ac fan motor runs then stops
The ACs compressor shouldnt run for less than 10 minutes and then turn back on a short time later and repeat the process. When a relay becomes stuck the circuit remains closed.
7 Reasons Why Your Hvac Condenser Fan Isn T Working
Assuming that the replacement capacitor was the same ie.
. And if you found out that your ACs fan stops spinning even though the system is running then the following factors might be the culprit. The Trouble With Short-Cycling. The dual capacitor is a run capacitor that serves both the compressor and the condenser fan motor.
Same mfd and vac rating as the old one most likely the bearingsthrust washers inside the motor are worn. The motor has to run for a while before it gets good and hot and then the heat is kicking in the failure mode. If Your Motor Is Failing Now Is The Time To Decide If You Should Repair It Or Replace It.
Compressor is still running. The fan motor housing seems very hot. That motor is a 14 HP 575 V 07 FLA and 850 RPM.
Turn the fan switch to off and back to auto. The failure is related to heat. Kung Fu Maintenance troubleshoots an air conditioner where the compressor is running but the fan motor will not startAlways best to take the capacitor out o.
AC unit old has been running fine until couple days ago. I decided just to. Help You Find Connect With Local AC Repair Pros.
Your air conditioners capacitors can be found inside the AC unit connected to three main motors. Heat mode and the fan still shuts down so I dont think it has anything to do with the defrost cycle. Troubleshoot the problem in three steps.
The capacitor was tested at full specs at the electric motor supplier. Its comes on may run for 15-20 minutes then fan stops unit makes loud noise. The compressor the blower and the outdoor fan motor.
My condensor fan motor starts and after 8-10 seconds stops. Fired it back up later to diagnose and the condenser and fan come on. Your capacitor could be the reason your air conditioner fan is not spinning.
This fan also stops running after 10-15 minutes. When the compressor starts the condenser fan motor will start and run for 10-15 minutes then stop running. I just switched back to cool and the fan and compressor come on but the fan stops after a few minutes while the compressor continues to run.
Relays are what open and close the electrical circuit in an air conditioner. The fan motor will restart after it cools. After a while 20-30 secs the fan motor starts again for another 8-10 seconds and then stops.
I also tried running it in AC mode vs. Why does it run for a while and then quit. One for the condenser fan motor and another for the compressor.
The compressor continues to run. Fan ran for 5-10 minutes and shut down again. If you have difficulty getting the blades to turn there may be debris wrapped around the fan axle or the.
As a result electric power to the fan motor doesnt stop and the fan continues to run. I tested the capacitor using Fluke DMM. If your air conditioner starts then stops after only a few seconds or your air conditioner turns off after 30 seconds then chances are theres a problem with your run capacitor and you will need to replace the part.
Ad Try Our Free Online Motor Decision Tool To Know If You Should Repair Or Place That Motor. One service company has indicated that it sounds like a winding on the blower fan motor has gone bad causing this intermitten cycling to occur and. The purpose of a capacitor is to store energy thats in return used to power your cooling system.
Its Fast Easy Free. New to this site however have an issue similar to above. Replaced fan with AO Smith same specs.
The are a lot of things that can contribute to your capacitor breaking down on you but once it does your air conditioner fan will stop working. At the start of the cooling season a year ago the fan would not start. Herm-Com tested at 502 μF and Fan-Com tested at 32 μF.
This is short-cycling and you dont want it affecting your cooling system. I shut the unit off to keep the compressor from burning up. If the fan doesnt turn off even when you flip the switch to the off position your.
Turn the unit off until its fixed or you will be buying a new compressor. The most common problem associated with the condenser fan motor getting hot and then stopping is likely the fan capacitor. You took over its job of kick-starting the fan by pushing the blades.
This might be s fan motor that is going bad a weak run capacitor or you might have a stoppage in the refrigeration cycle that is causing one of the high or low-pressure safety controls to turn off your AC unit. It does that problem repeatedly. If the fan takes off and then keeps going on its own you more than likely have a bad start capacitor.
For a condenser the capacitor is typically a dual capacitor. If I run the furnace the blower operates as expected. The fan is on but rotating very slowly.
The old wiring configuration used two capacitors. This combo has worked flawlessly for a summer and a winter. The condenser fan motor will run for perhaps 30 minutes and then it noticeably overheats burning hot and stops.
The torque to drive the motor of your electric fan comes from the magnetic field induced in the motor coils when electricity passes through the coils. When this part starts to go bad it can result in intermittent power being supplied to your AC causing it to turn off unexpectedly and then back on. An air conditioner draws on the most electrical voltage when its cooling cycle starts.
Either the capacitor is weak on the fan side or the fan motor needs replaced. Condenser fan GE rated at 100 amp was running at 38 amps and about 12 rpms rated at 1075 rpm according to a check by a service tech. That internal pressure relief that you hear hissing can not take too much abuse.
If the fan doesnt start running you may have a bad fan motor. If the thermostat isnt the issue the most likely problem is a stuck relay switch. It seems like it may be running a bit slow but not positive.
In looking at the posts it seems like folks are being pointed in direction of capacitor or fan motor. My problem is that the air conditioning unit Trane runs fine however when the blower turns on it will run for 25-30 seconds and then turns off for 60-90 secords before turning on again. Set your fan to auto.
Can it be the fan motor overheating protection kicking in after 8-10 secs. By Chris Deziel Updated December 29 2018. I have a Trane X80 furnace with a Nest gen 3 thermostat.
If the fan is set to on change the setting to auto so its only running when the air conditioner is running.
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