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Freon pressure to high - Sub-Zero Freezers

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Why wouldn't an upright freezer work if turned off for a long time


If the refrigerant (freon?) leaked out, the low pressure switch would not let the compressor start. Do you have any way to read the static pressure (without the unit running)? It probably had R22 freon in it originally.

Apr 24, 2017 | Freezers

2 Answers

Whirlpool freezer cool air but not freezing?


Check the seal first. Then check the freon. If it's R-12, you can go to the auto parts house. They have a bottle with a hose to add freon. You put it in on the "suction" low side with the unit running. you can tell when it has enough by feeling the low line be cold and teh high pressure line is warm to hot

Jun 06, 2014 | Kenmore 14.1 cu. ft. / 399 liter Upright...

1 Answer

My bosch ksu 40600 keep switching on and off


It\'s called a short cycle. Most of the time, it means your compressor is about to fail cause your head pressure is to high and cuts out on the high pressure sensor, or your thermostat has issues or if your lucky, your low on freon and it cuts out on the low pressure switch. The unit when the compressor is not running, the pressure equalizes and runs around 30-70 psi, give or take a few. When the thermostat says it\'s too hot in the box, it turns the compressor on. When it does that the freon is pumped and as it gets the coil colder, the pressure drops and if there isn\'t enough freon in the system, then the pressure falls below the set point and the pressure switch shuts the compressor off. I wouldn\'t let it run like that as it\'s hard on the compressor and left running, will shorten the life of the compressor.

May 20, 2014 | Freezers

1 Answer

What to do if you have a freon leak in the freezer


charge with detail (that is a Freon with Red dy solution to help locate your system leak) locate leak, repair using silver solder, evacuate system completely, pull vacuum down to 27" plus Lbs. vacuum, close system to hold vac pressure, monitor pressure for 30 minute or so, if vacuum hold pressure then you have successfully fixed your system leak, next hook up your system to the manifold gages assembly to a Freon supply source, all this while retainning your vacuum pressure, slowly crack open the valve on the manifold to allow the new freon to enter your system until you see pressure building up in you system, next monitor the discharge line i.e. the bigger line until you see frost extending outside of your freezer unit toward your compressor assembly, then close the freon supply valve, wait for a while to see if the frost line recede into the unit box, if it does not recede but stay out of the box or extend some more then you must must release some freon slowly a very small amount at the time until the frost line has regressed into your freezer box. this should complete your repair, good luck

Apr 24, 2012 | Kenmore 20.3 cu. ft. / 575 liter Upright...

1 Answer

I have arctic air commercial freezer m # F2CW11 s/n# WB338336 freon R134a what psig ? low side and high side when system on


Good day,
When running, the low side is usually about 2 to 4 lbs pressure. The high side is determined by the load and the temperature in the room or area. Minimum 125 lbs. maximum approx. 150 lbs.

Oct 28, 2010 | Arctic Air 22 cu. ft. Commercial Freezer...

1 Answer

Delfield MD # 6151 - S Sr # 206156-T not pulling down to Temp set at -10 and only pulling down to 24 freon is good


Take the top cover off that is next to the compressor,. That cover is about 30 by 30 inches. You will see two fans and an evaporator coil. Several things can happen. First these fans won't come on until the coil is somewhere around 10 degrees or if the door is open. So, once the freezer has been running look under the big cover and be sure both fans are running. If one or both are not running it won't pull down to 0. Also look at the coils and see how much frost has accumulated. If your defrost timer is not working it may be frozen over. When that happens air is blocked from reaching the inside of the freezer. While you are at it, fell of the coils if they are only partially freezing, you may be low on freon. If you have gauges to check the freon charge, check both the high side and the low side pressures. If the high side is less than 200 psi, you have some freon, but maybe not enough. If the high side pressure is 300 psi, you have something blocking the freon from returning to the compressor. Usually a blocked cap tube or a malfuncting expansion valve. Finally check the condenser coils which is the radiator thing out where the compressor is located. If it clogged with dust and grease, it will not dissapate the heat from the freon and will intefere with the operation of the entire unit. Clogged condener coils are probably the number one cause of burned out compressors. Good luck.

Sep 17, 2010 | Delfield 113.28 cu. ft. Commercial Freezer...

1 Answer

Freezer Unit Isn't Functioning


Inside the refrigeration system alot is goning on. You have to check the pressures low/high to determine the problem. It is easy to say that your unit needs freon but that is not always the case.
here is a list of possible problems:
dirty condenser
dirty evapoator
fans not working
defrost not working
lost of freon
bad compressor
bad compressor valves
slugging
flooding
lack of oil
super heat off
txv is stuck open/close not sensing
incompatilbe unknown freon mix...

well these are just some of the problems you can encounter. this was meant to tell not fix because each problem needs attention but hope this was a little helpful anyways





Mar 29, 2010 | Traulsen 69.1 cu. ft. / 1957 liter...

1 Answer

Compressor problem


someone has put too much freon in it

Jan 24, 2010 | Freezers

1 Answer

I have a hotpoint deep freezer and it needs freeon. How and where do i put it.


First you need to know what kind of refrigerant it needs , and the amount of it in weight (oz,lb, gm ) If needs freon means there's a leak because all the refrigerations system are seal , so the leak has to be fixed and then recharged the unit using your manometers to check low and high pressures while you charging the system through the low pressure service valve (remember after fixed the leak to vacum the system and replace the dryer).

Aug 09, 2009 | Freezers

1 Answer

Hoshizaki km-1300skf 3 beep error code


The 3 beeps indicates that the freeze cycle is longer than 60 minutes. with the suction pressure at 20, it sounds like low on charge (freon). I believe this is an R 404-A unit. Other things to look for are: Stuck float switch (in the up position), Water valve leaking, hot gas valve leaking, txv not feeding properly, weak compressor. Look at high side pressure too. It should not go below 210 psi during the freeze cycle. Low pressure should be in the middle to upper 40's psi.

Let me know if you need more.

Jan 02, 2009 | Freezers

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