What does Haier error E1 mean?
E1 means the sensor in the indoor unit that measures room temperature is not giving a proper reading. Without it, the AC can't tell how cool the room is.
Why does code E1 appear?
- The sensor's plug has come loose from the board.
- The sensor or its wire is damaged.
- The indoor board is faulty.
What can you safely check for E1?
- Switch the power off for 5 minutes, then start the AC again.
- Check that no water is getting into the indoor unit.
Safety: never reach into an electrical panel, board, gas pipe or the inside of an inverter yourself. You can get a shock or release gas. This is a mistri's job.
When should you call a mistri?
If the code comes back, call a mistri. Changing the sensor means opening the indoor unit's cover and board.