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Compressor short cycles, liquid line is cold, gas line is warm, air is not cool.

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Low on freon

Posted on Jul 29, 2008

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What's wrong with the tcl AC split if it's not cooling & hearting but the R22 gas if full and compressor, fans are running accordingly?

What are your pressures? Is the line set cold on the large tube and warm on the small one? Air filter clogged? Fin damage? Over full?

Nov 22, 2016 | Heating & Cooling

1 Answer

KF9000e. Why does compressor cycle at short intervals?

Yes. due to low rpm of fan motor in the condensor copil. or dirty condensor coil. I If so, replace fan capacitor.
If all good, check the seating of condensor set. It needs minimum 2mtrs open space for air throw. If not due to overheat compressor gets short cycling on and off.

Sep 07, 2015 | Amcor Heating & Cooling

2 Answers

Why does the compressor run only for about 5 minutes then shut off, leaving the fan still running?

It seems that you have a system short. You have to try resetting the system. First turn the breaker off for the condenser and wait about 20 seconds. After you turn it back on the system should reset.

If this doesn't help I would recommend calling a ac service company.

AC Repair Coral Springs

Apr 24, 2015 | Heating & Cooling

1 Answer

Goodman unit runs and at the a-coil there is a piston where your suction and liquid lines connect. On the liquid side the piston is cold but warm on the other side of piston. A/C unit will not cool.

That piston is the metering device. On the liquid line, before the metering device it is always warm (this is sub cooled, high pressure liquid), but should flash to low pressure, lower temperature vapor once it passes through the metering device. The suction and liquid line never connect together.The liquid line brings liquid from the condenser to the evaporator. The suction line brings super heated vapor from the evaporator to the compressor. Since the unit does run, I'd have to put a gauge on it,but if I had to guess, I'd guess you have high head pressure. Check for dirt or debris on the condenser, check for proper clearance of the condensing unit and check for operation and directional rotation of the condenser fan. This could also be the result of an over charge.

Aug 26, 2013 | Goodman CKL36AR36 Air Conditioner

1 Answer

Car blowing hot air when on cold

First check to see if your A/C compressor clutch is cycling on / off. If it is then feel the line that's entering the vehicle, not the one going to the condenser (usually in front of the radiator). If the entering line is cold, then you either have a damper problem (the little door that open to allow the cool air in from the heat exchanger) or you need to set your air ducting to recirculate, not fresh. If the line entering the vehicle is not cold, you may have a mechanical problem with the compressor or a refrigerant leak. A refrigerant leak (or low charge would prevent the compressor from pumping and you wouldn't hear the clicking of the compressor clutch as it cycles on and off while cooling. This is a common thing in automobile A/c systems. Sometimes from hoses or lines vibrating and rubbing against something until it springs a leak, and it could be very tiny.

Aug 21, 2013 | Heating & Cooling

1 Answer

After installing my Klimaire 30912-H216 mini split, one of the three evaporators is cooling but not as much as the other two.

actually the hi side smaller line should be hot to the touch and the low side larger line should be cool or cold, sounds like a low charge without any further information, the small line coming off the compressor is the liquid compressed it should be hot, the large line low side returning to the compressor is the gas after the coils and returning it should be cool or cold depending on load

Jul 06, 2012 | Heating & Cooling

1 Answer

My mistral reverse cycle mss25ss model does not work at all in heat mode. what would be broken?

firstly is the air comming from the outdoor unit cold or warm? if it is cold then the 3way valve is working and it has changed to heating. If it stays warm then it is still in cooling mode. The indoor fan wont come on until the coil temp gets warm enough, ( so it doesnt blow cold air on you straight up). If it is changing into heat mode then the larger of the pipes connected to the outdoor unit should get warm/ hot. If this is not happening then the unit is either out of gas or the compressor is on hollidays and wont come back to work.

May 22, 2012 | Heating & Cooling

1 Answer

My airconditioner buzzes when it trys to cycle cold air but it does not seem to click on and warm air comes out

Seems that the compressor is cutting off when trying to load, you might have to check on the capacitor of the compressor because a faulty capacitor cannot start the motor. Check also the relay unit if this is tripping due to the high load in case the compressor is faulty. unless we have teh compressor to run we cannot understand the fault of cooling. You can get help to use a clamp tester to see the starting currrent or if not check the compressor relay. mtor windings for shorting. Hope you try. Good day

Aug 16, 2010 | Carrier 36KCARMS Air Conditioner

1 Answer

Liquid line is cool coming from condenser indoor air not cold enough. Unit runs constantly at temps of 90 to maintain 80 inside

If the compressor is running at 90 there should be hot air coming out of the condensing units fan, if not it could be damaged valves in the compressor especially if the suction line is colder than normal like ice cold.
Obviously if the compressor is not running then you have other electrical problems.

Jun 02, 2010 | Bryant 463AAC005BA Air Conditioner

1 Answer

Cooling not cold

Hi, This is called a split system heat-pump. If it was cooling and stopped and cooled again and now stopped, you need to be sure the outdoor unit is working properly. You can only check certain things as they require special gauges and know how. Make sure the condenser fan is on and reach down where the 2 copper lines are when it is on. Grab hold of the large line which is the suction side and it should be cold enough to condensate. The smaller is the liquid line and should be warm in the cooling mode.If not, listen to see if you can hear the compressor running inside of it. Should hear a humming sound. You can carefully remove the control panel door and feel it to see, but BE CAREFUL! Don't get your hand in the fan blade. Do these checks and get back to me when you do and we can go from there.

Jan 05, 2010 | Heating & Cooling

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