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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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Posted on Jan 02, 2017

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3 Answers

Can youput to much freon in and what will it do


4 cans will be too much
it makes the compressor pump liquid instead of gas and that damages the compressor
it the compressor is still capable of pumping gas then it will go to high head pressures and that will switch the compressor off
you have wasted your money, run the risk of expensive compressor damage , didn't fix the leak that required the gas
The specialist ac shops are not there to take your money but to give you a system that runs without problems so use them to fix the faults and put the right amount of gas in using gauges not cans

Jun 20, 2016 | 2009 Chevrolet Chevrolet Cobalt LS

Tip

How Heat Pumps Work


How on earth can you get hot air or hot water from very cold outside air? How does a heat pump make this heat out of cold air?
When certain gases change their state from a liquid to a gas or from a gas to a liquid the magic happens.

A heat pump can do some pretty amazing things, when it comes to making heat. To understand the way they work, you must first understand what happens when certain gases change from a liquid state to a gas and back to a liquid again. To simplify it a bit we need to look at a basic air conditioning system. The refrigerant in an air conditioning system is changing to a liquid in the outdoor condenser. The compressor compresses the gas forming a hot gas. As this gas cools under high pressure it changes into a liquid form.

Inside the indoor coil the liquid is pushed through a small hole or orifice. When it comes out the other side it rapidly changes it’s state to a gas as the pressure suddenly drops. The rapid pressure drop changes the refrigerant to a very cold gas. Air flowing over the cold gas inside the pipes makes the air cool and provides air conditioning.


Now for a heat pump the process is much the same, only coils are just switched by used a reversing valve in the outdoor condenser unit. Instead of the heat being purged to the outside from the condenser unit, the indoor unit then becomes the condenser coil. The outdoor coil becomes the cold coil and cools the outside. This is why if it is very cold outside the unit will have to run in air conditioning mode for a short time to defrost the outside cold coil. When this happens the system will usually have electric heat inside to run and keep the indoor air warm.

The reality is that a heat pump is really no more than an air conditioner running in reverse. Through the magic of using refrigerants, a heat pump can then run many times more efficiently than straight electric heat. A careful heat loss/gain should always be performed by a qualified service person before any sizing of a unit. Too large or too small of a heat pump system can make it inefficient and possibly cause it to be very uncomfortable. The longevity of the unit can also be affected by sizing and installation. Be patient and look carefully for the best contractor to install your system.

A properly designed and installed heat pump system can give you many years of comfort and efficiency. If you look for and find the contractor that can do the job right you will get many trouble free comfortable years from your heat pump unit.

on Dec 29, 2009 | Heating & Cooling

4 Answers

2004 sebring air conditioner stops and starts


Low freon will cause the compressor to short cycle, when the compressor runs the pressure in the low line is pulled down and the low pressure switch turns it off. Not running the pressure builds up and turns it back on. In the old days there was no low pressure switch, with no freon to carry the oil the compressor was destroyed.

Jun 28, 2014 | 2004 Chrysler Sebring

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

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

Took car to shop today with A/C problem that developed yesterday. A/C was cycling on and off (cool air not the blower), then finally stopped. Shop said there was "power" at the clutch but...


your clutch can be good and the compressor has gone bad, The compressor puts the refrigerant under pressure and sends it to the condensing coils. In your car, these coils are generally in front of the radiator. Compressing a gas makes it quite hot. In the condenser, this added heat and the heat the refrigerant picked up in the evaporator is expelled to the air flowing across it from outside the car. When the refrigerant is cooled to its saturation temperature, it will change phase from a gas back into a liquid (this gives off a bundle of heat known as the "latent heat of vaporization"). The liquid then passes through the expansion valve to the evaporator, the coils inside of your car, where it loses pressure that was added to it in the compressor. This causes some of the liquid to change to a low-pressure gas as it cools the remaining liquid. This two-phase mixture enters the evaporator, and the liquid portion of the refrigerant absorbs the heat from the air across the coil and evaporates. Your car's blower circulates air across the cold evaporator and into the interior. The refrigerant goes back through the cycle again and again.

Jul 13, 2011 | Air Conditioning and Heat for Suzuki Aerio

1 Answer

Hello I have a frigidare refrigerator Model #GLRS64ZEB7 that doesn't get cold. I cleaned the condensing coiled. I tried it and it still didn't work??? The compressor is running the suction line is getting...


Hi,

Unit is low on freon......

Many times a freezer and/or refrigerator do not work right because of a dirty condenser coil...there are also many other things that can go wrong.


If you are hearing a clicking or buzzing then check out the last two tips.

If your refrigerator is running but warm, then...

Check out these tips that I wrote about that... it is a great place to start trouble shooting your unit...and something that you can do rather then calling a repair person to do a simple thing for you...

Refrigerator Condenser Coil Cleaning Refrigerator Repair

Refrigerator Troubleshooting Refrigerator Compressor

Refrigerator Compressor Start Capacitor and Start Relay


Refrigerator or Freezer not Cooling or Getting Cold

heatman101

Dec 14, 2010 | Frigidaire FFHS2311L Side by Side...

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.
Sincerely,
Shastalaker7

Jan 05, 2010 | Heating & Cooling

1 Answer

2004 F250 A/C hot only when idling


check to see if coolant fans is working. they have run to cool down the 134 refrigerant in condenser.back down to liquid state .so it can run the cycle again.

Apr 23, 2009 | 2004 Ford F150

1 Answer

Fridge cools for awhile then compressor cycles on and off


Not the compressor. Two reasons why. If your compressor was bad, you would not hear it at all, also the compressor would be very hot, do to the piston not moving and the shaft just moving or the liquid not turning into vapor. One way to check for sure is to take a multimeter and see your voltage. You can also touch the suction and the liquid line, if one is cold and the other is hot or warm then compressor is working ok. Also when you unplug the system and you reset everything, you are not reseting the compressor you are reset the relay

Feb 09, 2009 | Refrigerators

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