Iced Coil Repair Grand Rapids MI
How to check for an iced coil:
Sometimes an iced coil is obvious; ice can build up past the coil, spread past the evaporator fans and into the interior of the cabinet. After ice builds up, the first symptom is often a “tinging” noise, which is the fan blade hitting the ice. Also, the temperature in the cabinet will drop somewhat but usually remain consistent within a degree or two.
Sometimes, ice can build up so bad that it will damage the evaporator fan motor, fan blade, or possibly even the coil itself. The expansion of ice can damage the fins of the fan blade and possibly create a hole in the coil.
The ice may only build on the coil itself and may be difficult to see without removing the evaporator cover. No matter what, do not remove the evaporator cover!
Take a mirror to the back of the unit. Behind the fan cover, there is oftentimes a 2-5″ gap allowing room to see the coil with a properly positioned mirror. Doing this will often reveal if ice, frost, or snow buildup is present on the fins. Please do not stick your hands in the unit if you don’t know where to look as there are electrical components, defrost heaters, and fan motors that could hurt you.
What causes iced evaporator coils?
There are many reasons a freezer or cooler coil builds ice. Most of these are user-related and/or user created.
1.) RIPPED DOOR GASKET: When a unit has a ripped or torn door gasket, the unit cannot efficiently exchange heat as the cool air leaks out. The compressor runs continuously trying to maintain box temperature but can never satisfy. This will assuredly build ice and frost the coil over.
2.) DOOR LEFT AJAR: This is probably the most common and typical cause for an iced coil.
A. Sometimes the customer accidentally leaves the door ajar after grabbing a product and simply walking away.
B. Often times, something falls in the door closure area and keeps the door from closing fully.
C. Door closure/component failure. i.e., the “self-closing” spring, latch, or adjuster fails or comes out of adjustment thus preventing the door from properly closing.
D. The unit itself is not level creating a gravity-related “door ajar” situation. Making sure the unit is level will ensure proper door closure via gravity.
3.) LOW ON REFRIGERANT: An iced coil can become an issue when a unit is low on refrigerant. This is when the coil cannot exchange heat equally across the fins thus creating an icing situation. Of course, if you are low on refrigerant, you most assuredly have a leak too!
4.) IMPROPER ADJUSTMENT: This is a more technical problem and usually follows the technician that just left after charging you $300-500.00 for faulty repairs. Some freezers have what is known as a TXV valve or more commonly referred to as an expansion valve. This is a metering device used to control or regulate the amount of refrigerant passing through the evaporator. Some technicians may feel this needs adjusting. Unfortunately, a lot of technicians automatically make this critical mistake while troubleshooting a different problem. If the TXV valve was improperly adjusted, it will certainly cause and create an iced coil.
5.) DIRTY CONDENSER: This is the most common problem we see with freezers. Lack of proper maintenance can cause iced coils.
6.) DEFROST TIME: Several defrost issues can cause an iced coil such as:
A. Malfunctioning or inoperative defrost time clock.
B. Improper timing/programming of defrost clock.
C. Insufficient duration of defrosting.
7.) EVAPORATOR DRAIN TUBE ISSUE:
A. Faulty evaporator drain heater.
B. Plugged drain tube.
C. No trap or improper vent for drain tube causing/creating an airlock.
8.) FAULTY or FAILED EVAPORATOR FAN: This can also include failed door switches that are designed to shut the fans off once the doors are opened thus preventing warmer air to be sucked in while the doors are opened for an extended period of time.
There are other technical reasons for an iced coil but the ones we’ve mentioned are the most common and typical causes.
Thank you for your great service. We struggled with our freezer not working correctly until you came and figured out we had a couple of issues that needed corrected with the unit. The unit is working fine now. Thank you.
We’ve worked with rick for years at UCOM and over that time he has been amazing. He is always prompt when we have issues and does great work. We highly recommend him and the Freezer Depot.
I have been doing business with this company for over 3 years. They service all of my coolers every 6 months or so to make sure they are working properly. I have bought 3 coolers over the years some new and some used. The level of service and promptness to service calls is top notch. Great family owned company to work with!
Just wanted to say thanks for coming out to Ann Arbor to take care of the problem with our freezer. I took your invoice to the other company who had misdiagnosed it, and they gave a full refund of the charge for that day. (I’m still out their other fees for the Kelvinator that we traded in to you, but oh well.) In the future we will call a refrigeration tech in our area as you suggested, not heating/cooling. Thanks for the help and if you need any testimonials for your website we can provide one 🙂
Buying through the internet is often a tentative experience at best but with Rick and The Freezer Depot it was pure pleasure. Initially, I was shopping for a two door freezer and two door cooler but then decided on getting three door units. Rick was informative with the answers to my questions and made recommendations when asked. He made my purchase extremely comfortable and easy. The units I purchased needed to travel to Fairbanks, Alaska and Rick did an excellent job packing them to ensure their safe arrival. They are an excellent addition to our store and are helping to increase sales. You will be my first choice with future needs. Thank You, Rick.
Thank you for getting me the cooler. We had some really cold icy weather last week so fedx was unable to deliver Monday. I have it now in place and it looks good. Thank you for doing such a great job wrapping and palleting the cooler. I will try to send a picture with it filled with product. Thanks again
We have been using Rick and his son from the Freezer Depot for several years now. They handle everything form our preventative maintenance, new and used equipment sales, to warranty work and repair work. Equipment never seems to fail at a “good” time and we have always had a quick response and work completed at a fair rate.
Rick provides personal service and timely repairs. I use a lot of refrigeration in my business and trust Rick to maintain it. He is fair and values the relationship side of the business as well. I have also purchased numerous freezers from him that have saved me thousands over buying new.
Rick has been a great resource for me in figuring out the changing refrigeration needs of my small business. He always has a good selection of units, great service, and straight, honest answers. And he delivers!
Fast response time! Knowledgeable staff! Very professional and easy to work with! Cost effective! Weidenfeller Refrigeration has been my sole provider of service for the 4 industrial coolers and 1 industrial freezer on my blueberry farm for the last year. Always available at a moments notice and consistently shows up in my time of needs. Emergency after hours service was also available to me! They will take the time to explain the problem in a way anyone can understand, offer different solutions, and leave it to the customer on exactly how to handle it. Rick has even saved me money several times by maintaining several wear and tear parts rather than just replacing them. 5/5 would recommend to friends, family and other industry professionals.
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