Author Topic: GE REf  (Read 4132 times)

Offline niobrara

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GE REf
« on: September 26, 2009, 11:12:13 AM »
Where to start ,unit came from a customers home GE was out on it 2 times ,then along came me.Ref side cools great freezer side working fine for about one to two days then warms up.All thermistors check good and were replaced.Fans and heaters were also replaced.Working good.I replaced board this morning and started the beast back up.I have checked all the wiring on the unit back to the board,and it all checks good .Yea, I know I shotguned the board.This animal has me shaking my head .Any ideas or thoughts on what I could be missing . :-\

Model PSB42LSRBBV

Offline jumptrout51

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Re: GE REf
« Reply #1 on: September 26, 2009, 11:31:50 AM »
If the compressor is running while it is warming it could be a restriction in the refrigerant line.
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Offline niobrara

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Re: GE REf
« Reply #2 on: September 26, 2009, 12:08:13 PM »
No,I checked all lines and can flood both evaps.Unit has two evaps and both work fine thru the first couple of days after being powered off.Perfect cooling and freezing .Then the freezer starts to warm.But ref side works perfect??

Offline PARTech

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Re: GE REf
« Reply #3 on: September 26, 2009, 01:33:19 PM »
How about the 3 way valve that cycles between the 2 evaps?  Seems more likely that it would be a thermistor but you already checked...
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Offline niobrara

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Re: GE REf
« Reply #4 on: September 26, 2009, 07:00:59 PM »
After 8 hours of operation with new board display reads ref 38 really 48 freezer reads 40 and is 40 what am I missing here? :tickedoff:

Offline niobrara

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Re: GE REf
« Reply #5 on: September 27, 2009, 09:27:30 AM »
!2 hours later display for ref set at 38 , reads 38 real temp 44 freezer set at -6 reads 16 real temp 16. Wondering if the ref side could be causing my issue and why my display reading are not right on ref side. :-\

Offline Mr. Fix-It

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Re: GE REf
« Reply #6 on: September 27, 2009, 09:36:49 AM »
Sounds like the freezer thermistor is the problem. Did you try a new one?

Offline PARTech

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Re: GE REf
« Reply #7 on: September 27, 2009, 10:46:16 AM »
Thermister Values
Temperture Resistance
( F )      K Ohms
-40        88 k
-31        67.6 k
-22        52.4 k
-13        40.9k
- 4         32.2 k
5           25.6 k
14         20.4 k
23         16.4 k
32         13.2 k
41         10.8 k
50         8.9 k
59         7.3 k
68         6.1 k
77         5 k
86         4.2 k
95         3.5 k
104       3 k
113       2.5 k
122       2.2 k
131       1.9 k
140       1.6 k

Will that help?
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Offline niobrara

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Re: GE REf
« Reply #8 on: September 27, 2009, 10:56:59 AM »
Thermistors checking good .opened doors this morning to read real temps and now freezer temps are dropping.9 degrees now.Think I may have a harness issue?Why is the ref display off?

Offline PARTech

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Re: GE REf
« Reply #9 on: September 27, 2009, 11:01:35 AM »
Thermistors checking good .opened doors this morning to read real temps and now freezer temps are dropping.9 degrees now.Think I may have a harness issue?Why is the ref display off?

If the harness issue is between the thermister and the board or a communication between the board and display.....
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