E4

Indoor EEPROM Error

Description

The EEPROM memory chip on the indoor unit's control board, which stores configuration data, has failed or lost its data.

Appliance Error Codes Details

Error Code
E4
Error Name
Indoor EEPROM Error
Appliance Type
air_conditioner
Brand
Haier
Severity
high

Additional Troubleshooting

1. Turn off the air conditioner at the power supply for a few minutes and restart
2. If the error persists, this indicates a hardware fault on the control board
3. Contact a service technician to test or replace the indoor control board

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Author: Pavel Volkov
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