My model 376CAV downflow furnace fails to provide heat. When the
thermostat calls for heat the main blower comes on immediately, but the
Draft Inducer blower does not come on, nor does the Hot surface ignitor
come on. I have replaced the control circuit board, yet the unit behaves
the same way.
Does anyone know what might be at fault?
IIRC there is a manual limit on that unit...remove the blower door, and look
for the bright yellow sticker that says manual reset. Press the dark red
button on it and then find out why in hell it tripped.
Now, yours may not have it...I cant see it and I despise Carrier/ICP
products. I just went down this same road with a customer that has had
NOTHING but problems with hers...and as it turns out, her bf had rewired
half the unit wrong until she called...after going back, rewiring it back
correctly, that was the only problem she had...that switch had failed and
replacement was all she needed.
If you cant find it, or yours does not have one, best advice would be to
call someone that knows where to start looking on the unit, and get you some
The standard home owner reply to any furnace problem is to replace the
Actually, wtih blower instant on and no inducer, it sure sound like
thermostat wiring problems to me.
What did that board cost you? Sounds like you're throwing parts at it.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.