If thus is a conventional ac, not a heat pump, then the outdoor unit's contactor is probably damaged and needs to be replaced. It has "points" that open and close upon demand from the thermostat, and these points are probably stuck/welded closed. Or it's possible that the fan motor has shorted internally. This scenario will allow the outdoor fan to run all the time, but at about half of its normal speed/rpm. Now if this is a heat pump system, the outdoor motor is connected to a circuit board that may need to be replaced, or possible the contactor/shorted fan motor scenario also. Hope this helps! If you are not comfortable with working electricity, please turn off breaker to outdoor unit and call for help.
Is the compressor shutting down and fan is not??? How about the blower, is the coil freezing? Need to check the contactor on the outdoor unit, 240 volts hurts, please use caution. If not confident as to what you are doing call a professional. If need be turn off breaker, you do not want the coil freezing inside!
If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79
SOURCE: air conditioner
Remote control units have diagnostic program in the
control, after 3 to 5 minutes of operating if the diagnostic
tools detect abnormal operation, then its shutdown the unit
to protect from damage. Thermistor sensor is one of the
parts that detect the operation of the unit. Out of range
or defective thermistor can shut the operation of the unit.
-
If your indoor and outdoor is clean start the
unit in cool mode and monitor the outdoor pipes. If your suction pipe is icing
or dry then your unit is under charge, but if your suction is cold and sweating
then the system is ok and sure that the thermistor sensor is defective.
-
Out of range thermistor sensor in both return
air and freeze up sensor can cause the tripping “off “ the unit. The resistance
of both thermistor is 8 to 10k ohms, so can test by using ohm meter
SOURCE: ruud achiever 10 seer air conditioner
It sounds like your condenser fan motor may be locked up or the capacitor that helps give the condenser fan motor a kick to get it started may be defective. Try turning your system on and using a long screwdriver try to push the fan blade on the condenser fan motor to see if it will run normally if you give it the starting boost it needs.If it does run at full speed and doesn't over heat or start and then slow down then you probably only need to replace a simple 10-12$ capacitor. If it barely turns, makes an odd humming sound or overheats etc. then you will have to replace the condenser fan motor. This is assuming that the outdoor condenser has the 220v supplied and the 24v supplied to the compressor relay, that the compressor relay is engaged and suppling 220v to the condenser fan motor.
SOURCE: air conditioner doesn't work when the outside temp goes up
You need to take it to a local shop and have the freon level checked. It sounds like the compressor is cycling to much on the hotter days and is not running long enough to cool down the low side. this is mostly caused by low freon levels and with this type of system with an expansion valve is common. this is not a costly fix unless you have a bad leak or blockage.
SOURCE: My Air conditioner stopped putting out cool air.
The unit is overheating and tripping the internal overload of the compressor. Clean outdoor coils.....check outdoor fan to see if it turns or is siezed......possible bad Start/Run Capacitor which is a very common failure on condensing units......possible bad fan motor need replaced! Unit compressor can be cooled with a water hose to get it to reset the internal biometalic high limit switch that is located in the hermetically sealed compressor!
41 views
Usually answered in minutes!
×