What does E70 mean?

This is a reserved error code indicating a general abnormality with the DHW (Domestic Hot Water) I/O PCB.

• An unspecified fault with the DHW I/O PCB.
• A temporary electrical glitch affecting the board.
• Intermittent communication issues.

Click steps to track your progress.

1. 1

   Turn off the main power to the Haier unit at the circuit breaker.

2. 2

   Wait for at least 30 seconds.

3. 3

   Restore power to the unit and observe if the error clears.

4. 4

   If the error persists, contact a qualified service technician to diagnose the DHW I/O PCB.