Question about Sub-Zero 30.1 cu. ft. Cabinet Depth Side-by-Side Refrigerator 632 / F

3 Answers

Sub-Zero 511 Freon Leak

My 10 year old Sub-Zero 511 has a very slow freon leak in the refrigerator side. About 3 years ago the service tech topped if off for $200, and suggested finding and repairing the leak could be very expensive. Since it's an R134a model, I figured I could do the occasional top off myself. About every 6 mos. I check the low side pressure and add a little freon. Takes about 10 minutes and solves the problem. When the tech did the job, he said "I like to fill them to 5 or 10 psi". I've been using 7 psi, which seems to work fine, but would like to know what the correct low side pressure should be, both for the fridge and the freezer.

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  • grapeapes8 Sep 04, 2008

    I also have the same model Sub Zero. It is an R134a model and the refrigerator can not cool below 52 Degrees. I have cleaned the coils, the fan is running, but it will not cool. I also noticed some outlets leading into the compressor. How do you add the R134a? Is a special attachment needed, as the only attachments I have are for automobiles

  • ctw886 Apr 29, 2009

    How much will it cost to change the Evaporator (part under warranty)?

  • Mart Hyatt Dec 25, 2012

    I have a Sub Zero model 542 built date jan 1998. It has been having trouble for 5 years and two service calls for the Fidge is not cooling, but the freezer works fine.



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replacing leaking evaporator on Sub Zero R134A

Posted on Jun 27, 2015

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Don't let the EPA know about you adding Freon to your Sub-zero.. you can get yourself into trouble... add freon to a system that leak is a big no no... you need to repair the leak... most Likely the Leak is @ the Evaporator... Sub-Zero give you a 12 year Warranty on Parts... the Evaporator is cover.. so I would Fix the Leak, stop adding Freon. .

Posted on Nov 25, 2008

  • Billf810 Sep 13, 2011

    Can you email me the correct number for subzero. They told me that the warranty in 10 years and I just missed.



Paul, we have the same problem with a built-in Kitchenaid and the price of replacing the fridge is out of sight for us. Where did you get the equipment to check the freon and replace it?

Posted on Jul 22, 2008

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Related Questions:

1 Answer

Why is vacuum condenser light blinking

this is usually a leak in the evap coil,if it's under 12 years old the coil is still under warranty.sub zero is a great machine,the only problem is that the evap coil behind the back wall in the fridge section leaks or a hole develops.the freon leaks out and the fridge section will continue to get warmer,the vacumm coil lite will come on.i've seen this happen to some machines that are 3 years old it need to get a tech in,he'll recover the gas,evacuate it,replace the coil and add new freon in,if it's under warranty it will be 650 to 750,or if not under warranty 11 to 12 hundred dollars to repair.

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it sounds as though you have a fridge that is low on freon. If the ice is appearing mostly to the left, then thats surely your problem. if it goes all the way across, you may have a bad evaporater fan motor, fan motor switch, bad cold control, or just a door that isn't closing or sealing properly. If its the ice mostly to the left side, it probably means your evaporater is leaking the freon. I am assuming you have a model that has a cold control on the back wall, not the electronic display by your description. If your unit is less than 12 years old by the installation date, the part will still be under warranty (sub zero has an unmatched 12 year sealed system parts warranty) but the labor and freon will not be. The repalcement of that evaporater in my area usually runs about $450 with labor, freon and trip all together. It is a repair you cannot do unless you have an acetlyn torch and some silver-soldering/ brazing ability. If your model is in fact the newer style with the electronic temp display, call sub zero up (the # is on the model/serial tag in the door jamb) and tell them wahts going on. If it is in fact an evaporater leaking on this style, they will most likely pay the bill for you even if its well out of the 5 year full warranty. If you want to know for sure, remove all the shelves, then remove the cover over the lights. Then if its electronic remove the 3 screws holding the top of the back panel and tilt the panel out to you and pull it up and out: if its a dial type, remove the 2 screws holding the fan cover and then tilt the back wall out to you and lift it up and outwards, but not too far as it wil pull the wires of that control knob (cold Control) Look at the coils back there and see if the coils are frosty. If they are only frosty on the upper left of the coil, its low on freon and needs an evaporater. if its frosty all the way across, top to bottom, you need a cold control, or possibly a fan or fan switch. Hopefuly you can wade through all this. Just post back if you have any questions. Good Luck!

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1 Answer

Does not get cold enough

Thanks for choosing FixYa and welcome to the site. You may be low on freon or you may have a freon leak, especially if the fridge is a few years old. I would try adding freon first. At the least, you will know that is not the case. If it helps and goes bad again, it will let you know that there is a leak.

May 04, 2011 | Sub-Zero Refrigerators

2 Answers

I have had a repairman look at this refrigerator and he claims there is a slow leak. Can't a new freon line be installed?

Usually it takes too much labor to fix that line, Kitchenaid built in refrigerators have capillary tube which licks at the back by suction line tube. Refrigerator will need ti be moved out from cabinet in most cases. Tech would want to give You a warranty, so they usually would replace the whole sealed system for big money, but most likely it last 10-15 years. If They will fix one pipe, next year You might call him back, leak might be in different pipe, but it will be the same expensive (due to labor). Check my video out. A Year ago found leak at evaporator, explained to customer better to do the whole system, but he wanted only evaporator replaced since its so obvious. Now we will replace the whole system, Evap is ok, heater too, but now, capillary tube + suction line + drain pan heater loop(freon pipe). If You watch video thru till the end, you will see where heater on old evaporator touching evaporator coil in multiple bents.

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1 Answer

My sub-zero refrigorator is icing up on the first

There could be some other reasons for the ice.
1 bad or cracked door seal,have a look at the door seals.
2 Defrost timer may need to be set longer.
3 T sat set to low or not working properly.

Unit may be low on freon also,causing a lower pressure which would cause a lower tempreture,this occurs with a small leak or a pin hole leak.Once enough freon leaks out it will warm up and no longer work.

You can have a leak check done by a service person.

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1 Answer

Building up ice in refrig side. also service light is flashing. what can I do to fix prob?

if the ice is only between 5 and 10 inches log. your problem is the evaporator. you have a leak freon. better call a tech for repair.check the warrantty. subz. have the best warrantty on the market. 12 years in seal system parts. (COMPRESSOR. EVAPORATOR HEATER EXCHANGER. FILTER DRIER. PARTS HOLD FREON.) if the ice is big like cover the whole back wall. you have a thermostat problem. or thermister. is the same. depends on the serial num. is really hard to raplace the tsat. thermisters really easy. and cheap

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Ice is forming inside the refrigerator

You have a freon leak in you evapator. Call an authorized Sub Zero service company it will be coverd by you sealed system warranty..

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5 Answers

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found leak at evaporator, made a video how to replace it on Sub Zero Vacuum Condenser Light stayed on

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