How To Test Ice Maker Control Module

How To Test Ice Maker Control Module

No matter how well your fridge performs, if you’re not getting the ice cubes you want, there’s something wrong with your fridge’s control module. If you’re not experienced in repairing or replacing hardware in your appliance, we recommend you call a qualified repairman to help you with this repair.

However, even if you are experienced in fixing fridges and ice makers, this process can be tricky, so take your time and make sure every step of the way you know what you’re doing before proceeding.

Step 1: Preparation

Check if there are any warnings of abnormal noises or smoke coming from your freezer. A fire hazard is possible at an early stage.

Step 2: Shut down power supply to your refrigerator by unplugging it or turning off main breaker.

Step 3: Open freezer door; look inside for any tool you can use for testing and removal of ice maker control module like a flathead screwdriver and tweezers, if found proceed with next step.

Step 4: Remove front panel from bottom half of fridge cabinet using screwdriver and/or tweezers along with wearing gloves.

Step 2: Turn off electricity

Before doing anything else, make sure that you are turning off the electricity to your ice maker. You want to be working with a completely safe environment and electricity can be very dangerous if not handled correctly.

If you are not sure how to turn off electricity to your ice maker, please contact a professional or an electrician as soon as possible. Following that, ensure that no one is touching any of your exposed wires in your house.

There may also be protective coverings over some wires which can cause quite a shock when they are uncovered while still receiving power through them.

A small amount of current through certain wires and metal objects can lead to major problems such as electrical fires which can cause severe damage to property and even injury or death.

Step 3: Remove Lock Nut and Connector

Using a 7/8-inch wrench, loosen and remove lock nut from wire connector. If connector is frozen in place, use a small flat-blade screwdriver to pry it off. Remove all wires from control module and reinstall lock nut onto wire connector with pliers.

Using needle nose pliers, pull wires through hole in side of ice maker housing. Attach wire connector to control module by pushing locking tabs on both sides of connector into grooves on either side of control module until they click into place.

Tug gently on each wire to make sure it is secure in its connection to control module. Securely tighten connection using needle nose pliers; do not over tighten as you may damage wiring or cause electrical short.

Step 4: Unplug the connector

Now unplug your fridge from power. This will help you rule out any problems with your new ice maker. Before attempting to fix your unit, it’s best to rule out any wiring issues by unplugging both ends of your connector plug and allowing all components to completely cool down.

Next, take an ohmmeter and set it to measure resistance between contacts 1 & 2 (there should be none), then repeat test on contacts 2 & 3 (there should be no continuity here either).

If contact resistance is below 200 ohms, or there is continuity between contacts 1 & 3, then you have a wiring problem that should be addressed by a professional refrigerator technician.

Step 5: Remove screws holding the panel

There are four screws holding down a metal cover over your control module and water inlet valve. These screws should be removed with a Phillips head screwdriver. Underneath these screws are two terminals that will need to be loosened.

Remove them with an allen wrench or socket head screwdriver. Underneath one of these terminals is a small water passage hole that you should not block off, allowing water to run through it when needed.

It is important to remember how everything was set up before removing any components so it can be put back together quickly and easily!

Keep track of which screws go where because once they are loose they can roll away on their own accord! You do not want to spend hours trying to figure out what goes where, just trust me on that one…

Step 6: Remove old ice maker control module

Turn off ice maker. Unplug ice maker and water line connections. Disconnect wire harness connectors and remove control module from mounting plate with wiring, being careful not to disconnect any wires from main circuit board. Remove all mounting screws, carefully lift up and out of unit.

Reconnect wire harness connectors, making sure each is tightly connected to pins on main circuit board . Secure control module in mounting plate before reconnecting water line connections (Drain hose, supply tube, drain tube) and plugging in power cord.

Check for leaks at all connections before turning on power switch to test for further operation.

Related: The 10 Best Undercounter Nugget Ice Makers of 2022

Step 7: Install new ice maker control module

Now that you’ve verified your problem is with the module, it’s time to replace it. Use your old one as a guide and determine which wires go where. Most of them will just be labeled, but some might not be.

Unplug all wires from your old control module and label them so you know how to connect them back up later on. Then remove all of those screws and any other hardware holding your control board in place (you did save everything, right?).

Now gently pull on your control board until it comes out enough to reach its wiring harnesses—make sure to keep hold of any remaining screws!

Step 8: Reinstall parts in reverse order

Determining if an ice maker control module is malfunctioning can be a bit of a hassle. You have to call in a professional, and it may not be possible to fix on your own. Still, you should check for yourself to see if it is time for new equipment.

Most control modules don’t just go out at random; there are usually specific reasons behind failures and other malfunctions. You can avoid unnecessary replacements by figuring out what went wrong before it breaks again.

Related: The 10 Best Portable Ice Makers of 2022

Step 9: Check for leaks and tighten connections

When you’re satisfied that everything is hooked up correctly, take a few minutes to check your plumbing. Look for leaks or drips. If there are any, tighten down any loose connections before you proceed. Turn on your faucet and run some water through it—also look out for leaks or drips here as well.

This simple step can save you a lot of time and money over time if you’re able to find and fix these leaks now instead of waiting until after it passes through your ice maker.

Final Word

If you’re handy with a multimeter and know how to use it, then testing an ice maker control module is actually pretty easy. If not, then have someone help you who can do both.

The best way to test an ice maker control module is simply by monitoring its outputs with a multimeter. From there, you can take notes about any abnormalities or rule out a bad icemaker. It’s simple stuff.

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I'm Devin. I'm a wine enthusiast, researcher, and writer. I love to write about various topics during my free time, but when I'm not working you can find me traveling the world or reading, watching movies, or swimming.

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