Question about Heating & Cooling
Blows But Will not heat or Cool
There may be a compressor problem.
Can you detect if the compress is spinning?
Posted on Feb 11, 2012
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Posted on Jan 02, 2017
SOURCE: goodman ac / heat pump
Goodman energizes it reversing valve in the cooling mode. Usually in the "o" circuit of the thermostat wiring.You may have that wired hot somehow.
Posted on Nov 28, 2007
SOURCE: no heat
Well on some a/c units you need to put water in a special area so that the machine can cool it down to the freezing point and blow air over it therefore releasing cool air. If that doesn't work you can always return it for a new one. Hope this helped. =)
Posted on Feb 25, 2008
Most likely has a freon leak , or a control problem causing heat to turn on, or if you have a heatpump the reversing valve has a problem.
Posted on Oct 10, 2008
The 3 amp fuse is for you're control voltage only, which is 24volts,ac. Something in the control side of your unit has a direct short in it. Since I am not on site to help you find out what part is at fault, I will give you some things to check out.You say you're indoor fan runs. I can only assume when you put the thermostat fan to on and not auto. Since this is a heat-pump, and not a gas fired unit, you will have a few less things that are 24volts.You say it blows the fuse on both heat and cool. You or someone that may give you a hand needs to do a process of elimination. What you will need to do, is to check all of the 24v. components to see which is at fault. The 24volts via relays and coils are what controls the motors, compressor, ect. We know that the indoor fan is good. I would be looking at the contacter coil first, even though the thermostat is 24volts. Since the contacter controls the condenser fan motor and compressor, my guess would be the coil on your contactor is shorted. I am not sure if you're heat-pump is a package unit or a split? Either way, you need to open up the control section of the compressor section which on a split its the outdoor unit. On a package unit, its where the main power enters. That would be on what ever kind of Goodman you may have, the 220volts come in and each of the 2 hot wires connect to the bottom of the contactor.What to do 1st.What ever it is, a split or a pack unit, turn off the main power to unit, split, outdoor unit, pack, whole unit.Even if this is a split system, when you turn the power off to the outdoor unit, you will still have 24volts to it when you turn the stat on.The 24 volts comes from the fan center on the indoor unit. With all of the power off, look at the contactor. On each side you will see 2 wires to a copper coil. Pull off these 2 wires, and dont let them touch anything even though they are dead.Turn power back on and check the 3 amp fuse. It should be fine. Now, with the power turned back on, touch these 2 wires back to the coil.This should blow the fuse. If it does, that contactor needs to be replaced.I know this is a lot to check, but I am sure the contactor coil is shorted. You will have to buy one from a retail appliance store. Every wire must be put back in its original place. If you don't think you can test this, I would advise calling someone out. I know this is a long solution, but i am sure that is the problem. Let me know please. Good Luck,
Ps an electrical meter would be of a lot of use to you. One more thing, if the copper coil on the contacter is burned and black, just turn off all power and replace it. I am certain this is your fault.
Posted on Nov 12, 2009
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