Mistake of inverter fan PCB System.
CODE: U0.
RESULT: Shortage of refrigerant Shortage of refrigerant Closed stop valve Clogged refrigerant piping.
RESULT: Shortage of refrigerant Shortage of refrigerant Closed stop valve Clogged refrigerant piping.
CODE: U1.
RESULT: Reverse phase, open phase Reverse phase, open phase of power wiring Wrong wiring. Defect of outdoor unit PCB.
RESULT: Reverse phase, open phase Reverse phase, open phase of power wiring Wrong wiring. Defect of outdoor unit PCB.
CODE: U2.
RESULT: Defect of power supply voltage or instantaneous power failure. Defect of power supply voltage Instantaneous power failure Defect of wiring contact.
RESULT: Defect of power supply voltage or instantaneous power failure. Defect of power supply voltage Instantaneous power failure Defect of wiring contact.
CODE: U3.
RESULT: Check operation not executed. Check operation not executed.
RESULT: Check operation not executed. Check operation not executed.
CODE: U3.
RESULT: Malfunction of transmission Malfunction due to noise Defect of outdoor unit PCB Wrong wiring.
RESULT: Malfunction of transmission Malfunction due to noise Defect of outdoor unit PCB Wrong wiring.
CODE: U4.
RESULT: Malfunction of transmission between indoor and outdoor unit Defect or indoor-outdoor transmission wiring Malfunction due to noise Defect of indoor unit PCB and outdoor unit PCB.
RESULT: Malfunction of transmission between indoor and outdoor unit Defect or indoor-outdoor transmission wiring Malfunction due to noise Defect of indoor unit PCB and outdoor unit PCB.
CODE: U5.
RESULT: Malfunction of transmission between indoor unit and remote controller Defect of remote controller wiring Defect of indoor unit PCB Malfunction due to noise Defect of remote controller main/sub setting.
RESULT: Malfunction of transmission between indoor unit and remote controller Defect of remote controller wiring Defect of indoor unit PCB Malfunction due to noise Defect of remote controller main/sub setting.
CODE: U6.
RESULT: Malfunction of transmission between indoor units Faulty wiring Defect of indoor unit PCB Malfunction due to noise.
RESULT: Malfunction of transmission between indoor units Faulty wiring Defect of indoor unit PCB Malfunction due to noise.
CODE: U7.
RESULT: Malfunction of transmission between main body micro-computer. INV micro-computer Harness disconnection/broken wire between PCB Defect of outdoor unit PCB.
RESULT: Malfunction of transmission between main body micro-computer. INV micro-computer Harness disconnection/broken wire between PCB Defect of outdoor unit PCB.
CODE: U7.
RESULT: Malfunction of transmission between outdoor units Defect of wiring between outdoor units Defect of outdoor unit switch setting Defect of wiring between outdoor thermal storage units.
RESULT: Malfunction of transmission between outdoor units Defect of wiring between outdoor units Defect of outdoor unit switch setting Defect of wiring between outdoor thermal storage units.
CODE: U8.
RESULT: Malfunction of transmission between remote controllers Defect of remote controller main/sub setting Defect of remote controller wiring. Defect of remote controller PCB Others.
RESULT: Malfunction of transmission between remote controllers Defect of remote controller main/sub setting Defect of remote controller wiring. Defect of remote controller PCB Others.
CODE: 77.
RESULT: System No. 1 Malfunction of fan inter lock Defect of relay contact Broken wire.
RESULT: System No. 1 Malfunction of fan inter lock Defect of relay contact Broken wire.
CODE: 78.
RESULT: System No. 2 Malfunction of fan inter lock Defect of relay contact Broken wire.
RESULT: System No. 2 Malfunction of fan inter lock Defect of relay contact Broken wire.
CODE: 7A.
RESULT: System No. 2 Malfunction of current sensor of compressor Defect of current sensor. Defect of compressor Defect of outdoor unit PCB.
RESULT: System No. 2 Malfunction of current sensor of compressor Defect of current sensor. Defect of compressor Defect of outdoor unit PCB.
CODE: 7C.
RESULT: System No. 2 Malfunction of pump inter lock Cooling water pump interlock actuated.
RESULT: System No. 2 Malfunction of pump inter lock Cooling water pump interlock actuated.
CODE: 80.
RESULT: Malfunction of entering water temperature thermistor. Defect of connector contact. Defect of entering water temperature thermistor.
RESULT: Malfunction of entering water temperature thermistor. Defect of connector contact. Defect of entering water temperature thermistor.
CODE: 81.
RESULT: Malfunction of leaving water temperature thermistor Defect of connector contact Defect of leaving water temperature thermistor.
RESULT: Malfunction of leaving water temperature thermistor Defect of connector contact Defect of leaving water temperature thermistor.
CODE: 82.
RESULT: System No. 1 Malfunction of refrigerant thermistor Defect of connector contact Defect of refrigerant thermistor.
RESULT: System No. 1 Malfunction of refrigerant thermistor Defect of connector contact Defect of refrigerant thermistor.
CODE: 83.
RESULT: System No. 2 Malfunction of refrigerant thermistor Defect of connector contact Defect of refrigerant thermistor.
RESULT: System No. 2 Malfunction of refrigerant thermistor Defect of connector contact Defect of refrigerant thermistor.
CODE: 84.
RESULT: System No. 1 Malfunction of heat exchanger thermistor. Defect of connector contact. Defect of heat exchanger thermistor.
RESULT: System No. 1 Malfunction of heat exchanger thermistor. Defect of connector contact. Defect of heat exchanger thermistor.
CODE: 85.
RESULT: System No. 2. Malfunction of heat exchanger thermistor. Defect of connector contact. Defect of heat exchanger thermistor.
RESULT: System No. 2. Malfunction of heat exchanger thermistor. Defect of connector contact. Defect of heat exchanger thermistor.
CODE: 86.
RESULT: System No. 2. Malfunction of discharge pipe thermistor. Defect of connecting connector Defect of discharge pipe thermistor.
RESULT: System No. 2. Malfunction of discharge pipe thermistor. Defect of connecting connector Defect of discharge pipe thermistor.
CODE: 88.
RESULT: System No. 2. Malfunction of discharge pipe temperature. Shortage of gas. Defect of discharge pipe thermistor Defect of connector contact. Clogged refrigerant piping.
RESULT: System No. 2. Malfunction of discharge pipe temperature. Shortage of gas. Defect of discharge pipe thermistor Defect of connector contact. Clogged refrigerant piping.
CODE: 89.
RESULT: Malfunction of brazed-plate heat exchanger freezing Dirty heat exchanger. Shortage of refrigerant amount Defect of thermistor.
RESULT: Malfunction of brazed-plate heat exchanger freezing Dirty heat exchanger. Shortage of refrigerant amount Defect of thermistor.
CODE: 8A.
RESULT: System No. 2 Malfunction of leaving water temperature thermistor Defect of connector contact Defect of leaving water temperature thermistor.
RESULT: System No. 2 Malfunction of leaving water temperature thermistor Defect of connector contact Defect of leaving water temperature thermistor.
CODE: 8E.
RESULT: System No. 1 Malfunction of suction pipe thermistor 1 for heating Defect of connector contact Defect of suction pipe thermistor.
RESULT: System No. 1 Malfunction of suction pipe thermistor 1 for heating Defect of connector contact Defect of suction pipe thermistor.
CODE: 8F.
RESULT: System No. 1 Malfunction of suction pipe thermistor 2 for heating Defect of connector contact Defect of suction pipe thermistor.
RESULT: System No. 1 Malfunction of suction pipe thermistor 2 for heating Defect of connector contact Defect of suction pipe thermistor.
CODE: 8H.
RESULT: Abnormal high hot water temperature Three-way valve malfunction. Defect of thermistor Defect of water temperature setting.
RESULT: Abnormal high hot water temperature Three-way valve malfunction. Defect of thermistor Defect of water temperature setting.
CODE: 90.
RESULT: Abnormal chilled water quantity, abnormal AXP. Shortage of water volume Disconnection of AXP.
RESULT: Abnormal chilled water quantity, abnormal AXP. Shortage of water volume Disconnection of AXP.
CODE: 91.
RESULT: System No. 2 Malfunction of electronic expansion valve Defect of connector contact Defect of electronic expansion valve coil.
RESULT: System No. 2 Malfunction of electronic expansion valve Defect of connector contact Defect of electronic expansion valve coil.
CODE: 92.
RESULT: System No. 2 Malfunction of suction pipe thermistor Defect of connector contact Defect of suction pipe thermistor.
RESULT: System No. 2 Malfunction of suction pipe thermistor Defect of connector contact Defect of suction pipe thermistor.
CODE: 94.
RESULT: Malfunction of transmission (between heat reclaim ventilation unit and fan unit) Defect of fan unit PCB Defect of connecting wire between (1) and (2).
RESULT: Malfunction of transmission (between heat reclaim ventilation unit and fan unit) Defect of fan unit PCB Defect of connecting wire between (1) and (2).
CODE: 95.
RESULT: System No. 1 Malfunction of inverter system Defect of fan inverter unit.
RESULT: System No. 1 Malfunction of inverter system Defect of fan inverter unit.
CODE: 96.
RESULT: System No. 2 Malfunction of inverter system Defect of fan inverter unit.
RESULT: System No. 2 Malfunction of inverter system Defect of fan inverter unit.
CODE: 97.
RESULT: Malfunction of thermal storage unit Defect of thermal storage unit.
RESULT: Malfunction of thermal storage unit Defect of thermal storage unit.
CODE: 98.
RESULT: Malfunction of thermal storage brine pump Actuation of thermal storage brine pump overcurrent (OC).
RESULT: Malfunction of thermal storage brine pump Actuation of thermal storage brine pump overcurrent (OC).
CODE: 99.
RESULT: Malfunction of thermal storage brine tank Low water level of thermal storage brine tank System.
RESULT: Malfunction of thermal storage brine tank Low water level of thermal storage brine tank System.
CODE: U9.
RESULT: Malfunction of transmission (other system) Defect of communication between other indoor unit and outdoor unit Other indoor unit electronic expansion valve failure.
RESULT: Malfunction of transmission (other system) Defect of communication between other indoor unit and outdoor unit Other indoor unit electronic expansion valve failure.
CODE: UA.
RESULT: Defect of indoor/outdoor power supply Wrong model connections Wrong PCB connected Improper power supply Defect of PCB.
RESULT: Defect of indoor/outdoor power supply Wrong model connections Wrong PCB connected Improper power supply Defect of PCB.
CODE: UA.
RESULT: Malfunction of field setting Malfunction of field setting by remote controller Defect of remote controller wiring Defective connection of optional device Defect of indoor unit PCB.
RESULT: Malfunction of field setting Malfunction of field setting by remote controller Defect of remote controller wiring Defective connection of optional device Defect of indoor unit PCB.
CODE: UA.
RESULT: Improper combination of indoor and outdoor units Excess of connected indoor units Malfunction of field setting Uncanceled service mode. Defect of outdoor unit PCB.
RESULT: Improper combination of indoor and outdoor units Excess of connected indoor units Malfunction of field setting Uncanceled service mode. Defect of outdoor unit PCB.
CODE: UA.
RESULT: Remote temperature setting wire disconnection Remote temperature setting wire disconnection Defect of connector contact.
RESULT: Remote temperature setting wire disconnection Remote temperature setting wire disconnection Defect of connector contact.
CODE: UC.
RESULT: Malfunction of setting of centralized controller address. Address duplication of centralized controller.
RESULT: Malfunction of setting of centralized controller address. Address duplication of centralized controller.
CODE: UE.
RESULT: Malfunction of transmission between indoor unit and centralized controller Malfunction of wiring between indoor unit and centralized controller Defect of setting of group number Defect of indoor unit PCB.
RESULT: Malfunction of transmission between indoor unit and centralized controller Malfunction of wiring between indoor unit and centralized controller Defect of setting of group number Defect of indoor unit PCB.
CODE: UF.
RESULT: Wiring and piping mismatch Improper connection of transmission wiring between indoor-outdoor units and outdoor-outdoor units.
RESULT: Wiring and piping mismatch Improper connection of transmission wiring between indoor-outdoor units and outdoor-outdoor units.
CODE: UH.
RESULT: Malfunction of system Improper connection of transmission wiring between indoor- outdoor units and outdoor-outdoor units Defect of indoor and outdoor unit PCB (RA: Mismatching indoor and outdoor units, Defect of voltage, Freeze protection in other indoor unit (k).
RESULT: Malfunction of system Improper connection of transmission wiring between indoor- outdoor units and outdoor-outdoor units Defect of indoor and outdoor unit PCB (RA: Mismatching indoor and outdoor units, Defect of voltage, Freeze protection in other indoor unit (k).
CODE: UJ.
RESULT: Malfunction of transmission (Accessory devices) Defect of accessory devices Faulty wiring.
RESULT: Malfunction of transmission (Accessory devices) Defect of accessory devices Faulty wiring.
CODE: M1.
RESULT: Malfunction of centralized remote controller PCB. Defect of centralized remote controller PCB.
RESULT: Malfunction of centralized remote controller PCB. Defect of centralized remote controller PCB.
CODE: M8.
RESULT: Malfunction of transmission between optional controllers for centralized control Other centralized control power disconnection Centralized control reset switch ON Defect of transmission wiring. Central remote controller address change.
RESULT: Malfunction of transmission between optional controllers for centralized control Other centralized control power disconnection Centralized control reset switch ON Defect of transmission wiring. Central remote controller address change.
CODE: MA.
RESULT: Improper combination of optional controllers for centralized control Improper combination of optional controllers for centralized control More than one master controller is connected Faulty setting of centralized control Defect of centralized control.
RESULT: Improper combination of optional controllers for centralized control Improper combination of optional controllers for centralized control More than one master controller is connected Faulty setting of centralized control Defect of centralized control.
CODE: MC.
RESULT: Address duplication, improper setting Address duplication of central remote controller.
RESULT: Address duplication, improper setting Address duplication of central remote controller.
CODE: 60.
RESULT: External protection device actuated Actuation of external protection device Defect of output signal wiring Defect of control PCB.
RESULT: External protection device actuated Actuation of external protection device Defect of output signal wiring Defect of control PCB.
CODE: 64.
RESULT: Malfunction of indoor air thermistor Defect of connecting connector Defect of thermistor for indoor air Defect of control PCB.
RESULT: Malfunction of indoor air thermistor Defect of connecting connector Defect of thermistor for indoor air Defect of control PCB.
CODE: 65.
RESULT: Malfunction of outdoor air thermistor Defect of connector contact Defect of control PCB Defect of outdoor air thermistor.
RESULT: Malfunction of outdoor air thermistor Defect of connector contact Defect of control PCB Defect of outdoor air thermistor.
CODE: 6A.
RESULT: Malfunction of damper system Defect of connector contact Defect of damper motor Defect of limit switch Defect of control PCB.
RESULT: Malfunction of damper system Defect of connector contact Defect of damper motor Defect of limit switch Defect of control PCB.
CODE: 70.
RESULT: System No. 2 Compressor overload Shortage of refrigerant amount Defect of connector contact Leakage of four way valve.
RESULT: System No. 2 Compressor overload Shortage of refrigerant amount Defect of connector contact Leakage of four way valve.
CODE: 71.
RESULT: System No. 2 Compressor overcurrent Shortage of refrigerant amount Short-circuit Defect of compressor.
RESULT: System No. 2 Compressor overcurrent Shortage of refrigerant amount Short-circuit Defect of compressor.
CODE: 72.
RESULT: System No. 2 Fan motor overcurrent Defect of fan motor connector contact Defect of fan motor Defect of PCB.
RESULT: System No. 2 Fan motor overcurrent Defect of fan motor connector contact Defect of fan motor Defect of PCB.
CODE: 73.
RESULT: System No. 2 Malfunction of high pressure (HPS) actuated Dirty heat exchanger Clogged refrigerant piping Defect of HPS Shortage of water volume Defect of connector contact.
RESULT: System No. 2 Malfunction of high pressure (HPS) actuated Dirty heat exchanger Clogged refrigerant piping Defect of HPS Shortage of water volume Defect of connector contact.
CODE: 74.
RESULT: System No. 2 Malfunction of low pressure switch (LPS) Clogged refrigerant piping Shortage of gas. Defect of connector contact Defect of LPS.
RESULT: System No. 2 Malfunction of low pressure switch (LPS) Clogged refrigerant piping Shortage of gas. Defect of connector contact Defect of LPS.
CODE: 75.
RESULT: System No. 2 Malfunction of low pressure sensor Defect of connector contact Defect of PCB Defect of low pressure sensor.
RESULT: System No. 2 Malfunction of low pressure sensor Defect of connector contact Defect of PCB Defect of low pressure sensor.
CODE: 76.
RESULT: System No. 2 Malfunction of high pressure sensor Defect of connector contact Defect of PCB Defect of high pressure sensor.
RESULT: System No. 2 Malfunction of high pressure sensor Defect of connector contact Defect of PCB Defect of high pressure sensor.
See What Our Customers Are Saying:
Jun 4, 2018
End to end service. From quote, overseeing installation, contacting and making arrangements for energy audit. Warranty program is comprehensive. Cleaned up mess of assistant walking through my place without proper indoor foot covering when I pointed out that I was not happy about footprints on my floors.
Jun 11, 2018
In April we hired Twintech Heating & Cooling to replace our 20 year old water tank & 35 year old air conditioner. We got 5 estimates for the job & decided to go with Twintech for the following reasons.
- The Sales Manager, Dave, was very personable & knowledgeable as all of our questions were answered. (We had a list of questions we asked each of the contractors when we got the estimates)
- We got 5 estimates for the job. All contractors verbally told us they had the required qualifications but Dave was the only one to physically show us their license & insurance documentation.
- Twintech carried the Napoleon air conditioner & we wanted to support Canadian industry as it is assembled in Barrie On.
Safety is important at Twintech as demonstrated when we discussed with Dave, the need to change our install date because of freezing rain. Access was required by navigating a set of outside steps & Dave identified that safety took precedence.
On the installation date, Greg, Peter & Grant showed up on time & methodically accomplished the removal & installation of both units. The guys did a great job cleaning up as well.
When the job was completed we mentioned to Greg that we were pleased with the work they had done & were going to have them come out & do our furnace inspection in Sept. Greg said we can save our money as he had inspected the heat exchanger on the furnace while doing the job & there was no need to have another inspection in Sept. We were very impressed with Gregs initiative. This is top shelf service. Thank you Greg.
As the weather was too cool to complete a functional test of the air conditioner on the installation date, Dave made a follow-up call to us to see how things were going & Greg also came out to check the operation. No problems.
We are very happy we hired professionals like Dave, Greg, Grant & Peter & have no hesitation in recommending Twintech Heating & Cooling. They will now be our "go to" guys.
Nov 18, 2018
These guys are the best. From start to finish they exceeded my expectations and delivered a great product. They accommodated the nuances of my 100 year old home which was really appreciated. The install was easy to schedule and done fantastically. Im so excited to have an efficiently heated and cooled home.
Aug 12, 2018
Twintech were fast and efficient contractors. It only took 48 hours between an initial home visit and complete installation. The workmen were polite and hardworking. The site was left clean with the old furnace etc. removed. They helped arrange an environmental assessment in order that I could receive the maximum rebate. They even called me within a week to determine if I was satisfied with their work and to reassure me that I could call them anytime I experienced heating difficulties or had any questions. I recommend Twintech for your heating problems.
Jul 21, 2018
Courteous and professional service from initial consultation through to the installation. We highly recommend Twintech for outstanding service in the industry. Competitive pricing, professional and accurate advice, attention to detail, respect for their client's home and cleaning up at the completion of installation.
Jul 12, 2018
Last night was the coldest day of the year so far and I woke up to my house being 54 degrees... I called Twintech at 2:45am and Greg was on site by 3:30am. The furnace required a part and he returned to his shop and came back to my home around 4:15am, furnace up and running by 4:30am. THANK YOU TWINTECH! Your service is second to none.
Jun 25, 2018
After much research & getting 4 quotes, we hired Twintech team for our new furnace installation, prices were fair, they carried great product brands & more importantly installation was expertly done by one of the owners (Greg & his assistant Peter) which gave me an added piece of mind. Dave was very organized & answered all my questions in great detail, especially re: the Enbridge & Govt. rebate program.
Jun 10, 2018
My old air conditioner was 20 years old and developed a Freon leak and it was more cost effective to replace rather than repair. There are a large number of heating and air conditioning companies available in my area so I contacted several for quotes. Twintech heating and cooling responded quickly to the inquiry I left on their website and their sales person Dave came by the following day. He was knowledgeable about the field and was able to show copies of the various refrigeration and gas fitting licenses along with workmens compensation, TSSA and other certifications. He also suggested a particular manufacturer and model of AC unit appropriate to my house and gave me a quote. Since the price was reasonable, service had been good and the reviews on the internet were also good, I decided to purchase an AC unit from them. Installation was quickly scheduled. They showed up on time, did a good job installing the new unit including some sheet metal work to get the new heat exchanger to fit in the furnace duct, and cleaned up afterward. In addition, they noticed that my existing AC was installed too close to the furnace exhaust (based on building code) and were able to mount the new AC the appropriate distance from the exhaust. Overall, they did an excellent job and were a pleasure to work with.
Jun 5, 2018
All interactions from sales to installation were Courteous and professional. The installation was seamless and the attention to detail including clean up was outstanding. I highly recommend TwinTech Heating and Cooling.
May 17, 2018
Twintech's Salesman Dave arrived promptly was friendly and courteous, listened and assured us the installation would be completed according to our requests. The crew arrived early morning on May 11th, 2018 and worked through till late afternoon non-stop. They were very friendly, very professional, their expertise was excellent, their workmanship outstanding and the installation was completed in a timely and efficient manner. We were completely satisfied and happy with the quality of the work.
See What Our Customers Are Saying:
Feb 18, 2025
Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.
Feb 18, 2025
We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!
Feb 18, 2025
TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!
Feb 18, 2025
Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!
Feb 18, 2025
Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.
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