Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner
I have a Carrier Infinity 96 gas furnace in my (new to me) home. It has been working perfectly up until tonight. The fan is blowing but the air is cool. Any idea what would cause the sudden lost of heat? There is a glass circle cover behind the cover door were I see a green ligt and a blinking yellow light. DOes this mean anything to anyone out there?
That means that the furnace is throwing a code to trouble shoot whats wrong. Most of the time, furnaces will have a code list on the inside of the door cover to explain what each code means, some of them don't. Its hard to say what it could be without knowing where to start. However, answering a few questions with someone knowledgeable over the phone if possible could help speed things up, but it would involve you being at the furnace and seeing what happens before it throws the code. If you do have a code list, this would help tremendously.
Posted on Feb 03, 2010
Testimonial: "Great Solution. I spoke with the installer of the unit this morning and went through everyting you mentioned. It was as simple as a loose connection."
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Posted on Jan 02, 2017
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EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST DIGIT DETERMINED BY THE
NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY THE NUMBER OF LONG FLASHES.
43 LOW-HEAT PRESSURE SWITCH OPEN WHILE MEDIUM-HEAT PRESSURE SWITCH IS CLOSED - Check for:
- Low inlet gas pressure (if LGPS used).
- Plugged condensate drain.
- Improper pressure switch wiring.
- Water in vent piping, possible sagging pipe.
- Stuck open low-heat pressure switch.
- Disconnected or obstructed pressure tubing.
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