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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 7775
Experience:  Furnace, A/C and heat pump specialist.
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I have a trane variable speed air handler. The fan does not

Customer Question

I have a trane variable speed air handler. The fan does not come on. The compressor comes on and ices up the coiles on air handler. The fan light is green on the control board but the cfn light is not lite. What do you think the issue may be?
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.
Hello. My name is ***** ***** I'll do my best to help. Let's get started and see what we can do.Most likely the bell control on the end of the motor. How old is the unit? Possibly under warranty. THis bell controller is pretty expensive.
Troubleshooting requires a special tester as the motor is high voltage powered, but low voltage or dc voltage controlled.
http://i.imgur.com/TnvwGV2.png
http://i.imgur.com/J7C6DhX.jpg
If not under warranty and you choose to buy the tester (About 80 bucks), I will be glad to guide you in troubleshooting.

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