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.
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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.
there are several factor on cycling failure, most common on it is the pressure switch device,checking on this,plug out or switch off main circuit breaker for compressor, disconnect pressure switch if this is a single phase connection,there are two supply wire coming in and two wire coming out on pressure switch.direct connection of compressor motor on power supply to test if it is cycling manually,after direct connection of motor compressor to power supply w/out pressure switch,switch on for 5 to 10 minutes o build a low [pressure then swict off again,then switch on again even there is a low pressure observe if there is cycling motor running if this done replace pressure switch.if still have same problem motor tripping another case not to cycle bring this to electric motor service center.have a nice day dont forget to fix my rate.
When compressor cycles off, your freezer fan should shut off as well !
Freezer fan should not be spinning while compressor off.
You might need a control board replacement, that controls fan.
If you are talking about compressor run time, that is a bit excessive, usual causes are dirty condensers but you say they are clean - are your condensers at the bottom of the unit ? If so make sure the condenser fan next to the compressor is running too, blowing air ont he condenser.
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.
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
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.
switch clicks off usually when the compressor is pulling too
many amps or the compressor is overheating. if the compressor is not even
running then its probably not overheating. ·so either the compressor is
pulling too many amps (bad compressor) or the start switch is bad and cannot
handle the amps required to start the compressor.
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