Error Code 88 - Maintenance required before clearing

What does 88 mean?

This code indicates that maintenance, such as flushing the heat exchanger or replacing a filter, is recommended before the error can be cleared. The water heater will not operate normally until this maintenance is performed and the code is reset.

• Heat exchanger requires flushing
• Water treatment filter needs replacement (if applicable)

Click steps to track your progress.

1. 1

   Perform recommended maintenance activities (flushing, filter replacement).

2. 2

   Turn on the remote control.

3. 3

   Turn off the gas and water supply to the water heater.

4. 4

   Press the DOWN adjustment button until the lowest temperature is displayed.

5. 5

   Press and hold both the DOWN and UP adjustment buttons for 5 to 10 seconds.

6. 6

   Turn the gas and water supply back on.