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Member Since 19 Jul 2010
Offline Last Active Aug 31 2012 02:58 AM

Topics I've Started

subzero 532- frost on back wall normal ?

20 August 2011 - 04:55 AM

subzero 532 fridge evaporator used to ice over top to bottom, so i replaced the thermal control.

before, there used to be thick frost and ice on the visible side of back wall. Seemed like thermal control didn't know when to defrost.

Now that I have replaced the thermal control, there's a thin layer of frosty ice on the back wall.
I don't remember how it was back in 1993 when I first bought it, but is it normal for subzeros to get a thin layer of frost on the back wall ?

Sub Zero 532- what is this part?

30 August 2010 - 06:11 PM

Does that wire sticking out serve a function?

i'm wondering what happens when it gets iced over....

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subzero 532 refrig evaporator iced over. Which part to replace?

23 August 2010 - 11:06 PM

Can someone tell me what might be wrong, and which part should I replace?

I haven't opened the back panel, but I can guess the refrig evaporator coil is iced over, since the ice has wrapped around the front of the back panel.

the fridge knob is set at 5.

there is a wall of ice on the food side of the refrig, just above the fruit basket.

also, there's ice next to the thermostat dongle thing. see pics.

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Wall of ice next to food:
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subzero 532 fridge-side light switch part number?

20 July 2010 - 09:46 AM

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fridge light sometimes doesn't turn on when door opened.

Bulbs are not bad. Occasionally, light will work for part of the day.

replacing light switch = solution???

what is the part number for it?


sub zero 532- fridge temp fluctuates. sometimes seems not to be working

19 July 2010 - 10:35 PM

Problem: Fridge temp fluctuates a lot over past 3-4 days. acting finicky.

532 bought new in 1993.
freezer side 100% no problems.

During the past 4 days, we had 100 F weather. Inside the house, kitchen temp was ~89F. so the compressors were running longer than usual.

3 days ago, I noticed the food wasn't cold enough.
fridge temp felt like 55-60F. juice and milk, everything, was barely cool to touch. not cold like it normally is.

I turn temperature knob from 4 to 6 and wait. no difference. I assume fridge is dead.

evaporator fan inside fridge spins at full speed when I press the door switch.
however, Yesterday afternoon, for the first time, the evaporator fan didn't spin when I pressed the door switch.
Took all my food out, set the temp knob to 8, and went to bed.

Woke up this morning, and my empty fridge was cold again. evaporator fan was spinning normally. I turn the knob back to 5.

For a few hours this afternoon, it seemed the fridge temps were warmer again. all food was merely cool to touch. not cold.

right now, almost midnight, I check the thermometer in a bowl of water, middle shelf. It says 42F, with the knob set to 5.
Right now, fridge seems to be working.

so, to sum up, over the past few days, fridge seems to work on and off, with estimated 15 degree fluctuation in temps- between sufficiently cold (usually in evening), and not cold enough. I don't open the fridge frequently.

-condenser and evaporator fans are running normally.

-condenser coils have been vacuumed recently.
-the timer/thermostat?? ticking thing in the front seems to work fine- gears are spinning. occasionally stopping.
-I hear the compressors start and stop infrequently- i assume this is normal too.
-there's no frost anywhere in the fridge, if that matters.

Anyone have an educated guess as to why the fridge stays barely cool for part of the day, and then seems to return to normal during the evening ?
it never did this until a few days ago

The repair guy is coming in a few days, but I'd like to get a 2nd opinion/guess from you guys. What would you check first?

by the way, is that white panel behind the left side of the grille necessary? It seems to hinder cooling of the compressors. Can I just leave it off?


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