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Condensor fan wont come on

New fan and condensor and still will not work handler comes on in the inside but nothing works on the out side it a model cns36bav.it worked till we had a storm and lost power and now power is on it stoped working

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Check you breaker for a/c seperate from air handler and check the contactor could have coil blown for low voltage not calling in the compressor

Posted on May 16, 2009

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1 Answer

My air handler fan does not come on, the outside unit turns on fine. Is their a way to reset the fan?


Check for fan operation by turning the fan control at the thermostat to "on". If the fan blows, it works. If not, check a circuit breaker or fuse.

If the fan blows when forcing it on with the thermostat but not in automatic, check the fan control circuit in the air handler. Danger: high voltage, beware! There should be a system wiring diagram inside the air handler somewhere.

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Sub zero 642 refrigerator not cooling


Being a sub zero tech and actually fixing that exact model earlier today I would recommend you call a qualified service tech to come take a look. If not, I'll tell you the steps I would take to isolate the problem. 1) check to see if the refrigerator fan, also called the evaporator fan, is running. Just open the door, hold in the switch next to the light switch and listen. You'll hear it easily if it is. 2) If fan is running remove the grate up top, the one you took off to put the condensor fan motor, and see if the right side compressor is running. Don't always go with if its vibrating its running because the freezer compressor or the condensor fan can cause it to happen. Find the high side, or condensor line which is the smaller that comes out of the compressor in the back and runs up front to the condensor, and feel if its hot. Hot = good, cold = bad. Note that all this can be avoided if you have a set of freon guages because that model has access taps already on them. They are wrapped in yellow. If you have guages unscrew the cap and connect the guages. On the outside numbers the needle should be around the 25-30 on the positive side. If its in the green area, the negative, around the 10 you need some freon, and possibly have a micro-leak that needs repairing. If its down in the -20 to -30 area you have a serious leak, more than likely in the evaporator inside the fridge, and you should relay call a tech. Now if the needle jumps way up to 70 or 80 and the compressor is hot, really bad, call tech. and if it does that and is cold, the compressor is just off. Now if your still with me and stuck through this far i'll give you the cliff notes.
If the temp is 55 that mean the fan inside is running, and that more than likely the compressor. Now here are some questions to ask yourself. Are the condensor coils clean? That would raise the temperature. You just changed the condensor fan motor, did you put the blade back on right? If the air flow is blowing across the compressor in the direction of the freezedr compressor, your blowing really hot air from the condensor across the compressor and your temperature will raise badly. Fan draws air across the compressor and through the condensor. Worse case scenario you jacked the control board up inside, which I dont think is the case either. ** check that fan blade **

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1 Answer

Fan works but condenser does not kick on


You air handler and condensor run off of two seperate circuit breakers. They share the same control voltage source. With the air handler responding to the thermostat setting, we know you have control voltage. You either have a problem with the line voltage at your condensor or something is happening in the control. Check your circuit breakers and/or fuses to your outdoor unit. Also, look for a red button near the area where the refrigeration pipes enter your condensing unit. Push the red button. If it starts to run, your unit went out on High Head Pressure. A dirty air filter this time of year can cause head pressure problems in the heat cycle (assuming this is a heat pump). Also check for cleanliness of the condensor coil and ensure proper operation of the outdoor fan motor.
There are a couple of components inside the condensor that could prevent it from running. One is the contactor. If the contacts are pitted or if a bug crawled in between them, it will prevent the unit from running. Another component is the Dual Run Capacitor. If this fails, it could prevent operation of your outdoor fan and compressor. Don't forget to check all your wires and connections. Always shut off all power prior to reaching into the electrical compartment.
I hope you find this to be very helpful moving forward. :-)
Testing Run Capacitors

Failed Compressor Contactor



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1 Answer

Why does my fan runs continus. and the condenser won't run out side.


The fan runs continously because your condensor is not kicking on and removing the heat. The thermostat needs to come under the set temp. to kick off the fan. If your compressor doesn't run and the fan on the outside unit does run, your compressor has an issue. If nothing runs outside, then your transformer on the inside unit(air handler) has an issue. This could also be a control relay on the condenser or the air handler.

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Turn fan to on position to see if it comes on. If you amy have a bad fan relay ot fan capacitor. Need to call service tech sorry

Jun 15, 2009 | Heating & Cooling

1 Answer

Condenser fan wont come on nor will compressor I do have fan op


Thanks for your Question,
First thing to check is the breaker in the panel to see if its tripped, I would suggest turning to off, then back to on, if it trips right after you have a short, if not you will need to check your fuses at the disconnect, first, shut the breaker off to the condensor, then pull the fuses and Ohm check them, if you have no reading then one or both is bad, I would recommend replacing them both if thats the case, if they check good, then you have bigger issues with your heat pump, if these suggestions do not work let me know and I can go into more indepth proceedures with you on what to do, thanks again,
mr.grzz

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2 Answers

Airconditioner problem


This unit has a bad Start/Run Capacitor or a bad Fan Motor! Replace the $10 Cap...An then the $90 fan motor if the Cap dont solve it!

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