Control Board Check - A.O. Smith BTH 120 Service And Parts Manual

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 ...
1 2 0 V A C is n o t p re s e n t
1 2 0 V A C is p re s e n t
R e a t t a c h p lu g t o C N 1 t e rm in a l.
A. O. Smith Water Products Company
Irving, Texas 2000©
TROUBLESHOOTING
STEP 3 - CONTROL BOARD CHECK
20
Volts
Service Handbook
Training Department