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Sub Zero 650S 3 Shutting Down/Tripping

Compressors for freezer and refrigerator both turn on, and there is power at the plug up by the compressors. Once I adjust the temp to lower it in the case, they unit will trip and shut down completely, lights, compressors, display. I push the On/Off button and it resets it and comes on right away but only will run for a little while longer and does the same thing. No error codes or anything, it just shuts down. Seems like the board gets overloaded and trips, is this correct?

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  • Sub-Zero Master
  • 842 Answers


According to your information you gave you either have an extended circuit (electrical) or a short/weak connection in the unit. If you can get to the outlet for the unit, try another outlet (different circuit would be better) this would rule out the electrical issue, either the unit or the power supply to the unit could be the issue. If you can you might want to call a subzero tech to look at this. This units main power supply into the unit is located in front on the freezer compressor, if you have a dark or blackened molex connection you would have a short there. Try the relocation of power first and see were the issue can be isolated to supply or unit.

Good luck

Posted on Apr 02, 2014


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SOURCE: Refridgerator and freezer wont get cold

sounds like a bad compressor, or at least the start device plugging in to the compressor has gone bad,

Posted on Mar 15, 2009

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SOURCE: Kenmore Elite bottom freezer refridgerator

I just went through this with my refridgerator and actually posted one of the questions. Here is what I found ........

In the freezer compartment behind the panel there is an evaporator fan which pulls cold air from the freezer and pushes it up into the refrridgerator compartment. If the fan is not working it is one of three things.. 1) there is so much frost in the fan area the fan blade is stopped and cannot push the cold air into the refridgerator compartment or the air channel is blocked. 2) there is no electricity going to the fan (usually tied to the door switch of the refirdgerator compartment, and 3) the motor is dead and will have to be replaced.

Solution to #1 - defrost but there is another problem in the "frost-free" part of the system which must be addressed or the frost will return and it will happen again in the future.

Solution #2 - check to see there is power to the fan. (most are 110VAC but some are 100VDC. Use a meter and check)

Solution #3 - If there is power, the motor is dead. Replace the motor. Be aware that AC and DC motors are different and replace per manufacture's specifications.

Posted on Nov 23, 2008

  • 1512 Answers

SOURCE: suddenly tripped off house

Hi akula, 200 ks to a fridgie, LG appliance, you must be in Australia;) Is it the earth leakage circuit breaker operating. If so, then you have a leakage problem to earth from the heater pad(not quite sure what that is, but this problem will need to be repaired. Am doing some research to see if there is anything that can be done without just getting a new fridge. Back to you soon.


Posted on Mar 21, 2008

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SOURCE: sub-zero 650 freezer gets too cold (-18). freezer

sounds like it could be a bad thermostat on the unit.

Posted on Dec 26, 2009

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SOURCE: Sub-Zero Model 690 S Refrigerator

The following blog may be of help to you, and suggests that thermisters may be the problem:
This makes sense, especially since it's your last error code.
If the unit has a damper, it could be frozen or stuck, but that's the only other thing I can think of to check.
Good luck, and hope this helps.

Posted on Nov 27, 2010

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