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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22245
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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My Furnace will not start unless I turn the power off and then

Customer Question

My Furnace will not start unless I turn the power off and then back on again, any suggestions?
Submitted: 7 years ago.
Category: HVAC
Expert:  BillyHvac replied 7 years ago.

 

Good chance the furnace is faulting. What is the model number?

Customer: replied 7 years ago.
Model 394
Expert:  BillyHvac replied 7 years ago.

 

Thank you...

 

This unit covered a lot of series. Can you tell me if your unit lights with a glow ignitor or a spark pilot?

Customer: replied 7 years ago.
Spark Pilot, Could it be the diverter switch?

Expert:  BillyHvac replied 7 years ago.

 

So you turn switch off and on, then unit progresses and heats fine....satisfies thermostat, but then will not restart?

 

Is this the pilot with white yellow and green wires?

Customer: replied 7 years ago.
Correct.
Expert:  BillyHvac replied 7 years ago.
is this natural gas or LP
Customer: replied 7 years ago.
Natural Gas
Expert:  BillyHvac replied 7 years ago.

 

Can you tell me if this control is on your furnace?

 

Some had them while others didnt.

Customer: replied 7 years ago.
Which Control?
Customer: replied 7 years ago.
Yes.
Expert:  BillyHvac replied 7 years ago.

That control is your problem. It is a lockout timer.....but now it is not letting the unit fire up until power removed and restored.

 

 

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