Transformer - State Water Heaters Utra-Force STC-077 Service Handbook

STEP 2 120 VAC TO TRANSFORMER
STEP 2: CHECK FOR 120 VAC TO TRANSFORMER FROM PIN 1 AND 2 ON CONTROL
BOARD CN4 TERMINAL.
Condition:
• Disconnect CN4 plug from control board.
• On/Off switch is on.
Check for 120 VAC between pin 1 and 2 at CN4 on the control board as illustrated above. Perform
this test with the CN4 plug disconnected and the On/Off switch turned on.
IF...
120 VAC is not present
120 VAC is present
State Water Heaters
Ashland City, Tennessee © 2004
S U F S E R V I C E
T R O U B L E S H O O T I N G

TRANSFORMER

THEN
check CN1 plug connection
replace control board if Step 1 has been performed and results were successful.
reconnect CN4 plug to control board, continue to Step 3.
19
H A N D B O O K
Technical Training Department
STC-077