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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8164
Experience:  Furnace, A/C and heat pump specialist.
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I have a twinning error code on my Janitrol/Goodman

Customer Question

I have a twinning error code on my Janitrol/Goodman furnance. How do I fix it?
JA: How old is the appliance? Have you gotten error messages before?
Customer: Its at least 13 years old. I have never had this problem with it ever. This is the first year it has not fired up since I have lived here.
JA: Do you plan on doing the work yourself?
Customer: I would like to if possible.
JA: Anything else we should know to help you best?
Customer: I originally thought it may have been the flame sensor at first, so I did in fact replace that. But the problem still persist.
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

If getting a twinning error and this is a single furnace by itself, board is bad and will need to be replaced.

Customer: replied 9 months ago.
What about reversed polarity?

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