ERROR CODES

ERROR CODES

IF YOUR UA SPLIT UA PRESENTS A PROBLEM, THE DISPLAY OF YOUR INDOOR UNIT WILL SHOW AN ERROR CODE AND IN THIS WAY WE CAN KNOW OR GUIDE YOU ON HOW TO SOLVE IT.

  • C5
  • E6
  • F0
  • F1
  • H5
  • H6

ERROR CODE C5

STATUS:

Entire unit stops working

CAUSE:

1 Failure in the card electrical jumper (Jumper).

SOLUTION:

Replace or replace jumper.

ERROR CODE E6

STATUS:

Cold: compressor for operation, while indoor unit is running
Heat: all loads for operation.

CAUSE:

Connection cable between indoor unit and outdoor unit 2.

2. Wiring inside the unit

3. Communication circuit of the indoor unit

4. Outdoor unit communication circuit.

SOLUTION:

Check that the communication cable is connected correctly in both units according to the color code / Replace the cable 2.

2. Replace damaged wiring

3. Replace inner board

4. Replace outer board.

ERROR CODE F0

STATUS:

Cold: compressor and outdoor. Unit stops running, while indoor fan runs;
Heat: compressor, outdoor fan and indoor fan stops running.

CAUSE:

1. Is refrigerant leaking?
2. Check if the gas valve and outdoor liquid valve The unit opens fully;
3. Is the capillary or electronic expansion valve blocked? 4.
4. Has the indoor unit evaporator temperature sensor fallen out?
5. Has the indoor unit evaporator temperature sensor fallen off?
6. If the cooling system is under high ambient humidity, is what caused a small temperature difference for heat exchange.

SOLUTION:

1. Repair the leak, vacuum and recharge refrigerant to the system.
2. Fully open the valves.
3. If the capillary is blocked, replace the part.
4. Accommodate the evaporator ambient temperature sensor.
5. Accommodate the condenser ambient temperature sensor.
6. Turn the equipment off for 20 min and turn it on again.

ERROR CODE F1

STATUS:

Cold: indoor fan runs, while compressor stops operation;
Heat: all loads stop running.

CAUSE:

1. Is refrigerant leaking?
2. Check if the gas valve and outdoor liquid valve The unit is fully opened;
3. Is the capillary or electronic expansion valve blocked? 4.
4. Has the indoor unit evaporator temperature sensor fallen out?
5. Has the indoor unit evaporator temperature sensor fallen off?
6. If the cooling system is under high ambient humidity, is what caused a small temperature difference for heat exchange.

SOLUTION:

1. Repair the leak, vacuum and recharge refrigerant to the system.
2. Fully open the valves.
3. If the capillary is blocked, replace the part.
4. Accommodate the evaporator ambient temperature sensor.
5. Accommodate the condenser ambient temperature sensor.
6. Turn the equipment off for 20 min and turn it on again.

ERROR CODE H5

STATUS:

Cold: compressor stops operation, while indoor fan runs.
Heat: all loads stop operation.

CAUSE:

1. COMP compressor terminal
2. Supply voltage
3. Compressor
4. Refrigerant charge quantity

SOLUTION:

1. Replace terminal.
2. If the circuit is restricted, repair and retest. If there are no restrictions and the component still does not work or does not work properly, replace it.
3. Replace compressor
4. Check pressures and set to specification.

ERROR CODE H6

STATUS:

The entire unit stops operating.

CAUSE:


1. Is the motor terminal loose?
2. Is the motor damaged?
3. Is the cable connected to the motor damaged?
4. Is the AP 1 control board of the indoor unit damaged?
5. Is the fan blocked?

SOLUTION:

1. Connect the terminal correctly.
2. Replace the evaporator unit motor.
3. Replace the evaporator unit motor.
4. Replace evaporator board.
5. Make sure that the fan is not blocked by a component that is out of place, arrange the component so that it does not obstruct the rotation of the fan.

  • E1
  • H5
  • H6
  • F4
  • A1

ERROR CODE E1

Compressor High-Pressure Protection

Error display ODU mainboard LED displayer

Error judgment condition and method

It is judged through the action of a high-pressure switch. If the high-pressure switch is cut off, it is judged that

high-pressure is too high and the system stops operation for protection.

Possible reason:

■ Cut-off valve of ODU or IDU is not fully opened.

■ High-pressure switch is abnormal.

■ Outdoor or indoor fan is not working properly.

■ IDU filter or air duct is blocked (heating mode).

■ Ambient temperature is too high.

ERROR CODE H5

IPM module current protection

ERROR CODE H6

DC fan error

ERROR CODE F4

Discharge temperature sensor error

ERROR CODE A1

Outdoor fan IPM module protection

  • C5
  • E6
  • F0
  • F1
  • H5
  • H6

ERROR CODE C5

STATUS:

Entire unit stops working

CAUSE:

1 Failure in the card electrical jumper (Jumper).

SOLUTION:

Replace or replace jumper.

ERROR CODE E6

STATUS:

Cold: compressor for operation, while indoor unit is running
Heat: all loads for operation.

CAUSE:

Connection cable between indoor unit and outdoor unit 2.

2. Wiring inside the unit

3. Communication circuit of the indoor unit

4. Outdoor unit communication circuit.

SOLUTION:

Check that the communication cable is connected correctly in both units according to the color code / Replace the cable 2.

2. Replace damaged wiring

3. Replace inner board

4. Replace outer board.

ERROR CODE F0

STATUS:

Cold: compressor and outdoor. Unit stops running, while indoor fan runs;
Heat: compressor, outdoor fan and indoor fan stops running.

CAUSE:

1. Is refrigerant leaking?
2. Check if the gas valve and outdoor liquid valve The unit opens fully;
3. Is the capillary or electronic expansion valve blocked? 4.
4. Has the indoor unit evaporator temperature sensor fallen out?
5. Has the indoor unit evaporator temperature sensor fallen off?
6. If the cooling system is under high ambient humidity, is what caused a small temperature difference for heat exchange.

SOLUTION:

1. Repair the leak, vacuum and recharge refrigerant to the system.
2. Fully open the valves.
3. If the capillary is blocked, replace the part.
4. Accommodate the evaporator ambient temperature sensor.
5. Accommodate the condenser ambient temperature sensor.
6. Turn the equipment off for 20 min and turn it on again.

ERROR CODE F1

STATUS:

Cold: indoor fan runs, while compressor stops operation;
Heat: all loads stop running.

CAUSE:

1. Is refrigerant leaking?
2. Check if the gas valve and outdoor liquid valve The unit is fully opened;
3. Is the capillary or electronic expansion valve blocked? 4.
4. Has the indoor unit evaporator temperature sensor fallen out?
5. Has the indoor unit evaporator temperature sensor fallen off?
6. If the cooling system is under high ambient humidity, is what caused a small temperature difference for heat exchange.

SOLUTION:

1. Repair the leak, vacuum and recharge refrigerant to the system.
2. Fully open the valves.
3. If the capillary is blocked, replace the part.
4. Accommodate the evaporator ambient temperature sensor.
5. Accommodate the condenser ambient temperature sensor.
6. Turn the equipment off for 20 min and turn it on again.

ERROR CODE H5

STATUS:

Cold: compressor stops operation, while indoor fan runs.
Heat: all loads stop operation.

CAUSE:

1. COMP compressor terminal
2. Supply voltage
3. Compressor
4. Refrigerant charge quantity

SOLUTION:

1. Replace terminal.
2. If the circuit is restricted, repair and retest. If there are no restrictions and the component still does not work or does not work properly, replace it.
3. Replace compressor
4. Check pressures and set to specification.

ERROR CODE H6

STATUS:

The entire unit stops operating.

CAUSE:


1. Is the motor terminal loose?
2. Is the motor damaged?
3. Is the cable connected to the motor damaged?
4. Is the AP 1 control board of the indoor unit damaged?
5. Is the fan blocked?

SOLUTION:

1. Connect the terminal correctly.
2. Replace the evaporator unit motor.
3. Replace the evaporator unit motor.
4. Replace evaporator board.
5. Make sure that the fan is not blocked by a component that is out of place, arrange the component so that it does not obstruct the rotation of the fan.

  • E1
  • H5
  • H6
  • F4
  • A1

ERROR CODE E1

Compressor High-Pressure Protection

Error display ODU mainboard LED displayer

Error judgment condition and method

It is judged through the action of a high-pressure switch. If the high-pressure switch is cut off, it is judged that

high-pressure is too high and the system stops operation for protection.

Possible reason:

■ Cut-off valve of ODU or IDU is not fully opened.

■ High-pressure switch is abnormal.

■ Outdoor or indoor fan is not working properly.

■ IDU filter or air duct is blocked (heating mode).

■ Ambient temperature is too high.

ERROR CODE H5

IPM module current protection

ERROR CODE H6

DC fan error

ERROR CODE F4

Discharge temperature sensor error

ERROR CODE A1

Outdoor fan IPM module protection

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