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Clogged defrost drain tube

Since we have an ice maker I see a problem removing the back of the freezer compartment to get at the drain tube. Can you help?

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  • revilos Apr 30, 2008

    After I took down the ceiling assembly in the fridge, I noticed a 3/4" 90 degree tube that goes to the bottom behind the back. I believe I need a way to get at the tube from the freezer.

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You can access the drain tube from the back of the refrigerator. There is normally a trap located after the drain line exits the freezer compartment. Clean out the trap and it may solve your problem.

Posted on Apr 29, 2008

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1 Answer

Water dripping in fridge from below frezer


There is a drain tube that runs from the freezer/ evaporator compartment that allows ice melt water to drain from the defrosting cycle. Often times that drain hole will become clogged with food debris, glass from a broken heating element, paint chips from scaling and mildew, etc. When that drain hole gets clogged the water has no place to go except down into the fresh food compartment. Unplug the ref and remove the food and ice maker and racks. Remove the freezer back panel and look for a drain hole and clean it out. I use a wet/ dry vacuum at first and if the clog is deeper I will use compressed air to blow the line clear. You can also use a water hose with water pressure. Best done outside of the house.

Feb 09, 2014 | Refrigerators

1 Answer

Ice sheets build up on the bottom of the freezer. Water also seems to be dripping into the refrigerator from the freezer. Not sure what the problem is and looking for help!


Hi and welcome to FixYa, I am Kelly.
First off if you have an ice maker this sheeting of ice is most often caused by the ice maker inlet water valve bypassing water when it supposed to be shut off. You can check for ice in the rubber tube that fills the ice maker. If it is frozen hard with ice most likely you have an inlet water valve failure. The valve is not repairable. The only remedy is to replace it.

Second reason for ice build up on the bottom of the freezer is a clogged evaporator drain. If you see ice for sure under the evaporator coils then the drain is clogged. You clear the drain by unplugging the unit.. removing the freezer contents and directing an external fan into the freezer compartment for just over 2 hours. While this is happening... open the back of the unit by removing the fiberboard cover and cleaning out both the drip pan and the END of the compartment drain tube. I use a wet or dry Vacuum for this task. When the 2 hours of manual defrosting is completed.. use the exhaust of the vacuum on the very end of the compartment drain tube. This will float out any debris that was in the evaporator drain funnel and make sure that the compartment drain tube is clear. Make sure to clean the condenser coils and fan in the bottom of the unit while your cleaning the drip pan.

After all of the above reassemble the rear fiberboard cover, wipe up any water mess in the freezer compartment and return the unit to normal use.

Since you did not include a model number I am unable to provide you with an exact reference source for the inlet water valve. You can however use the following sites and enter your model number for parts information:

http://www.searspartsdirect.com

http://www.appliancepartspros.com

http://www.repairclinic.com

Thanks for choosing FixYa,
Kelly

Jun 27, 2011 | Whirlpool 21.0 cu. ft. Top Freezer...

1 Answer

Frigidaire upright fridge freezer.The drainage hole at back of fridge part of item keeps freezing over blocking drainage from fridge


Yrur model number is missing the last three digits.... I will use FRT21H8CB1 as the example model number.
You need to do a total manual defrost with a catch basin and comprtment drain cleaning.
- Unplug the unit
- Remove fgreezer contents
- Direct an exteranl fan into the freezer compartment for just over 2 hours to ensure the compartment drain tube has defrosted.
- During the defrost period... open the fiberboard panel on the lower back of the refrigerator and clean out everything, Condensor coils, catch / drip pan (Called pan-defrost for parts), and the END of the compartment drain tube.
Model reference:
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5158190&diagram_id=1311449#d1311449

Defrost pan Item 26 of above link needs to be cleaned.
Coils Item 1 need to be cleaned
Fan blade Item 61 needs to be cleaned.

The evaporator trough, drain item 17 also should be clear. Here is what you can do without tearing everything in the back of the freezer apart. Once your sure the comprtment drain tube (no item number / bulk hose) is clean on the end. Use the exhaust of a Vacuum cleaner and the hose to force air UP through the drain hose and float out any debris from the trough drain. Have a 2nd person listen for air flow into the freezer compartment if possible. The biggest problems with freezer compartment drains is the END of the hose at the defrost pan underneath the unit clogs up and then the compartment drain hose just loads up with scum. Then the freezer stops draining and you have the symtom your describing.

After the manual defrost and cleaning return the unit to normal service.

Having said all of that... if the refrigerator then freezer starts warming up in 3 - 4 days... you may have an automatic defrost problem causing the icing. I.e it is not defrosting so the evaporator eventually ices over and forms an ice block in the back and bottom of the freezer compartment. Usually if there is an ice block that forms you wil hear the evaporator fan striking the ice build up.
If this is happening... for sure there is an automatic defrosting problem and your stuck doing a manual defrost ever 3 - 4 days until repairs are complete.

One more note.. if there is NOT any compartment drain tubing visible... your unit may port evaporator tray water down the back of the fresh food compartment to the defrost pan under the unit... just clean everything that serves as a drain function best you can during the manual defrost and cleaning process.

Thanks for choosing FixYa,
Kelly

May 23, 2011 | Frigidaire FRT21H8 Top Freezer...

1 Answer

Maytag MZZD2766GE side by side refrigerator: Water collects and freezes on the floor inside the freezer. Then apparently some of the ice defrosts as I get water on the kitchen floor under the...


Hi and welcome to FixYa, I am Kelly.

This is caused by a clogged evaporator drain that is item 5 of this link:
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=47966
It can be clogged either in the funnel area or at the end of the tube underneath the refrigerator.
Item 5 catches water from item 14 this link:
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=47966&diagram_id=28494316#d28494316


Your evaporator drain is clogged. (how to clear it)

  • Unplug the unit remove the freezer contents and do a manual defrost by directing an external fan at the freezer compartment for just over 2 hours. (Makes a water mess so be prepaired) This is a must do!
  • Remove the rear fiber-board compressor and condensor coil cover and locate the compartment drain tube in the drip pan. Make sure the end of the tube is NOT blocked. Clean as necessary.
  • After the 2 hour period... use vacuum forced air OUT pressure on the end of the drain hose in the drip pan. Have a 2nd person listen for airflow in the freezer compartment. This will float out any debris from the compartment drain funnel.
  • Clean the condensor coils and fan while the unit is unplugged but do NOT use anything sharp.
If you can not get air-flow up through the compartment drain funnel underneath the evaporator coils you will have to remove the access panel and remove the debris from the drain funnel.

Return the unit to normal service after cleaning. Watch for more ice build up after a week. No ice blocks after a week... no worries. Ice under the ice-maker... replace the inlet water valve due to it bypassing water when in the OFF mode.

Thanks for choosing FixYa,
Kelly

Mar 01, 2011 | Maytag MZD2766GES Side by Side...

1 Answer

Water leaks from the back of refrigerator on the inside


Hi and welcome to FixYa, I am Kelly. I will comment but need a good model number to pass along correction steps applicable to your exact unit. This is usually caused by a evaporator drain.that is clogged with ice. What you can do is either use a hand held hair dryer or a fan to defrost the ice build up. I will tell you that it take much longer than you would tink to defrost the drain. The water acts as an insulator for the ice so you have to remove / collect the water as it defrosts to speed up the defrosting process. I have found the easiest way is to just place a fan directed into the freezer compartment for about 2 hours to do the defrosting trick. One may units the only way to gain access to the drain to remove any debris is to remove the rear evaporator cover. This means that the shelving and ice maker also have to be removed just for compartment drain access. When defrosted.. a cup of hot water should pass through the drain down to the plastic catch basin under the unit in less than 8 seconds. Sometimes the upper drain is clear but debris / gunk has clogged the very end of the drain tube under the unit so water stands in the drain even after defrosting. The only way to clear it is to remove the clog at the end of the line. Usually it takes a piece of wire to break through the debris but it all has to be removed and cleaned out. Once you do this check how long it takes for the cup of hot water to pass from the freezer drain to the catch basin.
This should stop your leak unless you have ice maker over flow problems. (Different solution)
If you need more assistance... I need a good model number in your response.
Thanks for choosing FixYa,
Kelly

Nov 14, 2010 | Whirlpool 21.0 cu. ft. Top Freezer...

2 Answers

Water dripping from freezer into refrigerator area and frozen water in freezer


The defrost cycle is melting ice that will not go down the drain tube in the rear of the freezer. This can be a clogged tube due to debris, organic growths or ice blocking flow. What doesn't end up dripping into the fridge ends up freezing in the freezer compartment. Make sure the fridge is level or tilted back slightly.

Unplug the fridge from power. Remove the contents of the freezer and remove the ice maker, back wall plate and floor plate in the freezer section. Remove ice build up on the floor and tray in the freezer by thawing and soaking up water. Flush hot water (use a turkey baster to get at it) at the opening of the drain hose that is connected to the tray to thaw any ice.. once flowing to the evapraor tray under the fridge, mix up 1/2 oz of bleach and 4 oz of water and pour down the tube to kill any bacteria.

Reassemble and restock the freezer. Monitor the temperature of the fresh food (34 deg) and freezer (0 deg) compartments. If you notice the temperatures start to climb, there may be a problem with the defrost timer, terminator, etc. and may require a pro's help.

Good luck!

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1 Answer

My refridgerator box fills with water


common issue.....sounds like a drain clog in the freezer compartment above. remove the freezer rear panel and totally defrost the evaporator area, directly under the evap you see( under all taht ice) a small drain hole that has become frozen over, try defrosting with either a hair dryer( not a heat gun too much heat youl melt everything) or by pouring hot water donw the drain until you get a free flow of water down the tube. after its clear reassemble and you should be fine

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1 Answer

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sounds like a drain clog in the freezer compartment above. remove the freezer rear panel and totally defrost the evaporator area, directly under the evap you see( under all taht ice) a small drain hole that has become frozen over, try defrosting with either a hair dryer( not a heat gun too much heat youl melt everything) or by pouring hot water donw the drain until you get a free flow of water down the tube. after its clear reassemble and you should be fine

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1 Answer

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Check the ice maker. sometimes they get cracked a will leak water into the freezer compartment. Also check the ice maker fill tube for leaks or someone could have spilled something. Although this is tipical of a clogged drain. What happens is when the fridge go into derfost, it will melt all the frost that is on the evaporator, turning it into water. The water drains down to a trough under the evaporator and down a drain hole in the trough ( this trough is behind the evaporator cover ) Removing the melted frost from the freezer. If that drain is clogged, the water cannot leave the freezer. Then when the fridge starts back up ,it will freez the water that was not drained. After repeated defrosting the water will fill this trough and run off into the bottom of the freezer to be frozzen when the fridge starts to cool again.

Nov 16, 2008 | Refrigerators

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