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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My Bryant air handler won't turn on the fan. I changed the

Customer Question

My Bryant air handler won't turn on the fan. I changed the thermostat and still not working
Double checked wiring and programming
Any words of wisdom before calling repairman?
Submitted: 10 months ago.
Category: HVAC
Expert:  HVAC Guru replied 10 months ago.
Hello and thanks for using this service, if you have been waiting do not worry or get upset. I am HVAC Guru an extremely experienced tech onthe site and I try to get to as many customers as I can. I just picked up your question now. Answer: Can you get at the thermostat wiring at the air handler on the board?
Customer: replied 10 months ago.
I took off the front panel of the Bryant unit and can see some wiring, but I don't see a computer board. Lots of wiring and a transformer . Is the board behind another panel?
Customer: replied 10 months ago.
I checked the manual. This unit doesn't have a PC board, the control board functions are now integrated into the blower motor. I also checked the fuse on the wiring harness and it's good
What now ?
Customer: replied 10 months ago.
I am checking to see if you received my last text and can offer me any solutions?
Thanks
Expert:  HVAC Guru replied 10 months ago.
You need to get at the thermostat wiring to the air handler and jumper across the R and G wires with a jumper wire, see if the fan comes on.
Customer: replied 10 months ago.
This is what I am looking at, which part is the thermostat? See pic
Expert:  HVAC Guru replied 10 months ago.
Yes your red and green wires are wire nutted to the wires you need to jumper together
Customer: replied 10 months ago.
Ok got it ,run a jumper across reg to green wire nut , the grey wire is also connected to the green so leave that attached as well?
Customer: replied 10 months ago.
I made connection see pic, fan did not kick on
Customer: replied 10 months ago.
Any thoughts?
Expert:  HVAC Guru replied 10 months ago.
Is there any safety switches on the panel you had to remove that has to be closed
Customer: replied 10 months ago.
No there are no safety switches
Expert:  HVAC Guru replied 10 months ago.
OK then can you check to see if you lost your 24 volt supply with a meter?