Question about Sub-Zero Refrigerators

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It is making a clicking popping noise above the refrigerator behind the grate. It also sounds a bit like it is struggling but at this time the refrig and freezer are staying cool. Also I could describe it as rattling sometimes. The subzero is 21 years old

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  • Sub-Zero Master
  • 3,247 Answers

It would be more helpful to diagnose the problem if you are able to find the model no. of your sub-zero refrigerator.

The clicking noise is coming from the startup relay which might be struggling to supply the startup current for the compressor motor when it tries to turn in. It is a matter of replacing the capacitor which provides the startup current to the motor coil.

I could try and point you to the correct part nos. if you provide the model number. you can keep the rattling noise low by making sure the fridge is level and where possible the metal containers inside, if any are not touching each other.

Posted on Jul 14, 2010

  • Susan Gronske
    Susan Gronske Jul 19, 2010

    Thanks, the model is 561 and the serial no. is. M739803Also my husband does think the noise might be coming from the capacitor but he also thinks it could be the fan too. like loud air if you will. I know you must love these descriptions.

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1 Answer

Noise after the motor starts


Is this a clicking or a knock/pop sound? The knock knock sound can sometimes be helped a little bit by tilting the refrigerant filter drier (located in the compressor compartment) to a horizontal position. Ask your technician to do this for you.

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HI,

Noise can come from these areas:

The inside of the freezer
The outside back of the refrigerator
The bottom of the refrigerator
The inside of the freezer Self-defrosting refrigerators use a circulating fan to move the air through the freezer and refrigerator compartments. This fan runs whenever the unit is cooling. The fan is located in the freezer, as follows:

  • If the freezer is on top, the fan is on the back wall, near the top or bottom, in the center of the freezer.


  • If the freezer is on the bottom, the fan is on the back wall, near the top of the freezer.


  • If the freezer is on the left, the fan is on the back wall, halfway up or near the top.


Over time, the fan may become noisy--usually making a chirping or squealing sound, though it may make a loud groaning noise instead.

To find out if the fan is causing the noise, just open the freezer door and push in any fan/light switches. If the noise is louder when the door is open, the evaporator fan motor is the cause. You can't lubricate or repair this motor. You must replace it.

The outside back of the refrigerator There are three components on the outside back of the refrigerator that may become noisy: the compressor, the condenser fan motor (if self-defrosting), or the defrost timer (if self-defrosting).

  • The compressor is a football-sized case with no apparent moving parts. You can see it on the outside of the refrigerator at the back near the bottom. It is usually black and has black or copper-colored tubes and various colored wires attached to it. If the compressor is the device making noise, there is probably no repair that will reduce the noise. You will have to replace it--which can be quite costly.


  • If the condenser fan is making noise, there may be a build-up of lint or other debris on the fan blade. The fan is located near the back of the machine, sometimes behind a thin panel. To clean it, first unplug the refrigerator, remove the thin panel, and use a soft bristle brush to clean it. If there is no lint build-up or debris on the blade, you will have to replace the motor.


  • The defrost timer is often located at the bottom of the refrigerator, near the front and behind the kick plate. Occasionally the electric motor inside the timer may become noisy. The timer must be replaced to solve this problem.


The bottom of the refrigerator Noises detected at the bottom of the refrigerator almost always originate from the back of the refrigerator. However, sometimes the drain pan under the refrigerator will rattle. You may need to tape the pan in place to stop a rattle. Also see the “Outside back of the refrigerator.”

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1 Answer

My Maytag Wide by Side refrigerator has been making loud popping noises and now the freezer is not cooling properly. What is causing this?


Does not sound good. We need to find ou where the popping noise came from first. Not cooling is because it sounds like the popping noise is from that area but for sure that area. It could be a failed control board and shorted out the compressor relay.would like to go and do this yourself of have a technician like myself lead you through this? I'm going to get the service manual and if you would like a copy I will get it for you, Thanks and let me know soon, Sea Breeze
spotted cow make sure the model number above you post is correct before we begin

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Dear Customer

Please perform the following

If it's cooling ok, they're probably normal sounds. Modern refrigerators can make many noises, most people aren't home long enough to hear them. A popping sound could be defrost water hitting a hot defrost element, or refrigerant making noise in the cooling lines. If it's working ok, ignore it. Please rate this,Thank u

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