Question about Goodman CKL42AR42 Air Conditioner

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Why is my highside to high and my low side to high on ac unit 410a

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Mine is also doing the same thing. only thing i can think of is maybe the valve in the compressor is stuck. but im no tech so dont hold me to that . email me please if you have found an answer to why it is that way. thanx Tim K. Email:

Posted on Aug 22, 2014


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Now use refrigrant 410a .but i dont no how mach puting gass unite in side. and how mach prassor high and low comming.

In order to do anything related to R-410a refrigerant, you need to be certified by the EPA. The fine is $30,000 for non-compliance. Please call a pro. I will not advise.
Welcome To the Best HVAC

Oct 08, 2014 | Heating & Cooling

1 Answer

What should the low side and high side pressure be on a rudd 3.5 ton R22 unit

low side 68 psi or 40 degrees at the coil

highside 25 30 degrees above ambient air (outside air)

Jul 15, 2014 | Ruud Handler Air Conditioner

2 Answers

How do you put in 410a into Ac unit

You turn system on to cool setting and run temp down until outside unit comes on. Then you connect your suction side of your gauges to the suction side of your outdoor unit. Next you connect the liquid(high)side of your gauges to the liquid line on your outside unit(the little copper line). Connect the middle hose of your gauges to the 410a drum of refrigerant. Before opening the suction or low pressure side of the gauges you need to turn the drum upside down and turn drum of 410a on. Then you need a temp reading meter and clamp to read the temp of your liquid line(small line). While charging you want to make sure to release refrigerant slowly. The unit should call for a specified subcooling on unit plate. 7 to 10 degrees. You take the liquid line temp and subtract it from saturation temp on the high side of your gauges.(it'll be the pink numbers on the right side of your gauge.

Jun 05, 2013 | Heating & Cooling

2 Answers

Im trying to figure out which cap i remove on my 01 cadillac to recharge the A/C because it doesnt have a L for lowside Or H for highside.

The easiest way to tell on any car is that the low pressure hose is always larger than the high pressure one, and you always want the low pressure hose.
You can also tell because it is the one going from the radiator condenser/receiver/dryer, to the interior of the car. It is never the one attached to the pump.

Jun 10, 2011 | 2001 Cadillac DeVille

1 Answer

A\c does not blow cold and system is

A 1999 Cherokee with the compressor running can be overcharged or the compresser blown, ( not pumping) Most of the timw if this happens the pump is noisely when running with gauges hooked to the system and the compressor on the low side shold be low and the high side 175 lbs. or more. If it is and the lines coming from the compressor are hot on the highside(small)and coldonthelow ( bigger ) thenan air doormay not be working in the dash. a scanner may help looking thought the body control systems and find something not working correctly.

Mar 22, 2010 | 1999 Jeep Grand Cherokee

2 Answers

Ac dont cool ,need specs ,highside is 150 psi,low side is 0 ,at idle ac max on

Is your compressor cycleing repeatedly or is it staying on. Or, is it not moving at all. If it isn't cycling or moving at all you need to top off your system charge.

Sep 07, 2009 | 1993 Ford Explorer Limited

1 Answer

2004 PT Cruiser radiator fan comes on in high speed mode when AND

You can either jump power from the high to low sides, or wire a switchable power wire so it comes on when the ignition turns on. It isn't really computer controlled. A sensor just sends power to it when it needs to run. No fear of hurting anything.

Jul 01, 2009 | 2004 Chrysler PT Cruiser

1 Answer

Ac highside charge line location

the high side should have a black cap with a letter H on it.... if you dont see it then look for 2 valves that have caps on them, the larger of the valve is the high side, the smaller is the low side, the low side is the only one you want to use if you are refilling the system you do not want to mess with the highside... the low side pressure makes it so you can recharge the system, the highside will not work to refill a system if you are using the store bought recharging systems... and the valve on the recharger will only fit low side... hope this helps you... the highside should be on the pass. side towards the rear o the engine...

Jun 23, 2009 | 1997 Volvo V90

1 Answer

Need to add Freon cannot connect manifold high or low side.

yes there is an adapter to reduce to fit 410a hoses, go to a HVAC supply company they have them

Jan 14, 2009 | AmcorAire UCHW-H24AF2 Split System Air...

2 Answers

High side low side pressures don not respond to freon levels

Chances are you have a TXV already installed. Thats why simply adding refridgerant is not effecting the pressures.

All you are doing by adding refridgerant is overcharging the unit, and possibly forcing the compressor to try to pump liquid instead of vapor. Not god for the compressor.

If the vibration noise is your only problem, I would try emilinating the vibration.
Find where the lineset is touching other parts of the house and install vibration dampening opads there. If the airahndler is mounted to the structure of the house, install vibration reduxction pads there too. If it is suspended from the floor joists you may have to change that mounitng method.

You can suspend the drain overflow pan and then set the unit in that on dampening pads, or set it on blocks from the floor/crawlspace.

Check your data sticker to find out how many pounds of refridgerant the unit takes.

By now, you are probably way overcharged.

Dec 11, 2008 | Ruud UAKA042 Air Conditioner

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