When using the Air Conditioner, the Goodman blower will start and stop about a minute later.
i have a goodman forced air furnace m/n gmnt080-4b. the problem is that the blower the forces air through the vents wont stay on, even if i turn the fan switch to the on position. it turns on for around ten minutes and the shuts off for a few, then repeats the cycle, it doesnt stay on long enough to cool the house, but the cooler is new and works, even if i leave the cooling and heating switch off and just turn the fan to the on position i get the same result. any ideas? thanks
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check your themostat fan mode switch to see if it in on or auto. It should be in auto. If this does not stop indoor fan motor, (it may take up to 2 minutes for the fan to stop, preprogrammed shutoff in the thermostat and fan control cards may make you think the fan has not stopped ) If this does not stop the fan the fan control board in your air handler has a green wire shorting to 24 volt signal in the theromostat wire or the contact on the blower control card is stuck and will need replaced.
press the contactor in using a wooden pencil does it come on? if so then you are not getting a control signal from the tstat or a low pressure (low freon switch) is open stopping the contactor from pulling in
First I would suggest that you replace the start capacitor on your blower motor but if it is running for awhile that makes me wonder if the thermal overload is shutting your motor off. You can replace the start capacitor and then if it starts as it's supposed to and then shuts off you'll know the motor needs replaced also. I hope this helps you . THanks
Check the relay or sequencer that controls the blower if it has one of those. If the fan is controlled by a circuit board then you problem may be there. If it is controlled by a circuit board then you can check for power at the fan connection when the fan is supposed to be on. Then there is always the possibility that you blower motor is burned out. You can use and ohmmeter to check the motor windings. You said you checked the thermostat, how did you do that? If you install a jumper between the R and G connections the fan should run if everything else is OK.
you have a possible thermal overload problem in your furnace blower motor dirt will cause this problem when it doesnt allow air across the windings of the blower motor if not dirt the motors going bad and getting hot use a shop vac and eliminate dirt keep your filter changed and your evaperator a coil may also need checked for cleanliness this will require cutting into plenum my advice someone qualified and remember dirt kills
That's a weird problem. I wonder if the outside compressor is drawing down the voltage in the breaker box enuff to keep the blower from starting up. If you're set to cool but the thermostat is NOT calling for the AC, can you manually turn the blower on fathfully? If so, I would check all wiring connections in the breaker box to make sure they are tight and free from tarnish or corrosion. You may even need to contact your power company and have a higher amperage line installed outside. Do your house lights blink noticably when the compressor kicks on?
While you're resolving this, you could start the blower manually and just leave it on. The compressor cycling on/off shouldn't stop the blower once it's running and it won't draw much current... couple bucks a month maybe.