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Author Topic: Force DEFROST ON G.E BOARD WR55x10942  (Read 223 times)

Offline dab147315

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Force DEFROST ON G.E BOARD WR55x10942
« on: January 13, 2013, 10:56:32 AM »
Has anyone use this method.

Online Bailey

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #1 on: January 13, 2013, 11:09:30 AM »
I do that any time I get one thats not defrosting. It tells me that the heater and thermostat are good, plus it helps remove the frost.

Offline jumptrout51

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #2 on: January 13, 2013, 02:06:50 PM »
The fastest way to confirm the problem.
Be prepared for a little spark.
Place your clamp on amp meter around your jumper wire to confirm heater amps.
 No amps, bad thermostat or bad heater.
On a GE,usually both.
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Offline jumptrout51

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #3 on: January 13, 2013, 02:08:26 PM »
You can also use the Line to Comp jumper to confirm a bad board.
If the compressor is good,it will come on.
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Offline Wedgeman55

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #4 on: January 13, 2013, 06:29:20 PM »
I use both methods - for compressor and for heater.   I have been to at least 8 GE classes on this,  and the trainer showed us how to do this.    If you have a meter where it reads amperage through leads,   you can use the two test leads as the jumper (one to line,  one to compressor) and if heater is good,   you will read amperage reading.   If nothing,  then bad heater for sure.   If you jump compressor and it works,   bad board.   
Commercial Laundry repair Tech and Installer  1973 to 1980
Service Manager / Technician Commercial Laundry repair company 1980 to 2002
Refrigeration - HVAC - Boiler School 1974-1976
Electronic School 1978-1979
Self Employed Appliance Repair Company 2002 to present

Offline ryan111

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #5 on: January 13, 2013, 07:54:55 PM »
I have done it a dozen times or so but most of the time I find it unnecessary (or I am just too lazy to pull the refrigerator out).

As much as the heaters go out you could almost just change the heater without testing and you would be right most of the time but I usually just do a ohm test on the heater and if it isn’t bad (it is most of the time especially on the 22 cubic models) I regroup and go from there.

At a GE service school the instructor fussed about techs doing this saying we shouldn’t do it at all. However, then he when on to say if you insist on jumping the defrost-heater unplug the refrigerator and the plug (that connects the defrost) then make the jumper on just the plug itself (without it being connected to the board). Then, plug the refrigerator back in. 

He was 100% against jumping the defrost heater with the plug still connected to the board saying that you run the risk of damaging the board. I learned that day that a lot of guys were jumping it with the plug connected and apparently not having any problems but since he was so adamant about it I do it the way he suggested.
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Offline dab147315

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #6 on: January 14, 2013, 09:08:48 AM »
I am with you ryan on your last statement about unplugging the refrigerator and doing it like you say.

Offline dab147315

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #7 on: January 14, 2013, 09:17:24 AM »
Also ohm meter maybe faster.

Offline Wedgeman55

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #8 on: January 15, 2013, 02:16:47 AM »
Here is what I do - I had one today.    My meter reads amps through meter.    I leave the box plugged in,   remove the board cover.    I touch one meter lead to line,    then the other meter lead to the defrost on the power input plug.   If I read amperage through the meter,   then the heater is good,   the defrost thermo is good,  and I am looking at either a bad board or a bad thermistor.     Don't forget,  if that thermistor (the one on the evaporator coil) is bad,   unit will not defrost.      I have never had any board short outs or anything.      Good reason to do it this way - if unit is frozen,   then it is difficult to pull front panel,  you have to thaw first.     If I find heater is bad (which it usually is),  then I give customer a choice.    They can have me thaw it out and pay me for my time,  or Let it thaw out and I can come back.   Either way,   I win.   If I steam out unit,   I charge them for it.      If they want to do it themselves,   It saves me time that I can do another call or two with.     If it is a far call (distance wise),  then I don't give them a choice,  I thaw it out.   

Thats funny ,  Ryan.   The GE Service school I went to,  the trainer showed us how to do this.    He was a former field tech,   and he said this was the best way to check.    I have been doing this for years.   I guess every trainer for GE has his own opinions.     But,  seriously,   I haven't had a problem doing it this way and it does give you a fast answer.      Only time I don't pull the box is if the floor is soft linolium or it is too tight in wall space.  Then,  I will take the panel off and check the heater from there.   
Commercial Laundry repair Tech and Installer  1973 to 1980
Service Manager / Technician Commercial Laundry repair company 1980 to 2002
Refrigeration - HVAC - Boiler School 1974-1976
Electronic School 1978-1979
Self Employed Appliance Repair Company 2002 to present

Offline Wedgeman55

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Re: Force DEFROST ON G.E BOARD WR55x10942
« Reply #9 on: January 15, 2013, 02:20:25 AM »
One important note I forgot to say - i turn off unit at the controls.    I don't do this with compressor running (although you probably could) - 
I shut off,  then I check the defrost from the board.   
Commercial Laundry repair Tech and Installer  1973 to 1980
Service Manager / Technician Commercial Laundry repair company 1980 to 2002
Refrigeration - HVAC - Boiler School 1974-1976
Electronic School 1978-1979
Self Employed Appliance Repair Company 2002 to present

 

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