Question about GE Monogram ZIRS36NM 36'' Stainless All Refrigerator

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Fixya manuals evaporator coil freezing up

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It doesn't defrost

  1. Defrost control board
If the defrost function is not working on your refrigerator it could be an issue with the defrost control board. This control board oversees several internal conditions and regulates the activation of the defrost cycle. A faulty board can be the primary reason your refrigeration unit is not transitioning to the defrost cycle. Over time, the buildup of ice on the evaporator coil will prevent the refrigerator and freezer from maintaining proper internal temperature. It is advisable to first check the defrost heater and the defrost thermostat for continuity prior to replacing the defrost control board.
  1. Main control board
A possible cause for a refrigerator not defrosting, especially on more modern units, is the main control board. The main control board acts as a "brain" for the unit controlling the defrost cycle, compressor, and run time, and essentially acts in place of the defrost timer. The control board can be tested using an ohm meter for functionality and will need to be replaced if bad.
  1. Defrost timer
If the refrigerator is not defrosting the timer could be malfunctioning. Numerous times throughout the day the defrost timer should cycle the defrost heater on as a means to melt frost buildup on the evaporator coils in the freezer. If this timer does not cycle on, then it may be faulty and require replacement.
  1. Defrost heater assembly
If your refrigerator is not defrosting accurately this could be an indication that your defrost heater assembly has failed. This could cause the frost to accrue on the evaporator coils, eventually blocking the airflow resulting in the unit not cooling properly. The defrost heater assembly can be monitored for continuity using an ohm meter and will need to replaced if there is none present.
  1. Defrost thermostat
Another cause of your refrigerator not defrosting is a faulty defrost thermostat. A requirement for the defrost heater to activate to melt away frost on the evaporator coils is a functional defrost thermostat. The defrost thermostat senses the temperature of the evaporator coils and initiates the thawing process by activating the defrost heater. If the thermostat is faulty, it will not sense the lowering temperature of the coils and will not turn on the heater, resulting in an advanced frost build-up. The defrost thermostat can be checked for continuity by using an ohm meter; if there is no continuity the damaged part will need to be replaced.
  1. Defrost sensor with fuse
Another possible cause of a refrigerator that does not defrost properly is a defrost sensor with a fuse. If the defrost sensor fails, the fuse acts as a one-time-only fail safe for the sensor -- if the sensor does not shut off the defrost heater, the fuse will blow when the set temperature is reached. This safety precaution is to keep excessive harm from your unit by the heater and is a one-time use, resulting in the replacement of the entire defrost sensor.
Defrost drain problems
  1. Clogged or freezing defrost drain
If you are experiencing defrost drain issues, it is possibly due to a clogged or freezing drain that is blocking water flow to the bottom of the freezer. This will cause the defrost water to drain and drip down to the bottom of the freezer section. To correct this issue, thaw any ice or remove debris that could be causing the clogged drain or replace the drain heater.
  1. Drain heater
If you are experiencing defrost drain problems, inspect the defrost drain heater. A dislocated or burnt out drain heater will result in the drain tube freezing over. Attempt to return the part to the designated position or replace the damaged part to correct the issue. Search Over 2 1 Million Appliance Parts

Posted on Mar 29, 2015

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6ya6ya

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Posted on Jan 02, 2017

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Sea Breeze

John Tripp

  • 4656 Answers

SOURCE: evaporator coil freezing, replaced main control

It is possible you have a defective fan motor in the condenser area or evaporator area. Sometimes when they become defective they will run for a while and just warm up and stop while the compressor continues to run. I learned that one on four costly returns to the home. The cost was to me not the customer. Thanks, Sea Breeze

Posted on Aug 05, 2009

woodchuck789

Charles T Nevin

  • 4070 Answers

SOURCE: evaporator coil freezes up

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check
, defrost heater, defrost thermostat.
. If the heater and thermostat are ok it’ll be the motherboard.
How to check everything
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

Your motherboard is part 801 on this diagram. http://www.appliancepartspros.com/sect/w/y/2/wy2lkbjgmo.gif

Posted on Aug 19, 2009

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1 Answer

The coils jeep freezing up I have cleaned the filter


usually means Freon charge is low, you might have a leak..... also, filters don't catch everything. over time what gets past the filter can be trapped in underside of the evaporative coil on top of your furnace..... outside condenser coils may be caked with debris, improper air flow threw coils can produce liquid Freon back to evaporative coil causing it to freeze..
hosing the condenser down will resolve freezing up too

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Hello, air conditioners will freeze either due to low airflow.....such as dirty filter, dirty evaporator coil, weak or not running blower motor. Also, a low refrigerant charge can cause the unit to freeze up.

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Model GSS25SGMCBS coil freezes.heater checkedout ok service man changed the circuit board for $312.After 3 days, same problem again. Freeze temp ok but refrigirator sectio quit working after coil freezes....


Hello,
Control board is new, heaters ok, Check defrost thermostat and thermisters located on evaporator.
PC board not getting information to defrost properly.See site below

Also check the fill tube at ice maker . Iv'e seen these get loose and fill evaporator with water causing ice block

good luck




GE Refrigerator Repair Guide

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2 Answers

The freezer isn't making alot of ice. Can the hose behind the ice maker freeze?


Hi and welcome to FixYa, I am Kelly.

When a refrigerator slows down ice production it is usually the result of poor air-flow through the evaporator coils. The poor air-flow is due to ice build up on the evaporator coils. The ice build up happens because the unit is not defrosting properly or the evaporator fan is not running at full speed.

To answer your question "Can an Ice-maker tube freeze?" Yes, they can and do freeze but when they do freeze that is caused by a defective inlet water valve that is leaking water by when it is supposed to be shut off. It can freeze if some one set the temp control to MAX cold. Additionally when they do freeze and the Ice-maker cycles the plastic hose on the back of the unit pops out of the ice maker tube and each cycle starts porting ice maker fill water on the floor.

This may sound odd.. but. Perform a manual defrost by removing the freezer contents and directing a fan into the freezer compartment for just over 2 hours. (Makes a water mess so do not leave it unattended) The return the unit to normal service and after 8 hours start watching the amount of ice produced. (Should be normal for 2 days!) If after 2 days the ice production slows again you have an automatic defrosting problem that is causing the ice build up on the evaporator coils.

If you need any more assistance please include your complete model number in any future responses.

Thanks for choosing FixYa,
Kelly

Feb 15, 2011 | Whirlpool 25.6 cu. ft. Side-by-Side...

1 Answer

I have a dometic Roof Top Rv Air Condtioner and the evaporator coil is freezing up. Could the unit be low on freon. I also noticed the evaporator coil had a noticable amount of dust build up. My thought...


It freezes because of a lack of air flow ... and/or ... colmplicating ... high demand with high humidity.

Even worse is running the roof top with the door open in the summer (I see this all the time in the RV park where I work - I'm not saying you are doing this - but I see it all the time. What the heck, the typical transient camper is not paying for the electricity - let it run!)

I hope this helps you

thanks for your interest in FixYa.com

a

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1 Answer

Goldstar Dehumidifier compressor short cycling...


If the coil is freezing up and the compressor is short cycling,there must be a low pressure switch opening, do to either, low on charge or not enough air across the coil.

Jul 05, 2009 | Dehumidifiers

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Unit freezes up when nearing 8-12 degree superheat


check to see if your evaporator coil needs cleaning

Apr 29, 2009 | Goodman CLJ30AR32 Air Conditioner

1 Answer

FREEZING :


check your thermostat, could be set to the coldest setting and it is not cutting off.
thermostat could be broken also( stuck close)
the evaporator coil could be clogged with dirt. have it clean.

tnx 4 using fixya,

drcool

Oct 16, 2008 | LG Electronic Window Air Conditioner

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Coils freezing up on a/c unit


hi thanks for the question i would check the air filter this is a must it has to be kept clean the only other reason is if your trying to keep the room too cold the unit.has to shut down to let that ice melt so if your trying to keep the room too cold it will never shut down don't try to get 68 degrees

Sep 27, 2008 | Heating & Cooling

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