Question about Fedders D Chassis A6D24E7A Air Conditioner

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Compressor runs all the time

Hello, Suddenly (while running) the compressor on this unit runs all the time-does not cycle in and out-even when the power is turned off on the panel--lights on unit and fan are off but the compressor keeps running--power must be cut to the unit to shut it down completely--this unit has already had the circuit board control panel replaced (different symptom) ?I suspect that this unit may have control panel board problems in general?is this correct? I am suspecting the circuit board control panel again or maybe some sort of relay switch?any help is greatly appreciated?I can e-mail pics of inside of unit to assist in any parts ID that may need replacement. Thanks, Ben III 863-683-2054

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Re: Compressor runs all the time

The miniature relay that supply to your compressor stucked, it never open even if the power is off.

Posted on Jan 04, 2008

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24ABR348A0031010 compressor starts then stops. Carrier 4 ton R22 unit. Worked great, then fan runs all the time. Compressor will start for less than a minute, then stop. Basically compressor will not stay...

Hello RR Hard start can't hurt BUT dosen't sound like the problem.Do you have a scroll compressor?They don't need a kit.Does it start every time?It could be short cycling on LOW PRESSURE SWITCH.If the unit is (pumping down) during the run time you have a restriction in the system.Make sure the service valves are open ,do you have a filter dryer colgging up or a bad TXV valve also could cause short run times.20-30 PSI the switch cuts out.

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I have a mr slim old unit mod# MU15SN and the unit cycle off after 15 mins of running time even though tme room temperature is above 80 deegre what could be the problem

These little uits sometimes have a compressor overload protection device mounted on top of the compressor. It could be malfunctioning or the heat is to great in the outdoor unit.

I would clean the outdoor unit and then replace the overload switch,
hopefully that will solve your problem

Jul 14, 2010 | Mitsubishi MS15TN Air Conditioner

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Kenmore AC compressor on and off while outside unit fan running

If the out door fan keeps running and the compressor cycles off that would be the overload in the compressor.
What keeps the windings cool is the refrigerant back to the compressor.
For the overload to cycle it would have to be either not enough cooling back to the compressor or high amp draw, which could be the metering device (txv or orifice) or low on charge, or other things would be a bad capacitor, sometimes a bad start relay not staying open, when compressor gets up to speed or anything causing the compressor to draw high amps.
To check the refrigerant, he needs to check the superheat at the compressor it should be appoximately 12° to15°, and next time the compressor goes off if you shut the power off and feel the top of the compressor and if it's hot 130° or higher it's probably refrigerant.

Aug 14, 2009 | Air Conditioners

1 Answer

AC is off but compressor cycles periodically

most likely your compressor contact is stuck closed, and will need to be replaced. if the fan also runs when the compressor comes on you may have a short between the t-stat and unit. hope this helps.

Jun 14, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

AC/Heatpump units cycle numerous times blowing ambient air.

If the compressor never kicks in, I would check the start capacitor, thermostat and the compressor windings. Most times the start capacitor is defective. Some window air conditioners the fan will run while the compressor stop through the thermostat switch. If the thermostat switch is bad every thing runs except the compressor. Let me know, Thanks, Sea Breeze

Feb 07, 2009 | Dometic Rooftop RV Air Conditioner

2 Answers

Compressor will not start.

If the unit is low on freon it will short cycle but a compressor internal overload will cause it to. Lets hope its the freon. Has it been frezzing up lately. Low freon is the cause most of the time. Make sure your filters are clean and both fans are running. Hi head can cause this to. (fans not running) How old is this unit. Maybe the coils need to be cleaned. Sound like this unit may need a check up and a good cleaning.

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Coleman rv a/c

It is definitely with the compressor. It should more like you may have a weak winding in the compressor, you can a hard start capacitor (sp5 ) that will help the compressor on restart. Note that this is a last chance solution for a compressor.

Oct 01, 2008 | Coleman Mach 15 Air Conditioner

1 Answer

I recently had a new outdoor unit installed on my central heat and air conditioning sytem. I have had the installer out 3 times and the system still does not operate correctly. Sometimes when it cycles...

It sounds like the compressor needs starting components installed on it. All a/c units have a run capacitor for the compressor and another one for the condenser fan motor. These motors use these capacitors all the time when the motor is running. However, in some cases, this capacitor isn't enough to get the compressor spinning initially. Starting components consist of two parts, a start capacitor and a potential relay. The starting components are wired in in series with the compressor run capacitor. When the compressor turns on, the start capacitor gives the compressor an extra "kick in the pants" to get it going, then as soon as the compressor is spinning, the potential relay disconnects the start capacitor from the circuit for the duration of the run time and resets when the compressor turns off. Most likely, your indoor unit has a thermal expansion valve (commonly known in the trade as a TXV). This valve maintains a somewhat substantial differential between the high side and low side of the compressor after the system turns off which can be difficult for the compressor to overcome without help. Right now the compressor is trying to come on, can't overcome the pressure, and is tripping it's internal overload to protect itself. Eventually, as the overload repeatedly trips and resets over and over, the compressor will finally get around to a position where it will start once in a while. I am not a gambling man and I would bet you money that this will solve your problem. If you would be so kind as to rate my solution "Fix-Ya".

Jul 03, 2008 | Air Conditioners

1 Answer

Compressor wont start

It is probably a failed run capacitor for the compressor. Without the capacitor, the motor can't even try to run, but it will draw extreamly high amperage until it trips the thermal overload (avarage trip time 5-10sec) after it has a few second for the safety to cool off, it will try again. Either that or the compressor truly is seized

Jun 22, 2008 | Coleman Mach III Air Conditioner

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