Every brand and unit has it's own coding. A solid red light might mean two things - that the board is normal and it's simply waiting for a heat call or that the burner is running but the unit is not getting a call for heat. Thanks for your straight-forward troubleshooting tips - they are VERY helpful. If not, check for flue blockage and listen to inducer to see if sounding slow or something in there. Question: On a carrier furnace, what does four green flashing lights and two yellow flashing lights indicate? Emily is a copywriter with over five years of experience in crafting content for the home renovation and remodeling industry. But the main problem with such a furnace is that the unit will remain energized, even when it is turned off. If you don't already, it's just a good idea to keep extra fuses on hand since this issue is so common. This will be the third year we will have replaced the blower. Watch and listen to your furnace as it begins to cycle. Nothing! This means the gas valve is stimulated with no heat, usually caused by a gas valve wiring issue. A voltmeter and knowledge of what you're doing with it is important. Definitely an issue though since if there's an odor like an electrical burn then something is shorting out and I'd have a tech come sooner than later. Testing would need to be done to determine this unless you just roll the dice and replace one then the other or both. The ignitor does not appear to light whatsoever, I hear no clicking, smell no gas. Sorry I can't be of much more help based on the information you've provided. You can also try tightening the wiring and checking the flue for any blockages. Only use the jumper wire to see if the thermostat is faulty. I reset it manually from the breaker box. Can I connect it without the harness and splice the wires? Answer: I'm sorry but I can't answer this because Honeywell doesn't make furnaces and this would be in regard to what I believe is a zoning system which I cannot troubleshoot over the net. Ian - Check your filter and if the a/c coil is clogged you could be trapping too much heat in the plenum. She loves house projects, whether it be painting a room or tweaking small design elements to transform a space. Understanding the red blinking light on your furnace will help you navigate through the following possible issues that have a possibly simple solution. If not, could be gas valve. I just bought the house and the a/c works, but not the heater. Goodman HVAC Control Board Solid Red Light? - DIY Home Improvement Forum If the first LED light is Off, and the second is exhibiting a slow flash, theres a problem with the pressure switch that usually cant be repaired. If the wires look corroded, then you would have to replace the thermostat. I have no power going to the circuit board. Best solid red light on furnace circuit board of 2023 from brand: Carrier, Nordyne Miller, AmStd, Luxaire, Dinosaur Electronics, Nordyne, OEM Replm for Lennox, ICM Controls, ICM, YUNGUI, White-Rodgers, Armstrong Air, ClimaTek, Suburban, OEM Rplm for Rheem, BuyPlastic, Trane, Goodman, York, OEM Replm for Weather King, Rheem Ruud Weather King My ac wasnt working and my husband put in basically all new parts, now the thermostat wont come on and nothing happens. When the tech arrived he saw the error and tested the switch. I've replaced the thermostat (which only has a red and white wire connected to it) and the flame sensor. These pins/connectors will sometimes get loose and cause this type of issue. The cost of remedying the issue could be anywhere from $150 to over $500. Two LED flashes. Being brand new, I would certainly call the installer and ask them to come figure out and fix the issue. We have a natural gas forced air furnace-17 years old.
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