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Whirlpool Refrigerator GZ25FSRXYY7 - partial freezing in freezer - ice build up around fan.. is this normal build up?

CamaroMan

Premium Member
Joined
May 31, 2021
Messages
4
Location
Long Beach, CA
Model Number
GZ25FSRXYY7
Brand
Whirlpool
Age
6-10 years
Hi all - finally have a little time to address our freezer (whirlpool GZ25FSRXYY7) building up ice in the freezer section - We came back from a trip and found the fan making a noise.. looked inside freezer and it was freezing up in the freezer where the fan spins against the back- ice packs up around the fan and the metal coils.. the fan was clacking (hitting the ice), we defrosted it and it seemed ok for 4 months but slowly theres a little bit of ice building ice up again around the fan area so we opened it today (see pics) and defrosted it and dried it with a fan blower... Fridge works perfect and the freezer drawers are not freezing up - just around the fan/condenser bars against the back - what can we check?

Im wondering if someone left the freezer open by accident while we were away cos it was working perfectly before and seems better after our initial quick dry attempt -

The ice is slooowly growing more and more according to the wife but slower than when we came back - so at some pt i guess the fan will start making a noise again maybe -
Already ordered the updated drain tube although not sure thats the issue - not a fridge expert but handy and can operate a multimeter no prob-

Thanks!

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rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
44,188
Location
Murray, Utah 84107, United States
That's a partial frost pattern on the evaporator which indicates a sealed system problem. The evaporator is starving for refrigerant. This can be caused by a refrigerant leak, a partial system restriction or even an inefficient compressor. Sealed system repairs are expensive and will often exceed the machines value. You can double check it's a sealed system problem by completely defrosting all the ice and snow from the evaporator using a hair dryer. Install the cover over the evaporator (important). After 24 hours with few door openings, leave the machine plugged in and running and remove the cover. You want to see a very light coat of white frost on all the coils top to bottom, no snow or ice. If some of the coils don't have any frost on them the sealed system is the problem.
 

CamaroMan

Premium Member
Joined
May 31, 2021
Messages
4
Location
Long Beach, CA
awesome thanks! we proceeded to let it dry and plugged it back in - ill pop the cover off tomorrow afternoon and take a pic and post it -

fwiw my wife did remove a whole long clump of our one cats hair blocking the front vent on the floor - he sheds like crazy and we are constantly fighting for a clean place - we somehow didnt realize so much would collect under the fridge till we pulled out today - could that add to the problem?
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
44,188
Location
Murray, Utah 84107, United States
The compressor pulls the R134a gas from the evaporator, compresses it, then pumps it into the condensor coils. Compressing any gas increases its temperature. So at this point you have a hot saturated gas entering the condensor. The condensor and fan is designed to cool the gas where it condenses back to a liquid. The liquid refrigerant flows through the cap tube where it enters the evaporator. When it enters the evaporator it boils (expands). When it does, it gets cold. This process continues as long as the compressor is running.

Dust and pet hair can block the airflow across the condensor. This will keep the refrigerant from condensing to a liquid before it enters the evaporator and you get poor cooling. This might cause the same symptoms as a sealed system problem. The evaporator is starving because it's getting some liquid and some gas and gas can't boil. I tell my customers to clean the condensor coils once a year or twice a year if they have pets. You may have fixed the problem by cleaning the condensor coils. The frost pattern after 24 hours will tell the story.
 

CamaroMan

Premium Member
Joined
May 31, 2021
Messages
4
Location
Long Beach, CA
wife packed the freezer while I was at work - ill have to peek thru the vents, but a quick glance showed an even thin white layer of frost - no bare spots but ill have to really get my head in there past all the goodies to be sure-
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
44,188
Location
Murray, Utah 84107, United States
You can not tell for sure without removing the cover. Take a pic and post it here.
 
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