Have HVAC Questions? Ask an HVAC Expert for Answers
Hi, I'm Tim and I'm an HVAC expert here to help answer your question(s). Please provide all the information I ask for since I'm not onsite. At the end of our dialog you will be asked to rate my service, but please wait until then and all your question(s) have been answered satisfactorily. Thanks for your business!
Does the unit have a blower door safety switch?
Have you measured voltage from incoming power to furnace to determine if it's a furnace problem or house power problem( circuit breaker, burned off wire, etc)?
Where did you test this? What are you reading?
No, I mean checking power at actual furnace with a voltmeter. Let's make sure furnace is getting 120 volts.
In order to help, we can't assume anything. If furnace is totally dead, I need a voltage measurement right at the unit where it comes in and supplies power to furnace. Other things to check, a blown fuse on the board, a bad circuit board (flip board over and look for burned areas). Also, if you can get me a full model number should I need to pull up a wiring diagram. Thanks.
Can you upload a clear picture of the wiring diagram to me here? Being 17 years old, it might be difficult to find now.
You really don't say what this unit is and no model number. Is this a forced air furnace?
Sorry, but without some of this basic information, I can't begin to help you troubleshoot the unit.
Did you still need help here?