Service Manual

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Service Procedure I
Thermostat Circuit Testing
and Replacement (Continued)
WARNING
DO NOT operate the water heater without verifying
that the overheating condition has been corrected.
Continued from previous page.
Condition: Water heater not operating.
Display shows error code 65 (high water
temperature, over 200 °F).
Once cause of overheating condition has been
diagnosed and corrected, the control may be reset.
• Reconnect and switch ON power to the water heater.
• Enter service mode on the water heater display (see image below).
• Press button under “Lockout Reset” and hold for 3 seconds.
• Set thermostat to the desired setting.
• Water heater will start.
• Monitor temperatures for one complete heating cycle making sure
the maximum tank temperature remains well below 200 °F.
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