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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Lets start over please like i said my furnance is 23 years

Customer Question

lets start over please like i said my furnance is 23 years old .its a ruud the model number is ***** .it will not fire
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Does the vent motor(Inducer) start on call for heat? Reply only on this question.

Customer: replied 1 year ago.
the fan motor starts and runs but ,but igniter will not fire the tecnition i had here said the senser on blower motor he said he thought was bad ,he taped on it it worked for a couple days ,but stopped.the part number is ***** n/c limit switch,l105-10f
Customer: replied 1 year ago.
will this couse the problem
Expert:  airheatman replied 1 year ago.

Lets stay on tract here. First question is about the small fan motor where vent connects.Does it come on?

Customer: replied 1 year ago.
Expert:  Rick replied 1 year ago.

If you still need help we can pick this up from here after you rate the question with the wiring diagram favorably

Customer: replied 1 year ago.
Rick you get my other question will the limit switch couse this the one on the blower motor