Service Manual

Sensor shown fully

inserted into well

Sensor clip shown

installed properly

Service Procedure I

Thermostat Circuit Testing and Replacement (Continued)

Thermostat Sensor (Thermister)

Replacement Procedure

1. Position main power switch to OFF.

2. Disconnect (unplug) the water heater from 120

volt power source.

3. Unlatch and remove the top of the surround

cover from the top of the water heater.

4. Fold back the insulation just in front of the

burner to expose the temperature sensor (see

image at right).

5. Disconnect temperature sensor from harness

(see images at right).

6. Unclip the sensor from the well and pull the

sensor to remove, do NOT remove the well.

NOTE: Using a deep well socket will allow

room inside socket for sensor connector

and wires.

7. Install the new sensor completely into the well

and reinstall the sensor clip.

8. Fold the insulation back into place. Be sure

there are no wires in contact with the burner.

9. Restore 120 volt power supply and water supply

to the water heater, check and repair any leaks

found. Confirm proper operation following the

lighting instruction label or the lighting

instruction located in the Installation and

Operating Instruction Manual.

10. Replace the surround cover on the top of the

water heater.

WARNING

120 volt potential exposure. Isolate the appliance and

reconfirm power is disconnected using a multi-meter.

Insulation folded

back to expose

temperature sensor