Goodman a/c works, heater will work fine then fan will stop
I had this Goodman heat pump installed almost 3 years ago and no one has been able to fix it. In the summer, the a/c works perfectly. When the weather turns cold (this week in South Carolina), the heater will work until the house heats up close to the thermostat setting (72 degrees, although I have tried anywhere from 65 to 78 degrees, hoping that is the problem). Then the inside air will stop and I can hear the (I assume) compressor humming loudly outside. This will continue for up to half an hour, at which point I turn the thermostat to off. Also, when I turn the fan to on, it doesn't come on. I have also learned that, when the above problem happens, I can turn the fan to on and then immediately back to auto, and I'll get heat blowing inside the house again. Help! I'm a single mother and can't afford to continue supporting my local HVAC repairmen.
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Re: Goodman a/c works, heater will work fine then fan...
You have a circuit board acting up. Try keeping the fan in the "On" position. It will keep the blower on all the time but it may work. There is a built-in delay not allowing the unit to come on after you reset it with the thermostat, wait three minutes or so to see if it comes back on. I still suspect a bad circuit board.
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c is your common, u only use it if you have ac, humidifier, or u use 24 volts for t- stat, follow the common wire and see what it feeds u do not net it for heat, could be ur ac or humidifier has a short in it
It really depends on the type of system you have. You will either have a furnace, high efficiency furnace, heat pump system, heat pump with gas or electric back up heat. All these systems operate differently and the problem that you are having could be caused by multiple issues, depending on which system it is. More info will be greatly appreciated. Make sure to check all filters and air flow first before going any further. The system could be over heating and tripping a limit, causing the system to stop producing heat until the unit has cooled back down.
It sounds like you got a tough one there.When you say the blower starts up and then the igniter comes on are you refering to induced draft motor or main blower. The proper sequence is for the thermostat to call for heat at which point the induced draft motor should come on and run for 30-45 seconds,then the igniter should heat up for a few seconds then gas valve should open and main burner should light. After limit switch reaches set point for fan on ,blower should come on till after heat has reached thermostat setting then burner should go out, and blower run until fan off setting is reached on limit switch. If your furnace is not following this sequence and then not always doing the same thing in the same order,I would recommend that you change out board again. I have had several problems similar to this with Goodman units and all but one time installing new board solved it. That time I did everything I knew to do and talked to factory service techs repeatedly and finally installed new furnace. As far as your question about insulation,. As long as it is fire proof I can't see where it would hurt anything. Sorry I'm not more help. Good luck and thanks.
If the igniter lights the burners the ignitor..... is not bad. Its like a light bulb.... it works or ot doesn't.
You are describing a dirty flame sensor. Dishonest contractors will sell you a new ignitor but clean the flame sensor when the are installing the ignitor. It is located at the opposite end of the burners than the ignitor. It has one wire going to it. Remove it and clean the rod with a piece of fine grit sandpaper. this should be done every year before heating season.
sounds like the fan switch in the furnace is coming on and off. This is common for Goodman. or could be the heat anticipator on the t-stat. While there are several reasons this happens these are the most common.