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kmerchant1

02:04PM | 01/03/04
Member Since: 01/02/04
3 lifetime posts
Bvhvac
I recently replaced the blower on my old Lennox furnace. After doing so, it seemed to work ok, but I noticed the gas would ignite, the furnace would heat up, and when the blower kicked on, the gas would go out (normal) but then the digital display would flash "PF" and about 3 seconds later the display would go off, but the blower would continue blowing the hot air through the vents. A couple weeks went by, and then the furnace power went out, and it tripped the circuit braker. I flipped the circuit braker back on, and now I can't get power back to the furnace. What could be wrong? I pretty sure my wiring was correct. Thank you for your help.

kmerchant1

07:46AM | 01/04/04
Member Since: 01/02/04
3 lifetime posts
So what happens when there is control failure, and the power no longer comes on? What part went bad, and would need to be replaced?

Does anyone know where I could get the wiring specifications for my furnace (old Lennox) so I can verify my wiring is correct?

Thank you!!!

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