December 2, 2015

Wiring schematic symbols explained video

By Sears PartsDirect staff
Wiring schematic symbols explained.
Wiring schematic symbols explained.

This Sears PartsDirect video shows how to interpret common symbols in a wiring schematic, also called a wiring diagram. A schematic is a "map" of the wiring and current flow through the various components of an appliance. Understanding the symbols and layout of a wiring schematic will help you test each component so that you can buy the right part to fix the problem.

The video is the first in a series of videos on schematics.

  • The second video show where to find the wiring diagram on your appliance and how to decipher the lines and symbols.

  • The third video explains how to trace a circuit on a wiring diagram.

When you troubleshoot an electrical problem in an appliance, a multimeter is an essential tool. How to use a multimeter to test electrical parts video shows you how.

Once you’ve figured out which part needs replacing, look for step-by-step instructions for the appliance in our DIY repair help section.

Common symbols found in a wiring diagram

Reading a schematic can feel overwhelming—like a foreign language. But once you learn the basics, you’ll understand how schematics work. Let’s take a look at some of the most common symbols you’ll find in a refrigerator schematic and what they mean. The lines are wires. They connect the symbols, which represent components of the appliance. Following the lines will help you determine, the cause of a failure and buy the right part to fix the problem. Many appliances have at least one light. Here’s what that symbol looks like. You’ll often see a switch that controls the light.

So let’s say your refrigerator light doesn’t work, even after you changed the bulb. The wiring schematic helps you figure out which part to replace: the light socket or the switch.

If your refrigerator is too warm, but the freezer section is cold, you’ll want to look for this symbol: the defrost heater. It’s connected to a thermostat. That symbol looks like this. It’s also connected to a timer. Look for this symbol. You may need to check the evaporator fan motor. Motors look like this. If your refrigerator isn’t cooling at all, you’ll likely want to hunt down this symbol for the cold control adjustable thermostat.

If the ice maker doesn’t fill with water, you may need to check the water valve. Understanding the symbols and layout of a wiring schematic will help you test each component so that you can buy the right part to fix the problem. For more DIY help, head to SearsPartsDirect.com.

Symptoms common to all freestanding ice makers

Choose a symptom to see related ice maker repairs.

Main causes: bad bin thermistor, condenser fan failure, faulty control board
Main causes: cracked water supply line, leaky drain line, broken drain pump, cracked water reservoir, leaky ice bin
Main causes: water supply problems, control board failure, weak recirculation pump, clogged water distributer, faulty cutting grid
Main causes: wiring failure, broken cutting grid, faulty electronic control board
Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, faulty bin thermistor, bad evaporator thermistor
Main causes: failing compressor, bad condenser fan motor, faulty drain pump, bad recirculation pump, water supply problems, bad water valve
Main causes: dirty evaporator plate, untreated water supply, food items being stored in ice storage bin
Main causes: bad electronic control board, water supply problems, faulty recirculation pump, sealed system failure, broken cutting grid

Repair guides common to all freestanding ice makers

These step-by-step repair guides will help you safely fix what’s broken on your ice maker.

How to replace a freestanding ice maker cutter grid

When the cutting grid is broken, ice cubes don’t drop into the ice bin. Use the steps in this repair guide to replace a broken cutter grid.

Repair difficulty
Time required
 15 minutes or less
How to replace a freestanding ice maker electronic control board

When the electronic control board won’t activate the ice maker components, follow these steps to install a new one.

Repair difficulty
Time required
 45 minutes or less
How to replace a freestanding ice maker recirculation pump

If your ice maker isn’t making ice, the pump could be the problem. Here’s how to replace it.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all freestanding ice makers

Use the advice and tips in these articles and videos to get the most out of your ice maker.

October 26, 2016

How to repair broken or damaged wires video

By Sears PartsDirect staff

Learn how to repair broken, frayed or damaged wires in your appliances.

January 18, 2016

How to use a multimeter to test electrical parts video

By Sears PartsDirect staff

Learn how to use a multimeter to check for wiring problems in an appliance that's not working

December 9, 2015

How to read a wiring schematic video

By Sears PartsDirect staff

Learn how to decipher symbols so you can buy the right part for your problem.