Sub-Zero 550, 600, 611, 632, 650 Service Manual

Sub-Zero Refrigerator

Service Guide

A Step-by-step guide

Answers to the most common repair and service questions
for your Sub-Zero

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Overview

The most common question is, “How serviceable is it?”

Sub-Zero is a family owned company based in Wisconsin. Family owned means you care
more about the label than a multi-national would. Incredibly, every Sub-Zero is tested
before it leaves the factory.

Sub-Zero is notoriously slow in developing new products, because their development and
quality program is so methodical.

The Most Reliable Appliance Brands: Read more »

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Table of Contents

Troubleshooting

A few quick tips for to figure out what may be wrong with your Sub-Zero

Repairs

Step by step walkthroughs for common repair issues

Repair or Replace?

How do you know when it’s time to make that choice?

How to Buy or Get Service

Quick tips to help you consider a new Sub-Zero purchase

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Troubleshooting

A few quick tips to help you figure out what’s
wrong with your Sub-Zero

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Troubleshooting

Products

Sub-Zero 500, 600, BI and PRO series.

Troubleshooting

There are a few quick tips to figure out
what may be wrong with your Sub-Zero.
Sub-Zero is one of the few products that
will always be worth repairing 15-20 years
old.

Plus, we will give you step-by-step help on
how to repair the most common issues.

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Troubleshooting

Basic Refrigerator Operation

Let’s narrow it down. Basic refrigerator operation is as follows. Power on, set freezer temperature

to 0º and refrigerator to 38º.

Note that the twin compressor system operates both sides from a single power source but are
separate when it comes to operation and coolin g.

Now you need to narrow down which compartment is having trouble and select the correct
problem at hand.

What’s Wrong?

• Not Cooling?

• Water Filter?

• No Power?

• No Ice or Water?

• Light Switch?

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Not Cooling?

Why is my Sub-Zero not cooling properly ?

Models: 500, 550, 600, 611, 632, 650, 690, BI-30, BI-36, BI-42, BI-48, PRO48.

The number one reason for a no cooling situation is a clogged condenser. The symptoms would be that
both the fridge and freezer section are losing cool temperature. Also, the area between the doors
would be getting hot.

If the refrigerator isn’t cool, check to see if the light comes on when you open the door. Next, check to
see if the thermostat or display control is set properly. If both of these are OK, then check to see if the
compressors are running. Sub-Zero is one of the few manufacturers with a twin compressor system,
which means your fridge side can be not operational and your freezer side can be working fine (or vice
versa).

See if the compressor motor is running. The compressor is in a case with no visible moving parts. It is
usually located at the top of the Sub-Zero unit (except 400 and 700 series) and this is a dual
compressor system, the right compressor is the fridge section. If it’s humming or making a steady noise
and your refrigerator is not cooling properly there could be a problem with one or more various
components.

The most common is the condenser is clogged with lint, hair, debris and it needs to be cleaned. This is
a simple process and should be done every six months.

Need to replace the filter? Walk through it in our repair section: Read more »

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