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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 bought my home in March 2015 & the Lennox furnace "Series

Customer Question

I bought my home in March 2015 & the Lennox furnace "Series G71MPP" (variable capacity gas furnace) was installed in Oct 2009.
The problem now is a red light flashing on the front of the furnace. It flashes 2 then space 4, and repeats.
A service man is coming out Monday afternoon (11/16) but can I use the furnace in the
meantime? Can you tell me what the problem is?
Jean
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Jean does the furnace actually light and blow warm air?

Customer: replied 1 year ago.
Customer: replied 1 year ago.
No thank you.
Customer: replied 1 year ago.
No, I do not want to talk to you. Please just give me an answer.
Expert:  airheatman replied 1 year ago.

Ignore the phone call offer, that is an automated service we can work here without phone call. Take a close look and see if we get 3 numbers rather that just the two, like 124 or 224

Customer: replied 1 year ago.
NO NO & NO
Customer: replied 1 year ago.
Wait a minute as I have to turn the furnace on & go out to the garage.
Expert:  airheatman replied 1 year ago.

Ok there is no 24 error code in the troubleshooting guide. What is the reason for calling a technician to come in on Monday?

Customer: replied 1 year ago.
H2 ?86E The ? mark looks like an unsidedown A
Expert:  airheatman replied 1 year ago.

Those numbers just sound like we are in second stage heat mode and possibly cfms unit is moving.What is the reason for calling a technician to come in on Monday?