Buzz
Error codes for inverter wall-mounted air conditioners – symbol E
Error codes for inverter wall-mounted air conditioners – symbol E include the following errors:
1. Error code E1
+ Error name: Faulty temperature sensor in the indoor coil.
+ Cause: Malfunctioning main circuit board of the indoor unit; faulty environmental sensor of the indoor unit; Loose sensor plug jack.
+ Solution: Replace the faulty main circuit board of the indoor unit; replace the faulty environmental sensor of the indoor unit; Replug the sensor plug jack.
2. Error code E2
+ Error name: Faulty temperature sensor in the outdoor coil.
+ Cause: Malfunctioning main circuit board of the indoor unit; malfunctioning main circuit board of the outdoor unit; faulty outdoor coil sensor; Loose sensor plug jack.
+ Solution: Replace the faulty main circuit board of the indoor unit; replace the faulty main circuit board of the outdoor unit; replace the faulty outdoor coil sensor; Replug the sensor plug jack.
3. Error code E3
+ Error name: Faulty temperature sensor in the outdoor coil.
+ Cause: Malfunctioning main circuit board of the indoor unit; faulty outdoor coil sensor; Loose sensor plug jack.
+ Solution: Replace the faulty outdoor coil sensor; replace the faulty main circuit board of the indoor unit; Replug the sensor plug jack.
4. Error code E4
+ Error name: Faulty indoor unit fan motor.
+ Cause: Malfunctioning indoor unit fan motor; faulty main circuit board of the indoor unit; Loose motor plug jack on the indoor unit board.
+ Solution: Replace the faulty indoor unit fan motor; replace the faulty main circuit board of the indoor unit; Check and reconnect the motor plug jack on the indoor unit board.
5. Error code E5 (5E)
+ Error name: Loss of signal connection between the indoor and outdoor units.
+ Cause: Malfunctioning main circuit board of either the indoor or outdoor unit; Loss of signal connection wire between the outdoor and indoor units; Incorrect signal wire connection between the outdoor and indoor units.
+ Solution: Replace the faulty main circuit board of either the indoor or outdoor unit; Check the signal connection wire between the outdoor and indoor units; Verify and correctly connect the signal wire ends on the terminal blocks between the indoor and outdoor units.
E3 indicates a fault with the temperature sensor of the outdoor coil.Error codes for inverter wall-mounted air conditioners – symbol F
Error codes for inverter wall-mounted air conditioners – symbol F include the following errors:
6. Error code F0
+ Error name: F0 display light
+ Cause: Faulty main circuit board of the outdoor unit; damaged main circuit board of the outdoor unit; outdoor unit clogged and unable to dissipate heat; refrigerant leakage.
+ Solution: Replace the faulty main circuit board of the outdoor unit; check the heat dissipation of the outdoor and indoor units; check the refrigerant level.
7. Error code F1
+ Error name: Faulty outdoor unit protection module board.
+ Cause: Faulty main circuit board of the outdoor unit; faulty outdoor unit protection module board; machine unable to dissipate heat; insufficient refrigerant.
+ Solution: Install a new outdoor unit motherboard; replace the outdoor unit protection module board; check for dirt buildup; inspect refrigerant levels.
8. Error code F2
+ Error name: Phase protection error for the outdoor unit, insufficient voltage.
+ Cause: Faulty main circuit board of the outdoor unit; inadequate power supply, phase protection error; loose connection jack on the board connected to the compressor.
+ Solution: Install a new outdoor unit motherboard; check power supply; replace the sensor coil for the outdoor unit; reinsert the jack on the board.
9. Error code F3
+ Error name: Compressor not functioning error.
+ Cause: Faulty main circuit board of the outdoor unit; faulty compressor; loose connection jack on the board connected to the compressor.
+ Solution: Install a new compressor; install a new outdoor unit motherboard; reinsert the jack on the board.
F3 indicates a compressor malfunction error.10. Error code F4
+ Error name: Faulty temperature sensor for the outdoor unit coil.
+ Cause: Faulty main circuit board of the outdoor unit; faulty outdoor unit coil temperature sensor; Loose sensor plug jack.
+ Solution: Replace the faulty main circuit board of the outdoor unit; replace the outdoor unit coil temperature sensor; Replug the sensor plug jack.
11. Error code F5
+ Error name: Faulty temperature sensor for the compressor discharge head of the outdoor unit.
+ Cause: Faulty main circuit board of the outdoor unit; faulty temperature sensor for the compressor discharge head of the outdoor unit; Loose sensor plug jack.
+ Solution: Replace the faulty main circuit board of the outdoor unit; replace the temperature sensor for the compressor discharge head of the outdoor unit; reinsert the sensor plug jack.
12. Error code F6
+ Error name: Faulty temperature sensor for the outdoor unit ambient environment.
+ Cause: Faulty main circuit board of the outdoor unit; faulty temperature sensor for the outdoor unit ambient environment; Loose sensor plug jack.
+ Solution: Replace the faulty main circuit board of the outdoor unit; replace the temperature sensor for the outdoor unit ambient environment; reinsert the sensor plug jack.
13. Error code F7
+ Error name: Voltage protection error.
+ Cause: Faulty main circuit board of either the indoor or outdoor unit; inadequate power supply, phase protection error; Loose sensor plug connection on the board.
+ Solution: Install a new indoor or outdoor unit motherboard; check power supply; inspect power source; reinsert sensor plug on the board.
14. Error code F8
+ Error name: Faulty outdoor unit motherboard, outdoor unit module.
+ Cause: Faulty outdoor unit motherboard; faulty outdoor unit module IC; machine unable to dissipate heat; insufficient refrigerant.
+ Solution: Install a new outdoor unit motherboard; replace the outdoor unit module IC; check for dirt buildup; inspect refrigerant levels.
15. Error code F9
+ Error name: Faulty outdoor unit motherboard.
+ Cause: Faulty outdoor unit motherboard.
+ Solution: Install a new outdoor unit motherboard.
16. Error code FA
+ Error name: Faulty temperature sensor for the outdoor unit coil or solenoid valve.
+ Cause: Faulty outdoor unit motherboard; faulty outdoor unit coil temperature sensor; faulty outdoor unit solenoid valve; Loose sensor jack connection.
+ Solution: Install a new outdoor unit motherboard; replace the outdoor unit coil temperature sensor; replace the outdoor unit solenoid valve; reinsert the sensor jack.
