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Unit stops doing ac and just runs fan after a short time

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Unit stopped cooling, inside unit runs, outside unit does not


could be a gas leak ( low gas pressure shut off switch, failed start run capacitor for the compressor , vermin problem shorting out the power board outside
The inside unit is just a fan
call an accredited ac technician to get a proper diagnosis and quote

Aug 06, 2016 | Heating & Cooling

1 Answer

Fan comes on when engine not running and running the battery down


Hello
Start car Check out fan should not work when engine cold ( ac off)
when engine gets hot enough fan should work cool down engine and stop. locate the unit controlling the fan and see if there may be a short of unit or wire to unit

Feb 17, 2015 | Cars & Trucks

1 Answer

Why is one 30 AMP fuse pair blowing on Carrier Tech 2000 SS AC Unit?


Pull off one of the wires to the fan. If it still blows a fuse the compressor is shorted. If not replace the fan motor.

Jul 03, 2014 | Carrier Heating & Cooling

1 Answer

The fan motor is on all the time with the controls shut off. I have to shut the unit off with the main breaker. The ac works but again the fan never shuts off. On the circuit board the LED flashes 8 times,...


The indoor fan or the outdoor fan? If it is the indoor fan the thermostat may be wired incorrectly or shorted. If the red wire and green wire in your thermostat maintain contact, the indoor fan will run all the time.

Aug 03, 2011 | Heating & Cooling

1 Answer

Kenmore central air conditioning unit tripping breaker each time we turn it on.


The breaker tripping when you turn the unit on indicates a 'direct short' and 99 out of a 100 times the short will be either the outside fan motor or the compressor itself. Either way - you will need a qualified serviceperson to diagnose this problem correctly and make the needed repairs.
Best solution is to call AC person.
However, here's a good way you can get it down to either the fan motor or the compressor.
(1) With all power OFF - disconnect the wires to the fan motor
(2) turn on AC unit (a) if breaker trips it means the compressor is probably the shorted component. (b) if breaker DOES NOT trip and the compressor runs - it means the fan motor is shorted.
(3) If breaker tripped with the fan motor disconnected meaning the compressor is probably shorted you can then (with ALL POWER OFF) 'disconnect the wires going to the compressor' and re-connect the fan motor wires. Turn on power - and if fan motor runs (with compressor wires off) you know it's the compressor that is shorted.
After all this you will now know which of the two (compressor or fan motor) is shorted.
If it's the fan motor you can with 'limited mechanical experience' change the motor yourself, but if it's the compressor you will need to call a serviceperson because of the expertise needed to replace the compressor.

Jun 05, 2011 | Kenmore Heating & Cooling

1 Answer

Compressor appears to kick in, runs for short time


It sounds like your unit may have a bad run capacitor or start capacitor and relay. Low voltage will also cause this problem. First you need to make sure that you have the full rated voltages at the unit, if you do, then, have the run and start capacitors checked out and the start relay.

May 31, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

NO POWER TO DOWNSTAIRS FURNACE NO FAN NO AC ??


what brand? most likely fuse is blown on furnace control board if there is no fuse then transformer could be blown sounds like a short in system look for bare wires at ac unit small wire outside especially if your have dogs around ac unit

Jun 24, 2009 | Heating & Cooling

1 Answer

Lg split indoor fan runs non stop


Hello Hamid,
The unit is designed to run the indoor fanmotors continuously when in cooling mode on both indoor units (evaporators). The reason is that this circulates the air and the temperature thermistor or sensor is able to sense return air temperature and in turn start or stop the outdoor unit and compressor as required according to the setpoint temperature. The reason for either unit not reaching setpoint temperature can be a couple of reasons. A) Incorrect design - the unit may be too small for the application. You can calculate this roughly at 650BTU per square meter of room in a relatively warm ambient climate. Or secondly B) The outdoor unit has leaked and is short of refrigerant. You can check this when the outdoor unit is running by feeling the thicker copper tube on the right hand side of the unit. This should be cool to cold. If no temperature difference is felt, it is short of refrigerant. Hope this helps you. Goodbye

Aug 11, 2008 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

Haier ESA 3185 AC won't cool; makes escalating loud vibrating noise near front panel/ filter


Have someone check the run capacitor of this unit. If the run capacitor is bad over shorted it can cause the unit to run and short cycle on a current overdraw. This makes for an electrical imbalance in the compressor motor. Next step is the compressor is faulty.

May 16, 2008 | Haier ESA3245 Thru-Wall/Window Air...

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