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I have ice built-up at the connection between the capillary tube and evaporator coil. What will cause this problem?

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It is either your defrost thermostat which is the small button attached to your evaporator or your defrost heater is bad. Probably your defrost thermostat.

Posted on Aug 20, 2010

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Freezer is very cold fridge is 61 degrees


You could have a plugged drain tube under the evaporator coils(behind back freezer panel) which is causing the ice in the bottom of the freezer(when it defrosts). If it also is pluggged with ice to the air return from the refgigerator to the freezer side it will cause the problem you are having. Or you have two problems, plugged drain tube and evaporator fan not running or plugged drain tube and damper control iced up......
If you have a back-up unit, leave it unplugged for a day with the doors open to thaw out, may not help, good luck though, hope this helps

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1 Answer

WRS6R3EW8 Refrigerator and freezer not cooling. Evaporator coil 60 deg. only. Compressor, evaporator fan and condenser fan running. Some frost on the tubing coming from condenser at the evaporator. ...


Where is it frosting, condenser or evaporator? If you mean frosting on evaporator line to compressor, probably iced up evaporator. If you mean frosting after condenser by capillary, unit short of gas/ blocked.

Apr 27, 2012 | Refrigerators

1 Answer

Amana BR18V1S is running but fridge temperature is low (slightly cool) Checked everything, cleaned coils (very dirty) Freezer OK.


Check and see if the freezer coils are blocked with ice. If not you may have a refrigerant problem as you stated the coils were dirty. The new refrigerants when hot tend to clog the capillary tube which feeds the refrigerant to the evaporator (freezer coils)

Jun 06, 2011 | Amana Bottom Mount Refrigerator 22 cu ft -...

1 Answer

I have a true fridge mod number t55u-27-8 we keep salad in it and it keeps freezing all the salad please can you help ritchie


Hi, there are 3 likely things causing the problem.
Thermostat contacts faulty
Capillary tube(the thin tube connected to the thermostat) broken somewhere
Capillary tube not making good surface contact with the evaporator/cold plate.
A Leakey door seal is normally indicated by excessive frost buildup on the evaporator/cold plate over a short period.maybe the thermostat knob is slipping and not adjusting the temperature level of the thermostat...........

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2 Answers

I have had a repairman look at this refrigerator and he claims there is a slow leak. Can't a new freon line be installed?


Usually it takes too much labor to fix that line, Kitchenaid built in refrigerators have capillary tube which licks at the back by suction line tube. Refrigerator will need ti be moved out from cabinet in most cases. Tech would want to give You a warranty, so they usually would replace the whole sealed system for big money, but most likely it last 10-15 years. If They will fix one pipe, next year You might call him back, leak might be in different pipe, but it will be the same expensive (due to labor). Check my video out. A Year ago found leak at evaporator, explained to customer better to do the whole system, but he wanted only evaporator replaced since its so obvious. Now we will replace the whole system, Evap is ok, heater too, but now, capillary tube + suction line + drain pan heater loop(freon pipe). If You watch video thru till the end, you will see where heater on old evaporator touching evaporator coil in multiple bents.

Nov 06, 2010 | KitchenAid KSCS25FKSS Side by Side...

2 Answers

Kenmore AC, no cold air


If the evaporator tube is iced up entering the coil and cool to warm leaving the evaporator, that would indicate low on refrigerant or a restriction. If it is iced up entering and leaving the evaporator, then, it could be low on refrigerant,blower not running at proper speed, dirty evaporator coil or filter.
You need to check the suction and head pressure and temperature to determine problem for sure.

Jun 07, 2010 | LG LWHD1200FR Wall/Window Air Conditioner

1 Answer

Why suction line would ice back


Good day,
Unusual question.
Lots of reasons. You didn't say if it was cooling or cycling off and on.
1. Evaporator fan motor in freezer compartment not running. Doesn't allow the refrigerant to boil off and returns as a liquid.
2. Evaporator coil badly frosted allowing no air flow thru it. Same as #1
3. Runs constantly (days). no demand on system, and once again will not boil off before leaving evaporator.
4. Overcharged. Floods back excess charge.
5. Heat exchanger came apart. The capillary tube is soldered to the suction line to transfer heat from the cap tube to the suction line. Necessary on a refrigerator. Common problem.

Hope this helps
Thanks for using fixYa

Jan 21, 2010 | KitchenAid Superba Architect KSCS25INSS...

2 Answers

GE Eterna ESS25LGNA freezer side not working


Is the compressor motor running.If no check starter/overload relay.
Check to see if the condenser fan at the back underneath near the compressor is running. If no check fan.

Are the condenser coils near there warm or room temp. should be warm


How to check stuff>
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php


Is the evaporator fan in the freezer running. It blows cold air into the fridge side through a damper in the wall between the freezer and fridge. Make sure the damper is open.

Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).

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 timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control.

You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.


Your evaporator coils frost up in normal use and every eight hours or so the entire unit shuts down and the defrost heater comes on to melt the frost. This cycle last about 20 minutes. The melted frost drips into a drain pan and through a drain tube to the drain tray under the freezer/refrigerator where it's evaporated by the condenser fan.

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4 Answers

Ac capillary tubes


Sounds like you have a clogged cap tube. Yes they should both be sweating, I would expect your low side pressure to be lower though unless it is real hot in the camper. You can replace the tube but make sure what goes in is the same diameter and length because that is all engineered for proper metering into the evaporator.

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