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Rick Mather
Rick Mather, HVAC Technician
Category: HVAC
Satisfied Customers: 3634
Experience:  35 years experience, HVAC
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Older Sears furnace. Has newer gas valve, new thermostat,

Resolved Question:

Older Sears furnace. Has newer gas valve, new thermostat, pilot light is on. Burner won't come on.
Submitted: 5 years ago.
Category: HVAC
Expert:  Rick Mather replied 5 years ago.
Is all the power on to the furnace including the emergency switches and service switches
Customer: replied 5 years ago.
Yes, all power is on.
Expert:  Rick Mather replied 5 years ago.
If you take thermostat wire off from the back and jumper the one on R and touch it to the W terminal heat should start if it does replace thermostat
Customer: replied 5 years ago.
I tried and it didn't work.
Expert:  Rick Mather replied 5 years ago.
Well maybe your transformer providing the 24 vac is toast. Check for 24 vac on R to W
Customer: replied 5 years ago.
It fluctuates between 0 and 20. It doesn't go to 24.
Expert:  Rick Mather replied 5 years ago.
Well it should be 24 vac or better you need to find out why it not steady voltage
Customer: replied 5 years ago.
I will put a new transformer on it and will get back to you if it doesn't solve the problem.
Expert:  Rick Mather replied 5 years ago.
OK wait to here from you
Rick Mather, HVAC Technician
Category: HVAC
Satisfied Customers: 3634
Experience: 35 years experience, HVAC
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