Step 1. Rotate the knob of combination thermostat/gas valve to the “OFF” position.
Step 2. Remove the outer jacket door.
Step 3. Disconnect the wire leads from the resettable thermal switch.
Step 4. Remove the resettable thermal switch from the inner door (Phillips screwdriver).

Step 5. Put new resettable thermal switch in place. Be sure contact surface of resettable thermal switch and inner door are free of any debris. Secure resettable thermal switch into place using screws from Step 4. DO NOT OVER TIGHTEN SCREWS.
Step 6. Reconnect wire leads from combination thermostat/gas valve to resettable thermal switch.
NOTE: Wire terminations are interchangeable with either resettable thermal switch connection.
Step 7. Replace the outer jacket door.
Step 8.To resume operation, follow the instructions located on the lighting instruction label or the lighting instruction located in the Installation and Operation Manual.