Condenser fan nor compressor not pulling on - Heating & Cooling

Wire the fan in with the compressor. Is there a pressure switch that usually runs the fan, or a thermistor on the condenser?

clear the air way for circulation

If I understand you correctly the compressor is short cycling. The more it does this the worse it gets by causing the compressor to overheat. Sometimes the problem is because the condenser fan or evaporator fan being defective. Pull away from wall and remove cover over compressor unplug and feel top of compressor and if too hot to keep hand there keep unplugged but do examine the evaporator and condenser fan to eliminate them as a reason. The most likely reason is start relay and or start/run capacitor and sometimes a worn out compressor.

Overload relay click here=> 67002527
Run capacitor click here=> 65889-4
Location Click Here=> MBB1952GR Compressor Components
Parts in that photo are marked as 10 overload/relay, 11 is the run capacitor and 3 being condenser fan motor. Condenser and evaporator fan motors do not always stop completely when bad so make sure both run while compressor is running. If this has been helpful please rate if you have more questions please let me know, Thanks Sea Breeze

Good day,
On models with 2 compressors the condenser fan motor runs 24/7. It must since the compressors run randomly and that motor must be on since it handles both units.

Fan noise is subjective. It itself makes little noise but the blade does. If for example the blade was changed from the nylon style to a metal blade (good idea) then it would be somewhat louder.
If the noise is not objectionable then I would use it as is.

Its an indication that your compressor is running hotter than normal due to a dust/hair clogged condenser coi. Remove the machine compartment cover on the top. This is usually held in place with two 12" long spring clips, sometimes its held in place with two screws, the former will tilt out by hand, the latter will not. Look at the outer side of the condenser coil, opposite from the compressor(s) and the fan motor. is it thick with dust and pet hair? If you can see any aluminum shining, its probably not that bad, and i would then check to see if the condenser fan motor is running. This fan motor pulls in cooler air from your kitchen, across the condenser coil, through the fan itself, then blows it further across the compressor(s). If this fan is not blowing, the compressors wont get cooled, and prematurely shut off during refrigeration cycle. If this fan is blowing, and condenser is cleared, you have more serious problems, and i would recommend you have an Expert Sub-Zero Refrigerator Repair service inspect and diagnose your problem

There is a condenser fan down at the compressor area that isn't running at enough rpms to properly cool compressor. You will need to clean the condenser coils and also install new condenser fan. The compressor is over heating and shutting down on internal overload. Replace this fan and you will be good to go. As an emergency aid you can pull unit from wall about 6 to 12 inches and place a fan in the front area out of your way letting it blow air thru the front over the compressor until you can get the fan. Hope this helps and good luck.

Hi, you say compressor and fan are running, you have 2 fans, a condenser fan motor in the back behind the panel at the bottom, and the evaporator fan in the freezer. When you check the condenser fan in back by the compressor, check the front of the coil to make sure it is clean as the fan pulls air through the coil to keep internal pressures down. You may have a sheet of dust on it. Check these things and get back to me. Keep me posted.
Sincerely,
Shastalaker7

check that compressor is running. if your hearing a hum and then click you probably have a faulty compressor relay. most times you can pull it off and shake it and you will hear little bits rattle, well it should actually make no sound. but it could still be bad if compressor fails to run. compressor may or may not be warm.

It is possible that the relay in the thermostat for "cooling" has gone bad. The relay that runs the blower is different than the condenser relay. Check that you have 24v AC coming from the t-stat to the "y" terminal at the air handler. That same "y" wire should go out to the condenser, make sure then that you have 24v out there. If you have 24v at the condenser then see if the contactor is pulling in. If not then you may have a loss of charge switch that is stopping the current to the contactor. See if you have 24v to the coil of the contactor. If the contactor is pulling in and power is going to the compressor then the compressor has failed. If this is the case the condenser fan will be running but the compressor is not. If neither the condenser fan or the compressor is running then you have a problem in the 24v circuit, which could be a bad wire or a safety switch.

As you can see there are a number of possibilities for your problem. You will need to methodically go through everything to eliminate the possiblities till you isolate the problem,

I hope that this will help you to solve your problem and get you cooling again!

Thanks for using Fixya!

Heatman101

This really depends on the manufacturer and their preference on design. First, the fins at the compressor are part of the condensing coil. Most all makers have air pulled into the condenser coil and blown across the compressor. You should be moving room temerature air across the condenser and the air from that is usually then moved across the compressor.

Hope this helps clear it up .