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Service Procedure I:
Thermostat Circuit Testing and Replacement
Do not operate water heater without verifying
that the overheating condition has been
corrected.
WARNING
Condition: Water heater not operating. Display
shows error code “80” high water temperature
(over 200 °F) (continued from previous page).
Once cause of overheating condition has been diagnosed
and corrected, the control may be reset.
x
Reconnect and switch on power to the water heater.
x
Press button under “Reset” and hold for 3 seconds.
x
Set thermostat to the desired setting.
x
Water heater will start.
x
Monitor temperatures for one complete heating cycle making sure
the maximum tank temperature remains below 200 °F.
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