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
ECO CHECK
STEP 4
24 VAC TO ECO
STEP 4: CHECK FOR 24 VAC BETWEEN PIN 4 ON CONTROL BOARD TERMINAL CN3 AND GROUND.
Condition:
•Disconnect CN3 plug from control board.
•On/Off switch is on.
Check for 24 VAC between pin 4 of the CN3 terminal on the control board and ground.
IF… | THEN | ||
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24 | VAC is not present | replace the control board if Steps 1, 2, and 3 have been performed and the results | |
were successful. | |||
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24 | VAC is present | continue to Step 5. | |
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State Water Heaters | 21 | Technical Training Department |
Ashland City, Tennessee © 2004 |
