If when you disconnect the jumper from R to W at the circuit board, the furnace wants to start tuning on/off randomly, I would also make sure all the wiring is good from the furnace to the thermostat, and if it is good, replace the thermostat. I have problem with bryant furnace mod#379CAV036070AGJA just to call for heat the board display code #12 (HK42FZ011) so we wait some time and after that the board run a perfect cycle,run inducer,fire … read more I will do that, could you please tell me where that sensor is? 03:52. I have a code 33 on a payne furnace. Furnace Error Code 12 for Carrier Bryant and Payne - YouTube It has a round black wheel on the front of it. soory may have gave you bad info. Hello! Yup that’s spinning freely and it kicks on. It's a bryant model #315aav048090 series b system the burners come on foe about a min. Code 12 simply means that there was a call for heat when the power was turned on to the furnace. Continuous light on means you have power, but the thermostat is not calling for heating. Ok, then this is a venting issue. This expert is wonderful. Any info would be great. I have a Carrier Weathermaker 9200. If everything is clear, then you will need a manometer to check how many inches of water column the inducer is pulling. Call 4 heat. RED LED2 ON: The microprocessor has malfunctioned. When I run a component test, the inducer motor comes on, sometimes for only a second, sometimes for … I liked that I could ask additional questions and get answered in a very short turn around. Certified HVAC Universal Technician,Lic plumbing contractor, 28 yrs exp, i have been an A/C tech for the past 30 Years. It is flashing error code 33, then after 5 minutes changes to 31. Ok, so I looked in the owners manual and it says "Low-voltage fuse is open- check for short in low-voltage wiring including thermostat leads shorting to duckwork or furnace cabinet. I ran into the same problem last year this time and the installer said there was a manual reset for a limit switch. Wonderful service, prompt, efficient, and accurate. Compare that to the rating on the pressure switch......if the number is ***** than what the pressure switch has on it, then the pressure switch is bad and needs to be replaced. Perfect! Thank you for all your help. It's a forced hot air, but is blowing cold air. All of a sudden, there was, Hello, I am having trouble with my furnace. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. 11 possible causes and potential solutions . Let me check code 31.....stand by. Please help. I have a payne furnace PG9MAA. I couldn't be more satisfied! See if when you try and turn the black wheel if it is stuck or moving freely? I have a Bryant CAV395024070 furnace that's taking a code 31. With the pressure switch jumpered for this test, and this test only, the furnace should stay running. I have a Bryant 350MAV gas furnace. Thanks. Also, have you rest any switches that look like the one pictured above? Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit. I have been reading through the manual that came with the unit and I am wondering if my installer could have set up the continuous fan switches wrong. The only model number I could find on the unit was CK5AXA036017AAAA To reset: Put setup switch "SW-1" in the "ON" position nad jumper thermostat terminals "R", "W/Wl" and "Y/Y2" simultaneously … The #1 question asked by NEW MEMBERS. So switched power off then on it sends the code 12 for about 60 seconds then kicks on for a few minutes. 192,638. Ok, so if you rest the furnace on/off switch on the side of the furnace, does the inducer motor turn on? Does the furnace stay on then? Thank you so much for taking your time and knowledge to support my concerns. Participate in over 40 different forums and search/browse from nearly 3 million posts. Carrier/Bryant blower on after power up code 12. Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com. While the A/C CFM selection must be set according to the tonnage of the A/C system, it has no impact on heating CFM. I've started running the AC during the day/night but the kids complain about being cold in the mornings so I've tried to run the heat for a bit. Make sure these switches around the burner box are not tripped as well. Did the recycle thing. Got it well guess I gotta go get one of thoseif I’m gone for a while how I get back in contact with you? If you are able to find something in your venting, such as animal, snow, ice, etc., and this fixes the problem, then you still have to address your thermostat, which also seems to be working intermittently. Featured Video. thank you, Hello. changed the filter. Can you jumper the R terminal to the W terminal on the circuit board and keep the blower door switch depressed at the same time to override the thermostat? Yes, look at the diagram above. went to increase temp while stat was in heating mode but not running. I have a Bryant Plus90 350MAV Series A furnace that was installed in the early 90's.