Service Manual

Service Procedure X

Transformer Replacement

Transformer Replacement Procedure

1. Position main power switch to OFF.

2. Disconnect (unplug) water heater from

120 volt power source.

3. Unlatch and remove surround cover from top of water heater.

4. Disconnect primary leads (black and white) and secondary leads (blue and yellow) from the

transformer (connections are different sizes to prevent interchanging).

5. Remove the 2 nuts (7/16” nut driver) holding the transformer in place and remove transformer from

control board (see image below).

6. Install new transformer and secure in place with screws from step 5.

7. Reconnect primary and secondary wires to the transformer (leads are different sizes to prevent

interchanging).

8. Restore 120 volt power supply to water heater and confirm proper operation following the lighting

instructions on the lighting instruction label, or the lighting instructions located in the Installation and

Operating Manual.

9. 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 multimeter.

Blue &

Yellow wires

Black &

White wires