A. O. Smith Water Products Company Service Handbook
Irving, Texas 2000
©
Training Department
21
TROUBLESHOOTING
STEP 4 - TRANSFORMER TEST
STEP 4. 120 VAC SUPPLIED TO 24 VAC TRANSFORMER CN4.
• Disconnect CN 4 plug from board
Check for 120 VAC between the black terminal connect and white terminal connect on the control board.
IF… THEN
check CN 1
replace cont
120 VAC is present go to Step 5
Reconnect the plug to CN 4 terminal.
120 VAC is not present
To Next Page
Loading...
