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Trane xl90 furnace tdc0808942a0 no power to ifc. They are…

Customer Question
Trane xl90 furnace tdc0808942a0...

Trane xl90 furnace tdc0808942a0 no power to ifc

Contractor's Assistant: Did you check the furnace's filters?

Yes they are new

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Submitted: 7 months ago.Category: HVAC
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Answered in 6 hours by:
12/16/2017
HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago
gotoman for ac
gotoman for ac, HVAC Technician
Category: HVAC
Satisfied Customers: 5,348
Experience: 51 years of experience install design and repair of all makes and models of AC
Verified

Sorry for wait. Check the fan board to see if there is a 5 or 3 amp auto type fuse.. It may be blown. Russ

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Customer reply replied 7 months ago
The fan runs when I turn it on manual.
Customer reply replied 7 months ago
Where is that located
HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

Euse will be located on fan board it is auto type fuse. Russ

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HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

Fuse located on furnace board. Russ

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HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

If the fan comes on you have power to furnace and should have power to board on L1 and L2. Does the ignition module have a red LED on. Does it flash a code. Do you have 110 between L1 and L2.

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Customer reply replied 7 months ago
strangest thing. I checked the voltage between l1 and l2 9v. The induction fan turns on the green light came on and it had a flame for a second then shout off. I am now back to the beginning with no led on at all. There is no wire hooked to L2
HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

Go from L1 to ground .You should get 115 volts. If you do bad board. Russ

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Customer reply replied 7 months ago
Yep brand new and bad. I had the same thing happen about 10 years ago. Ok thanks.
HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

You are welcome. Good work. I will open rate box for you. Just google that number on furnace board and several sites will come up. Russ

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HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

Need anymore help. Russ

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Customer reply replied 7 months ago
Not sure yet I have to get the part on Monday.
HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

Ok let me know. Russ

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Customer reply replied 7 months ago
Ok u changed it out same thing. 14 v from l1 to l2. L1 to ground is 115
Customer reply replied 7 months ago
I changed not u changed
HVAC Technician: gotoman for ac, HVAC Technician replied 7 months ago

The two power wires coming in Black L1 and white connect to L2 on board. Russ

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Customer reply replied 7 months ago
That's strange i took them off and put them on exactly as they were on the old one. Can you see the picture I uploaded?
Customer reply replied 7 months ago
L1 Is a red wire in this furnace can you see the picture?
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