what does a code 31 mean on a payne forced hot air furnace the furnace is 4 years old
what does a code 31 mean on a payne forced hot air furnace the furnace is 4 year
Mar 03, 2014
4 Replies
What is the model number of the furnance?
Code 31 is a air pressure switch fault code. I would start by checking your vent pipes outside and see if they are blocked with (snow or debri)
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