Whirlpool WRT519SZDW fridge too cold

[Jdt141]

Hi all,

I have a Whirlpool WRT519SZDW02 Top freezer refrigerator that started freezing gallons of milk on the bottom shelf. The unit will not stop running. 

I have manually inspected the seal, that looks good. 

i then put the system into self test mode, and it passed all the tests.

i have replaced the refrigerator thermistor, and the unit continued to run for several days. 

i have inspected and tested the damper (a manual mechanism) and that looks good. 

I have ran the unit for 4-6 hours on different temperature settings, but it continues to run. 

i have checked the resistance of both the fridge and freezer thermistors. The freezer thermistor is coming in at 3170 ohms at room temp. The new fridge thermistor is coming in at 3080 ohms. The old one is reading 3100 ohms, all at room temp. when dunking the sensors in ice water, the ohms rise. 

I pulled and put back the feeezer thermistor and ran the self test again, and it still passed the self test. 

Tonight when I pulled the back panel off from the interior freezer to inspect the freezer thermistor, it was covered in ice. Everything else had no frost on it.

any thoughts on what this could be? I’m guessing at this point the main board is bad in some way, but I can think of no way to know for sure.

thanks for the help in advance!

 

[Budget Appliance Repair]

Sounds like another one of these that is having a sealed system problem , (Low on Freon/R134a).

When you pulled the back freezer/evaporator panel off and you say the thermistor is covered in ice - I've seen this before on two of these that where only about 2 years old and another that was only about 3 years old with no frost even on the first few inches of the evaporator coil - completely out of Freon.

The complete evaporator should have an nice white coating of frost over every coil - when only the first pass of the evaporator or just the first few inches where the tiny capillary tube enters the evaporator then that is a sure sign of a sealed system problem.

It's out of warranty after the first year but I would advise you to complain to Whirlpool and see if they might do something for you.   You should get a lot longer then two years out of a refrigerator!!!!!

[Jdt141]

Ugh. i bought this Whirlpool fridge reluctantly because the LAST one I bought had a sealed system failure at 3y/o. 
 

never. Again.  Thanks for the tip.