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What should you do if your residential AC outside unit fan will come on and the compressor will only come on for a second and then shut off and the unit is not throwing a breaker?

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2010-07-24 06:09:44
2010-07-24 06:09:44

Call an HVAC repairman. You're probably low on freon and a protection system is keeping the compressor from burning up.

Sounds like to me it is a protection device. Probably an internal overload on the compressor. Have you checked the outside coils they may be blocked with dirt? This would cause the compressor to go out on overload.

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250 lbs and 75 depending on the outside temperatur.

It is possible that the circuit breaker for the compressor unit is thrown (switched to "off"). Go outside to the compressor unit and follow the big cable up to the circuit breaker panel on the wall. If it is off, throw the switch to "on." If that is not the problem, something is probably wrong with the compressor unit. Turn off the breaker panel and call a repairman.

More than likely there is a problem with the wiring or connectors . The fan is only working at low because there isn't enough current getting to it.

Yes. Was the compressor running? Answer Depends on the refrigerant, but for residential systems they use either R22 or R410A, and those pressures are not right for either system. If the compressor was running, sounds to me like you have bad valves in the compressor and probably need a new compressor (or a new system)

The electric motor is probably bad if only the fan is not working. If you cannot hear the compressor running, either, then you may just have a tripped breaker, or the relay on the outside unit may be dirty. Ants like to get in those outside housings for the electronics; it's good shelter. The relay can be cleaned, and the breaker reset. If the motor is bad, it can be replaced. Call your local A/C service company.

A stuck compressor contactor. You can turn off the circuit breaker or pull the outdoor disconnect switch to stop it if you have not already done so.

It depends on the outside temperature, the vehicle and the compressor but it can be between 38 to 43 degrees..................

Even though the A/C unit is outside, the breaker for it will be in the entrance panel box inside your home. It should be clearly marked.

If the fan outside is not running the compressor will overheat and if the fan inside the house is not running the compressor will get liquid refrigerant back to it and lock up! Neither is good for the compressor.

The question isn't what you're powering with a particular gauge of wire, but what's the current draw. If the metal halide light can run on a 15 Amp breaker (from the breaker panel), fine use your metal halide in your residential application and run it on the 14 gauge wire.

Assuming you mean the outside of the compressor, no. The gasoline (petrol) may damage the seals. And don't use gasoline to clean the inside of the compressor either.

Usually with a key from the outside or thumbolt from the inside.

Usually compressor not running or low on refrigerant. And yes it is supposed to be warm

If the breaker only trips once a week you may have a bad breaker or the breaker may not be large enough for your A/C unit. You should also have an electrician look for any loose connections from the unit to the breaker panel. (It is not uncommon to have a bad breaker)

Try putting a sound blanket over the compressor. Will that make the compressor run hot?

I coaxed the skunk out of the house by throwing bacon outside.

because they are throwing garbage inside or outside...

it isn't because it will eventually decompose

Hi, Outside unit means - Compressor and Condenser. 1. If compressor weight more- More power is required to do the same job as lighter compressor to get same work output. Life of the compressor has to be checked. 2. Condenser weight- the thickness of the condenser tubes is more then heat tranfer reduced. overall efficiency of system will reduced.

the compressor is not running. Check your breakers.

near the compressor on the wall of the cooling condenser

It will run continuously if the refrigerant charge is off. The compressor, condenser fan and inside blower fan should all run at the same time. If your thermostat shows that the unit will not keep up, it will not stop. If the unit used to cycle ok, clean outside coil, change filter inside and put a thermometer on the register closest to the air handler. It should be around 52-60 degrees F.

The compressor is located outside of the house in a metal box with coils in the sides and a fan in the middle of it to blow air through the coils. the compressor should be located under one of the side panels of the box.

The screw compressor of the air is sucked from one side of the router, the pressure is off. The centrifugal compressor air from being sucked into a duct by the duct from the outside pressure. Multi-suction centrifugal compressor impeller rotates on an axis.


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