APPENDICES
79
SERVICE PROCEDURE D24-I
Thermostat Circuit Testing
Condition: Water Heater Not Operating
Display shows error code “65”
High Water Temperature (over 200 deg. F)
Continued
WARNING!
Do not operate water heater without verifying that the overheating condition has been corrected.
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
illustration)
Press button under “Lockout Reset” and hold for 3
seconds.
Set thermostat to the desired setting.
Water heater should start.
Monitor temperatures for one complete heating cycle
making sure the maximum tank temperature remains well
below 200 deg. F
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