Step 9: Iid Module Test - State Water Heaters SBD71120 Service Handbook

STEP 9: IID MODULE TEST

CONDITION:
• Pilot Flame Noted, No Sparking, No Main Burner.
Using a multimeter, test for 24 VAC between terminal MV on the IID and 24V (GND).
IF
24 VAC is not present:
24 VAC is present:
Servicing should only be performed by a Qualified Service Technician
THEN
• Replace the IID module. Check the gas valve
before applying power to replacement module.
• Check the gas valve.
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