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.

E0 - Indoor Unit EEPROM Parameter Error

  • Shut off the power supply then turn it back on after 5 seconds. Is it still displaying the error?
    • Yes
      Is the EEPROM Chip welded on?
      • Yes

        Replace the main PC Board

      • No
        Is the EEPROM Chip Plugged in correctly?
        • Yes

          Replace the Main PC Board

        • No
          Correct the connection. Is your unit working now?
          • Yes

            Problem Solved

          • No

            Go back 2 steps

    • No
      Is it working?
      • Yes

        Problem Solved

      • No

        Please Contact Support

E1 - Indoor / outdoor units communication error

  • Remove the power wire then restart after 5 seconds. Is the unit still displaying the error?
    • Yes
      Is the Vs alternating with positive values?
      • Yes
        Check all of the wiring with the outdoor units. Is the wiring to the reactor connected correctly and firmly?
        • Yes
          Measure the resistance of the reactor (the one without the capacitor). Is it at Zero (0)?
          • Yes
            Replace the outdoor main PC board. Is it working now?
            • Yes

              Problem Solved

            • No

              Replace the indoor main PC board.

          • No

            Replace the reactor

        • No
          Connect the wires. Is the unit working now?
          • Yes

            Problem Solved

          • No

            Go back 2 steps

      • No
        Check all of the wiring with indoor units. Is the wiring to the indoor main PC Board connected correctly?
        • Yes
          Replace the indoor main PC Board. Is it working now?
          • Yes

            Problem Solved

          • No

            Replace the outdoor main PC Board.

        • No
          Connect the wiring correctly. Is it working now?
          • Yes

            Problem Solved

          • No

            Go Back 2 steps

    • No
      Is the unit working?
      • Yes

        Solved

      • No

        Please Contact Support

E2 - Zero-crossing signal detection error

  • Are the connections to the power supply normal?
    • Yes

      Replace the indoor main PC Board

    • No
      Correct the connections. Is it working now?
      • Yes

        Problem Solved

      • No

        Go back 2 steps

E3 - Indoor fan speed has been out of control

  • Shut of the power supply. Restart it after 5 seconds. Is the error code still displayed?
    • Yes
      Shut the power off. Attempt to manually rotate the fan. Is the fan moving properly?
      • Yes
        Are all of the fan wires connected properly?
        • Yes
          Is the fan motor normal at index 1?
          • Yes
            Is the main PC board normal through index 2?
            • Yes

              Replace the fan motor

            • No

              Replace the main PC Board

          • No

            Replace the fan motor

        • No
          Correct the cable connections. Is the unit working properly now?
          • Yes

            Problem Solved

          • No

            Go Back 2 Steps

      • No
        Remove anything that might be obstructing the fan. Is the fan rotating properly now?
        • Yes

          Problem Solved

        • No

          Go Back 2 Steps

    • No
      Is your unit working now?
      • Yes

        Problem Solved

      • No

        Please contact support

E4 - Indoor room temperature sensor T1 open circuit or short circuit

  • Are the connections good between the sensor and main PC board?
    • Yes
      Is the sensor resistance value via table 1 (p64) & table 2 (p65) normal?
      • Yes

        Replace the indoor or outdoor PC board

      • No

        Replace the Sensor

    • No
      Correct the connections. Is it working now?
      • Yes

        Problem Solved

      • No

        Go back 2 steps

E5 - Evaporator coil temperature sensor T2 open circuit or short circuit

  • Is the connection between the temperature sensor and PC board properly connected?
    • Yes
      Is the sensor's resistance value via table 1 (p64) and table 2 (p65) normal?
      • Yes

        Replace the indoor or outdoor main PC board.

      • No
        Replace the Sensor. is the unit working now?
        • Yes

          Problem Solved

        • No

          Please Contact Support

    • No
      Correct the connections. Is the unit working now?
      • Yes

        Problem Solved

      • No

        Please Contact Support

EC - Refrigerant leakage detection

  • Shut of the power supply for 5 seconds then restart it. Is the unit still displaying the error?
    • Yes
      Is the indoor air outlet blowing cool air?
      • Yes
        Is the T2 Correctly Installed?
        • Yes

          Replace the Indoor PC board

        • No
          Correct the connection. Is the unit working now?
          • Yes

            Problem Solved

          • No

            Replace the Indoor PC board

      • No
        Are there any leaks from the unit (Check Gas & Liquid Valves)?
        • Yes

          Repair the leakage and Recharge the refrigerant

        • No
          Are there any blockages (capillaries or welded point of pipes)
          • Yes
            Clear the blocking. Is your unit working now?
            • Yes

              Problem Solved

            • No

              Please Contact Support

          • No

            Please Contact Support

    • No
      Is the unit working now?
      • Yes

        Problem Solved

      • No

        Please Contact Support

F1 - Outdoor temperature sensor T4 open circuit or short circuit

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F2 - Condenser coil temperature sensor T3 open circuit or short circuit

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F3 - Compressor discharge temperature sensor T5 open circuit or short circuit

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F4 - Outdoor unit EEPROM parameter error

  • Shut off the power supply then turn it back on after 5 seconds. Is it still displaying the error?
    • Yes
      Is the EEPROM Chip welded on?
      • Yes

        Replace the main PC Board

      • No
        Is the EEPROM Chip Plugged in correctly?
        • Yes

          Replace the Main PC Board

        • No
          Correct the connection. Is your unit working now?
          • Yes

            Problem Solved

          • No

            Go back 2 steps

    • No
      Is it working?
      • Yes

        Problem Solved

      • No

        Please Contact Support

P0 - IPM malfunction or IGBT over-strong current protection

  • Are the wires connecting the main PC board and compressor broken or connected incorrectly?
    • Yes
      Replace / Correct the wires. Is it working now?
      • Yes

        Problem Solved

      • No

        Please go back 2 steps

    • No
      Are the IPM continuity resistance values uniform?
      • Yes
        Is the outdoor fan running properly?
        • Yes
          Are the compressor resistance values uniform?
          • Yes

            Replace the compressor

          • No

            If the main PC board and IPM are separate, replace the main PC board.

        • No

          Replace the fan motor.

      • No

        Replace the IPM Board or main PC board if both are integrated together.

P1 - Over voltage or over low voltage protection

  • Are all of the wire's connected normally?
    • Yes
      Power on and when the unit is in standby, check if the voltage between P and N is around DC 310V or 340V or 380V? For different kinds of units, the voltage differs. Consult with technical engineer to get definite value. Then start up the unit, measure the voltage between P and N. Is it in 220V~400V?
      • Yes

        Replace the IPM board if it's separate from main PC board.

      • No

        Replace the outdoor main PC board.

    • No

      Correct the connections

P4 - Inverter compressor drive error

  • Are the wires connected improperly or broken?
    • Yes

      Replace/Correct the wires

    • No
      Are the IPM terminal resistance values uniform?
      • Yes
        Is the outdoor fan running properly?
        • Yes
          Are the compressor resistance values uniform?
          • Yes

            Replace the main PC board if it's separate from IPM.

          • No

            Replace the compressor

        • No

          Replace the Fan Motor

      • No

        Replace the IPM board if it's separate. Replace the entire main PC board if it's integrated with IPM.