Eco check, Step 4 24 vac to eco – State Industries Utra-Force STC-077 User Manual

Page 22

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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

State Water Heaters

Technical Training Department

Ashland City, Tennessee © 2004

21

STC-077

ECO CHECK

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.

STEP 4

24 VAC TO ECO

IF…

THEN

24 VAC is not present

replace the control board if Steps 1, 2, and 3 have been performed and the results
were successful.

24 VAC is present

continue to Step 5.

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