To Next Page

To Previous Page

110 Indoor / 110 Outdoor Service Manual

Ver. 1.01

CONFIDENTIAL

12-2. Verifying functionality of computer board

How to check if the computer board works properly

1. Check the power ON-OFF switch of the water heater. The factory setting is ON position.

2. Turn on the power supply of the water heater.

3. If the remote is installed: Turn on the ON/OFF button of the remote controller.

If no remote is installed: Wait a few seconds.

4. The red LED on the computer board will light up for two seconds.

Red light

Power ON-OFF switch

A.O. Smith T-KJr2-OS User Manual

Questions and Answers: