How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Rick Mather Your Own Question
Rick Mather
Rick Mather, HVAC Technician
Category: HVAC
Satisfied Customers: 3634
Experience:  35 years experience, HVAC
Type Your HVAC Question Here...
Rick Mather is online now
A new question is answered every 9 seconds

Older Sears furnace. Has newer gas valve, new thermostat,

This answer was rated:

Older Sears furnace. Has newer gas valve, new thermostat, pilot light is on. Burner won't come on.
Is all the power on to the furnace including the emergency switches and service switches
Customer: replied 7 years ago.
Yes, all power is on.
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 7 years ago.
I tried and it didn't work.
Well maybe your transformer providing the 24 vac is toast. Check for 24 vac on R to W
Customer: replied 7 years ago.
It fluctuates between 0 and 20. It doesn't go to 24.
Well it should be 24 vac or better you need to find out why it not steady voltage
Customer: replied 7 years ago.
I will put a new transformer on it and will get back to you if it doesn't solve the problem.
OK wait to here from you
Rick Mather and other HVAC Specialists are ready to help you

Related HVAC Questions