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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a Trane XE90 and fan stopped running. We have it on

Customer Question

I have a Trane XE90 and fan stopped running. We have it on all of the time, mostly. There is no light blinking on the board of the furnace. The digital thermostat is still on, though, while the door button is pushed in.
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: Larger
JA: Do you plan on doing the work yourself?
Customer: Probably
JA: Anything else we should know to help you best?
Customer: The run capacitor for the fan has been newly replaced.
Submitted: 1 month ago.
Category: HVAC
Expert:  HVAC Guru replied 1 month ago.

Hello, one minute while I get some information together.

Expert:  HVAC Guru replied 1 month ago.

Can you try to jumper the R to the G thermostat connections at the board in the unit to see if the blower runs?

Customer: replied 1 month ago.
Ok. Gimme a min.
Expert:  HVAC Guru replied 1 month ago.

ok no problem just make sure you have the safety switch depressed hen you have the panel off.

Customer: replied 1 month ago.
Put the 2 wires together. Nothing.
Customer: replied 1 month ago.
There is some buzzing when I move any of the wire bundles to access really anything.
Customer: replied 1 month ago.
Safety switch is taped down, btw.
Expert:  HVAC Guru replied 1 month ago.

You have to jumper out the connections on the board not the wires

Customer: replied 1 month ago.
My apologies. I'm in the middle of 3 other projects right now. I know better. 1 sec.
Customer: replied 1 month ago.
Nothing. No change.
Expert:  HVAC Guru replied 1 month ago.

OK does anything light up on the board?

Customer: replied 1 month ago.
No board lights.
Expert:  HVAC Guru replied 1 month ago.

OK check the fuse on the board. There should be a slot fuse on the board.

Customer: replied 1 month ago.
The fuse checks out. It is ok.
Expert:  HVAC Guru replied 1 month ago.

OK then check for power to the unit either you lost power to the unit or possibly the board is bad.

Customer: replied 1 month ago.
I'm getting 120V and 24V at the transformer. Power is on, power is flowing.
Expert:  HVAC Guru replied 1 month ago.

Do you have 24 volts at the board if so do you have a condensate pump?

Customer: replied 1 month ago.
24 V on the board. No condensate pump as far as I know. We have recently moved in and this is the first I've had to mess with this HVAC.
Customer: replied 1 month ago.
Could you tell me where it would be connected or what it mat look like? My old HVAC did not have one.
Expert:  HVAC Guru replied 1 month ago.

Follow the drain line from the AC coil on the furnace it would go to the pump if you have one

Customer: replied 1 month ago.
No pump so it looks. I replaced the board and the fan kicked on right away. I'm getting 6 blinks on the LED and the heat won't turn on.

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