Service Manual

ECO Defender Series

Resettable Thermal Switch Testing and Replacement (cont.)

Step 1.

Rotate gas control knob to the

“OFF” position.

Remove outer jacket door.

Disconnect wire leads from

resettable thermal switch.

Remove (2) ¼” hex drive screws

from the manifold mount.

Remove resettable thermal switch from

manifold mount (Phillips screw driver).

Place new resettable thermal switch in place. Be sure contact surface

of resettable thermal switch and manifold mount are free of any debris.

Secure resettable thermal switch into place using screws from step 6.

DO NOT OVER TIGHTEN SCREWS.

Reconnect wire leads from gas valve and thermopile to resettable

thermal switch.

Step 2.

Step 3.

Step 4.

Step 5.

Step 6.

Step 7.

Note: Wire terminations are interchangeable with either resettable

thermal switch connection.

Step 8.

Step 9.

Replace outer jacket door.

To resume operation, follow the instructions located on the lighting

instruction label or the lighting instruction located in the installation and

operation manual.