Customer Support 7 days a week

Welcome Guest! You can not login or register.

Notification

Icon
Error

Options
Go to last post Go to first unread
Markian  
#1 Posted : Thursday, April 16, 2015 5:42:11 PM(UTC)
Markian

Rank: Member

Groups: Registered
Joined: 4/16/2015(UTC)
Posts: 2

Hello,
The compressor is running non stop freezing the Evan coils. After thawing the coils, the compressor seems to cycle normally for a few days, then the coils freeze again. Need to that every few weeks... Not sure if the problem is the defrost thermostat (it looks ok) the thermistor of the control board. Any help to diagnose would be appreciated.
Thank you,
mark.
Sponsor
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
denman  
#2 Posted : Friday, April 17, 2015 5:22:51 AM(UTC)
denman

Rank: Advanced Member

Groups: Senior Expert
Joined: 2/29/2008(UTC)
Posts: 19,638

Thanks: 1 times
Was thanked: 11 time(s) in 11 post(s)
Here are your parts
Parts for KitchenAid KBRS19KTWH2 Refrigerator - AppliancePartsPros.com

See the attachment for the tech sheet.

First remove the evaporator cover in the freezer so you can see the coils.
If they are heavily iced/frosted over then it is a defrost problem.
Do not let them de-ice.

If yes.
Manually force a defrost cycle, see the tech sheet. When the fans and compressor turn off you are in a defrost cyle..

Now check the defrost heater to see if it is on.
Be careful you do not want to burn your fingers.
If the heater is on then the control board needs replacing, re: it is never getting into a defrost cycle.

If not on.
Unplug the unit.
Remove the wire for one side of the heating element from the wiring and measure it for continuity, usually around 30 ohms or so.

If the heater is OK
Remove one wire to the defrost thermostat and measure it, should be 0 ohms when frozen. Note that it opens just above freezing so must be frozen to check it. Also inspect it, if it is bulged at all replace it even if it measures OK.
File Attachment(s):
KBRS19.pdf (390kb) downloaded 5 time(s).
THIS FORUM IS DEAD!!!!!!!
Markian  
#3 Posted : Monday, April 20, 2015 2:15:44 PM(UTC)
Markian

Rank: Member

Groups: Registered
Joined: 4/16/2015(UTC)
Posts: 2

Thanks for your help, looks like it is the board since the defrost element heated up nicely. Is this board located under the control panel in the refrigerator? Will the defrost cycle stop automatically?
Thanks again for your help.
denman  
#4 Posted : Tuesday, April 21, 2015 2:30:39 AM(UTC)
denman

Rank: Advanced Member

Groups: Senior Expert
Joined: 2/29/2008(UTC)
Posts: 19,638

Thanks: 1 times
Was thanked: 11 time(s) in 11 post(s)
[COLOR="Blue"]Is this board located under the control panel in the refrigerator?[/COLOR]
I am not sure what you mean. The board is in the control panel section (item 5 in section 02)

[COLOR="Blue"]Will the defrost cycle stop automatically?[/COLOR]
I am n ot sure. Moving on to the next test or resetting the unit should stop it.
THIS FORUM IS DEAD!!!!!!!
icuppu  
#5 Posted : Wednesday, September 13, 2017 12:42:46 AM(UTC)
icuppu

Rank: Member

Groups: Registered
Joined: 2/20/2010(UTC)
Posts: 1

A quick note: Anytime you change the water pump on your vehicle, you should change the thermostat too. As for your refrigerator, the defrost bi-metal thermo thermostat is a ON/OFF type switching device, it operates once every 8 hours or so, or approximately 3 times per day. It is usually rated for 10,000 lifetime cycles, so that equates to about 9 years and 1-1/2 months. If you don't enjoy taking the freezer food out and taking the racks and side hardware off to remove the back panel then change the bimetal thermal switch every 10 years, or have it fail on the 11th, 12th, or 13th year and lose out on spoiled food. A good back up switch that I use to piggy back as a troubleshooting tool is the OEM W10392132 that sells for $4.55, it has been replaced by a $40 one, but since I purchased 50 of the OEMs, that's what I've been using for years and I have yet to have one fail. Though this may not be your problem now, it will be in the future, but from your description, it certainly sounds that way, and even if it isn't, change it as you would a thermostat when you change your water pump. Call it preventative maintenance. As you state that your compressor is always running that means that your defrost heater is never running. What controls the switching is your first hint then work back and outwards from there. Do processes of elimination. Start with the forced defrost. Do what is easiest and where you will get the fastest reward. Without extended tools and wiring diagram analysis, you will take a bit longer to come to a solution, but beware and don't start guessing and replacing because that can be expensive and annoying. First do your diagnosis then confirm the diagnosis then confirm that the part is bad with proper testing then do the repair then confirm the repair.
Users browsing this topic
Guest (3)
Forum Jump  
You can post new topics in this forum.
You can reply to topics in this forum.
You can delete your posts in this forum.
You can edit your posts in this forum.
You cannot create polls in this forum.
You can vote in polls in this forum.