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FIXED KitchenAid KRFC704FSS00 Refrigerator warm, freezer almost cold enough

blakeblackshear

Premium Member
Joined
Jun 7, 2022
Messages
11
Location
Franklin, TN
Model Number
KRFC704FSS00
Brand
KitchenAid
Age
1-5 years
Appliance repair company says its a freon leak. Fridge reading 60 and freezer reading ~10 with a separate temperature gauge. Here are the readings during diagnostic tests.

Service Test - 01 RC Thermistor53
Service Test - 02 FC Thermistor22
Service Test - 03 RC Evaporator Thermistor32
Service Test - 04 First FC Evaporator Thermistor32
Service Test - 05 Pantry Thermistor53
Service Test - 14 Door Ice Box Thermistor31
Service Test - 16 Door Ice Maker Tray ThermistorOP

I can hear the fan when running FC Fan Test (56) and RC Fan Test (57) and I can feel air moving in the RC.

Running 128, I get a version number of 4.0.0.

I appreciate any advice.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,162
Location
Redmond, Oregon
Ok, you'll need to check the frost pattern on the evaporator coil.

Rick details it here with photos:

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,162
Location
Redmond, Oregon
FC(freezer compartment) evaporator coil.

Jake
 

blakeblackshear

Premium Member
Joined
Jun 7, 2022
Messages
11
Location
Franklin, TN
I left the door closed for 24 hours and the temp actually dropped down to near 0. Then I removed the door, drawer, brackets, and cover so I could see the coils. The FC coils didn't have much if any frost on them.

The post you linked said to look at the RC coils, should I see what those look like?
 

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Jake

Appliance Tech - Admin
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Joined
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Messages
134,162
Location
Redmond, Oregon
Yes, then check the RC(Refrigerator Compartment) evaporator coil.

Here's the RC evaporator cover, which includes the RC fan motor for your model: Refrigerator Evaporator Cover W11167902

I located a service bulletin for this model for certain serial numbers--->Serial Numbers: K600*- K740*

What is the serial number of your refrigerator?

Here's that service bulletin: It's very extensive, you will need to take some time to go through everything it says to check for.

Look on page 6 of that service bulletin--->Check the Refrigerator section evaporator thermistor for proper contact with the tubing.

This video gives you the general idea of how to get access to the RC(refrigerator compartment) evaporator coil.


Jake
 

blakeblackshear

Premium Member
Joined
Jun 7, 2022
Messages
11
Location
Franklin, TN
There is so much ice on the RC evaporator that I can't even get the styrofoam off without letting it defrost for a while. I already broke the existing styrofoam.
 

blakeblackshear

Premium Member
Joined
Jun 7, 2022
Messages
11
Location
Franklin, TN
I glued the old styrofoam back together so I could re-install the evap-cover. The gasket was in fairly good condition. It has been running overnight and the temperatures have returned to normal. Going to wait a full 24 hours and see what the frost pattern looks like. Also, when I defrosted the coils, I noticed a perfectly sized ball of what looks like spray insulation in the drain pan hole.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,162
Location
Redmond, Oregon
Look on page 6 of that service bulletin--->Check the Refrigerator section evaporator thermistor for proper contact with the tubing.
Ok, per your serial number your model is included in that service bulletin I posted above in post #6.

Look on page 6 of that service bulletin--->Did you check the Refrigerator section evaporator thermistor for proper contact with the tubing?

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
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Messages
134,162
Location
Redmond, Oregon
Good, then that should fix it hopefully, fingers crossed. 🤞

Jake
 

blakeblackshear

Premium Member
Joined
Jun 7, 2022
Messages
11
Location
Franklin, TN
It's been 36 hours and everything is holding normal temperatures. No ice on the RC evaporator. Blows my mind that it worked fine for 5 years that way. 🤔
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
134,162
Location
Redmond, Oregon
It's been 36 hours and everything is holding normal temperatures. No ice on the RC evaporator.

Excellent, I'm certainly glad to hear that.(y)

Thanks for the update!

Jake
 

silvermullet

Premium Member
Joined
May 14, 2022
Messages
6
Location
Seattle
Hey Jake,

I have a similar problem that we've been trying to hunt down and i told my service tech about the evap cover... he ordered it and even came to my house with it but the whirlpool tech on the phone told him to run some test to check the 3 way valve so then they concluded it was the 3 way valve. this was in early June. fast forward to last week when a different service tech came out bc the one who was coming retired and said the 3 way valves very rarely go bad and re-ordered the evap cover. so that is where we are right now. i will update you when that gets changed next monday.

in the meanwhile, he set something to make the fridge go into defrost cycle more often. now the control panel reads 'extend-freeze' where as before it showed 'energy saver' the manual says press the energy saver button for 3 secs but that doesnt seem to work. is there a way to reset all the settings to factory? my model is KRFC704FSS04. thanks!
 

silvermullet

Premium Member
Joined
May 14, 2022
Messages
6
Location
Seattle
glad to hear things are fixed for you. thanks for the manual. yea.. looked there and it says to move the temp from the lowest set point to get it out of extend-freeze but that doesnt seem to work as the freezer is set at 0F.
 
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