Have HVAC Questions? Ask an HVAC Expert for Answers
Hello Carl, if you can use the paper clip icon at the right end of the tool bar above your dialog box to send me a close up photo of the wiring diagram glued inside the furnace front panel, I can mark it up with trouble shooting directions.
The photo needs be taken squarely from straight on, very well lit, and focused. If you can include a photo of the terminal strip inside the furnace where the thermostat wires land that will help a lot also.
We can go from there.
Thanks for the photo's
Hello again Carl, There are only relays and sequencers in the control circuit as regards ***** ***** coming on and staying on, so its a pretty good guess that is one or other of those... there are 5 or 6 depending on the model you have.
The 3 photo's you sent were of the 'blend air' system, that is entirely separate from the blower controls (sequencers and relays).. that diagram is glued inside a cover about as wide as the furnace ... it is much more complex than the blend air diagram.
Your tests proved that you have 24volt control power however, when you get the other diagram to me I can mark it up with trouble shooting directions.
Hello again Carl, only slides 2, 3 and 5 showed up
either that or Im going blind
Thanks for staying in touch, you have a loose or corroded wire connection somewhere in the area, wiggle the wires gingerly ONE at a time, that often locates the culprit.
If you rate my work so far positively the company pays me half of your deposit, its how I earn a living, In exchange I will leave the question open to you for any follow up that will probably need later,