4hw.com.cn: some users of Haier air conditioner may see the word E1 on the air conditioner display screen. What do you mean? What if E1 appears?
The cause of E1 in Haier air conditioner
Haier hanging air conditioner
If there are E1 fault codes such as fixed frequency and variable frequency hang up with code display, fixed frequency air conditioner, one drag two models, etc., it may be caused by the failure of indoor ambient temperature sensor.
Maintenance method
1. First, check whether the connector is secure.
2. Check the indoor ambient temperature sensor for a short or open circuit.
3. Test the resistance of the sensor to see if it is out of normal value.
4. Replace the damaged sensor.
5. Check the electrical components of the sensor sampling circuit for damage.
Haier cabinet air conditioner
If the frequency conversion cabinet air conditioner has E1 fault, it is generally caused by overheat, overcurrent, short circuit and other reasons of the power module. You can check whether the power supply voltage is too low, whether the filter screen of the indoor unit is dirty, and whether there are obstacles on the surface of the external unit to block the normal heat dissipation.
Some users of Haier air conditioner may appear the word E1 on the air conditioner display. What does this mean? What if E1 appears?
Haier's fault code of variable frequency air conditioner
E1: power module overheating, overcurrent, short circuit
E2: the induced current of current sensor is too small
E4: press temperature sensor temperature exceeds 120 ℃ during heating
E5: over current protection
E6: outdoor temperature sensor failure
E7: outdoor coil sensor failure
EA: power supply over and under voltage
EC: protection when the temperature of outdoor heat exchange sensor exceeds 70 ℃
EE: error in reading EEPROM data by MCU
F1: room temperature sensor failure
F2: indoor coil sensor failure
F4: indoor coil sensor over 72 ℃ protection during heating
F5: protection of indoor coil temperature sensor below 0 ℃ during refrigeration
F7: communication failure between indoor main board and control panel