PLEASE SELECT THE ERROR CODE BELOW

Instructions

Tap the error code below to begin the troubleshooting process.

If you are not able to resolve your issue or if you find an error in this troubleshooting process, please click here to contact us.

(1) a - Indoor room temperature T1 and sensor evaporator temperature sensor T2 is abnormal

  •  
    Is connection to connector of temp. sensor good?
    • No

      Repair connector

    • Yes
      Check the resistance of the temp. sensor according to Appendix 1
      • Yes
        Is it the resistance is normal?
        • No

          Replace the sensor

        • Yes

          Indoor PCB is defective.

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(1) b - Condenser temperature sensor T3 is abnormal

  • Is connection to connector of temp. sensor good?
    • No

      Repair connector

    • Yes
      Check the resistance of the temp. sensor according to Appendix 1
      • Yes
        Is it the resistance is normal?
        • Yes

          Indoor PCB is defective.

        • No

          Replace the sensor

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(1) c - EEPROM malfunction

  • EEPROM malfunction
    • Yes
      EEPROM chip is broken
      • Yes

        Replace EEPROM

      • No
        Check whether the main control chip is broken
        • Yes

          Replace the control chip

        • No

          Check PCB board or replace the main control board

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(1) f - Full-water malfunction

  •  
    Full-water malfunction
    • Yes
      Check whether the water-level switch is inserted well
      • No

        Insert the water-level switch well

      • Yes
        Check whether the water-level switch is broken
        • No

          Replace the water-level switch

        • Yes

          Check PCB board or replace the main control board

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(2) a - Phase sequence error:

  • Phase sequence error
    • Yes
      Change the order of two of the wires to power supply.
      • yes
        Switch on the unit again.
        • yes

          If the problem cannot be solved, the outdoor PCB is defective

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(2) b - Overload of current

  • Overload of current
    • Yes
      Check the current, normally Is the current in rated range?
      • Yes

        The outdoor PCB is defective

      • No

        Possible reason 1. Outdoor fan is defective 2. The compressor is defective 3. Refrigerant is over charged 4. Air enter the refrigerant system

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(2) c - Lack of phase

  •  
    Lack of phase
    • Yes
      Check the power supply, is it 3 phase, 380-415V?
      • Yes
        Check the connection between power supply and terminal, is the voltage in outdoor terminal is 3 phase, 380-415V?
        • Yes

          Outdoor PCB is defective

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(2) d - Protection of pressure or temp.

  •  
    Protection of pressure or temp.
    • Yes
      Is it k1 or K2 open ?
      • K1
        Is temp. protective switch K1 open
        • Yes

          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

      • K2
        Is pressure protective switch K2 open
        • Yes

          Possible reason 1. The wires is loose to K2 2. Air or other gas in the refrigerant. 3. Heat exchanger is dirty 4. Outdoor motor or fan blade is defective 5. Outdoor unit is in bad ventilation 6. Refrigerant is too much

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(2) e - Open-circuit and short-circuit trouble of T3

  •  
    Is connection to connector of temp. sensor good?
    • No

      Repair connector

    • Yes
      Check the resistance of the temp. sensor according to Appendix 1
      • Yes
        Is it the resistance is normal?
        • No

          Replace the sensor

        • Yes

          Indoor PCB is defective.

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(2) f - Open-circuit and short-circuit trouble of T4

  • Is connection to connector of temp. sensor good?
    • No

      Repair connector

    • Yes
      Check the resistance of the temp. sensor according to Appendix 1
      • Yes
        Is it the resistance is normal?
        • No

          Replace the sensor

        • Yes

          Indoor PCB is defective.

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(2) g - High temperature protection of condenser

  •  
    High temperature protection of condenser
    • Yes
      Check the resistance of the temp. sensor according to Appendix 1, is it normal?
      • No

        Replace the sensor

      • Yes

        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

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