A.O. Smith BTH 150 - Control Board Check

A. O. Smith Water Products Company Service Handbook
Irving, Texas 2000© Training Department
20
STEP 3. 120 VAC SUPPLIED
TO CONTROL BOARD - CN1
CONNECTION
• Disconnect plug from CN1
terminal
• Power switch "On" - 120 VAC
indicator light should be "On"
Check for 120 VAC black wire
terminal to white wire terminal
on plug.
IF …
120 VAC is not present
120 VAC is present
Reattach plug to CN 1 terminal.
STEP 3 - CONTROL BOARD CHECK
TROUBLESHOOTING
Volts