A200 - High water temp! [ECO] Call Tech Service

What does A200 mean?

The ECO (Energy Cut Off) high-temperature limit has tripped, disabling the heater due to excessively high water temperature. This requires service.

• ECO tripped due to high water temperature
• Heating element issue
• Thermostat or control board issue

Click steps to track your progress.

1. 1

   Disconnect power to the unit.

2. 2

   Check the resistance between the heating elements and ground.

3. 3

   Check the resistance of the thermistors.

4. 4

   If the elements and thermistors check out, the control board likely needs replacement.