8F-00 — Abnormal increase outlet water temperature (DHW)

• Overheating of the heat exchanger
• Faulty temperature sensor
• Incorrect thermostat setting

Click steps to track your progress.

1. 1

   Check the DHW temperature settings in the control panel or app.

2. 2

   Ensure the unit is not overheating.

3. 3

   Verify the accuracy of the outlet water temperature sensor.

4. 4

   A technician may need to check the heat exchanger and controls.