S U F S E R V I C E H A N D B O O K
T R O U B L E S H O O T I N G
TROUBLESHOOTING
PRE-SERVICE TIPS
CHECK THAT:
•Insure 120 VAC power supply has correct polarity — check neutral (white) wire to ground with volt meter. It should read “0” volts.
•Tank is full of water
•Exhaust and intake vent do not exceed allowable limits
•All plugs into boards are secure
•Condensate hose is drained and open
•Proper (natural or propane) gas is supplied
120 VAC TO CONTROL
STEP 1
120 VAC TO CONTROL BOARD
STEP 1: CHECK FOR 120 VAC TO CONTROL BOARD CN1 TERMINAL. Condition:
•Disconnect plug from CN1 terminal.
•On/Off switch is on.
Check for 120 VAC black wire terminal white wire on plug.
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120 | VAC is not present | check On/Off switch, turn switch on, replace On/Off switch if defective, restore | |
power to the water heater. | |||
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120 | VAC is present | reconnect CN1 plug, continue to Step 2. | |
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Technical Training Department | 18 | State Water Heaters |
Ashland City, Tennessee © 2004 |
