I have a carrier furnace, it worked just fine last winter,and just fine this summer. but now it does not blow heat , there is a LED that flash code 31 if im reading it correct, but what does that mean.
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Carrier (NO HEAT)
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Code 31 means pressure switch fault. Is the inducer motor running? could be blocked intake or exhaust vent, plugged pressure switch tubing or where the tubing connects to the collector box or condensate trap could be plugged. Many reasons as to why you are getting a fault. If you are not comfortable checking this out, call a pro...
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