Need appliance parts? Call 877-803-7957 now or use the parts search box:

Parts Search

Learn appliance repair at online the Master Samurai Tech Academy.  Learn more.  Earn more.

FAQs | Repair Videos | Academy | Newsletter | Podcast | Contact

bimbbobway

GE fridge random temp swings PFS22SBSBSS

8 posts in this topic

Mod PFS22SBSBSS Ser HL044765

This refrigerator randomly displays an usual temperatures. When we first went out on the job it was getting 24 below in the freezer and sometimes freezing in the fresh food.The customer says the temperatures will go erratic for a few hours. Then they seem to go back to normal sustainable for days . We tested the thermistors they were in normal range. We replace the mainboard. It work for a few weeks then it started doing it again. We went back out and checked everything again. We decided to replace all the thermistors. It worked for a month then it started doing it again.Has anyone ever seen this problem before?

Share this post


Link to post
Share on other sites

Need appliance parts? Call 877-803-7957 now!

looks like the MotherBoard senses the Thermistors and controls the Compressor and Damper Doors

Does it already have the newer style M/B ?

http://url=http://www.repairclinic.com/referral.asp?R=154&N=1531075

 

Main-Control-Board-WR55X10942-01091474.j

 

if so, was the following performed ?

GE Fridge Mother Board installation info
WR55X10552

http://appliantology.org/files/file/630-ge-refrigerator-mother-board-recall-installation-info/

 

All BOTTOM FREEZER models:

STEP 2– ELIMINATE THERMISTOR WIRE IN PIN 2 OF J1 CONNECTOR
IF NO WIRE IN PIN 2, PROCEED TO STEP 3

 

STEP 3–INSTALL NEW MAIN BOARD
• When replacing back panel, make certain to capture eyelet of ground wire with back panel screw.

 

STEP 4– CUT GREEN WIRE IN CAPACITOR BOARD
Note: Only applicable for BOTTOM FREEZER models

• If the capacitor is not present, skip to Step 5

Share this post


Link to post
Share on other sites

If thermistors, mainboard and damper check out you may have a problem with the temp control board or communication between it and mainboard http://www.repairclinic.com/PartDetail/Temperature-Control-Board/WR55X10522/1170076

You can check communications between the temp controller and mainboard by entering 0--2 in diagnostic mode.

Share this post


Link to post
Share on other sites

Yes it has the new style mainboard on it. I think I will replace the temperature control board. But I still feel like I'm taking a shot in the dark. Thanks for the advice

Share this post


Link to post
Share on other sites

think I will replace the temperature control board. But I still feel like I'm taking a shot in the dark. Thanks for the advice

Use the diagnostics, it may shed some light

Share this post


Link to post
Share on other sites

I think the Display Board is only for the display....

I may be wrong.

Share this post


Link to post
Share on other sites

I think the Display Board is only for the display....

I may be wrong.

It's actually a display, and temp controller. It is just like the diagnostic aid. If it goes haywire, it can do things akin to an encoder model controller knobs being turned up and down randomly. Although it does not regulate temps, it is the user interface to the board.

I have rarely seen them go bad, but if everything else checks out okay (I still would revisit thermistors) and the symptoms are the same after everything else has been changed, then testing/changing the interface would be the logical next step. Buy it from repair clinic and return it if problem continues.

Share this post


Link to post
Share on other sites

Yes it has the new style mainboard on it. I think I will replace the temperature control board. But I still feel like I'm taking a shot in the dark. Thanks for the advice

I did not see a response to sensei Reg's question regarding proper board installation

Share this post


Link to post
Share on other sites