Water Heater User Manual

PDX SERVICE PROCEDURE V

Blower Temperature Switch Testing

and Replacement

Blower Temperature Switch

Replacement.

WARNING

120 volt potential exposure. Use caution

to avoid personal injury.

Step 1. Position gas control power switch to the “OFF” position

and unplug heater from wall outlet.

Step 2. Remove the three screws (Phillips screw driver) from the

control access cover on blower and remove cover.

(see photo 17)

Step 3. Locate blower temperature switch (see photo 18)

Step 4. Disconnect red and yellow wire leads from switch.

Step 5. With an appropriate tool such as side cutters, snip the

retaining lug from the blower housing to allow removal of

temperature switch (see photo 19).

Step 6. Remove switch from blower housing.

Step 7. Install new switch. Be sure switch is properly seated in

mounting area.

Step 8. Reconnect red and yellows wires to new switch. Wires are

interchangeable with either terminal.

Step 9. Position gas control power switch to the “ON” position

and verify proper heater operation.

Step 10. Replace control access cover from step 2.

Blower temperature

switch location

Snip retaining lug

from blower housing

Page 23

PDX Series