Dreaded F7 on GE built in.
Posted 16 May 2006 - 04:44 PM
My ovens will beep, display the delay start timer, and flash F7. I have turned off the breaker, unhooked the blue ribbon keypad cable. When I turned it back on, the only error I got, in about 5 minutes, was F0. This would make sense, as the keypad was unhooked.
So, since it beeps and acts odd on its own, sometimes becoming unresponsive requiring 'breaker' intervention, I'm thinking my problem is the keypad. I'll start there.
Wish I had bought that extended warrant..... :?
I'll let you know what happens.
Posted 26 May 2006 - 05:59 AM
I also noticed that on my old 'bad' keypad, it said Revision 0 on the back. On the new one, it says Revision 4.
Maybe GE has improved them. We can only wish.
Thanks to all for help/guidance.
Posted 14 June 2006 - 02:33 PM
About the recommeded test of pulling the cable, do you know if the F7 will show before the F0 if the ERC is really bad?
Posted 14 June 2006 - 03:12 PM
GeneNJ, It is another sad fact that some self cleaning ovens are constructed of materials that do not withstand the high temperatures needed for self cleaning. I have gone on countless calls where the customer says "it was working fine until we self cleaned it". If you are getting F7 with the keypad attached and no error with the keypad detached replace the keypad only.
Posted 14 June 2006 - 04:08 PM
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Posted 15 June 2006 - 04:18 PM
It's just that by answering these questions we are building a database of appliance knowledge that I would like to someday be able to carry with me on service calls. Bad data is worse than no data at all. That F0 = missing keypad might work on some other model although I've never seen it, but not on these JTP5600s. In the real world on the job, fixing the machines is easy. Removing wrong ideas from customers heads put there by the other "tech" is almost impossible because a good tech will not badmouth the previous tech.
Posted 15 June 2006 - 04:31 PM
Posted 16 June 2006 - 04:04 PM
I have a JT950B0A5BB that has been experiencing the very same problems stated by m98cox with a JTP56. It gets random beeps, goes in and out of various timer modes, then eventually receives an F7.
The Technical Data Sheet that accompanied my oven states that an F7 means "Shorted matrix or START key." For the corrective action it states "Determine if problem is with Key Panel or Control by disconnecting ribbon cable and power up control. If no F code problem is with key circuit."
I did the power-down, disconnect ribbon cable and power-up thing to find that it displayed F0 after 5 minutes. I concluded that the problem must be the Control, so I replaced it. When I found I still (and immediately) had the same problem and it failed the disconnect-ribbon-cable test again, I concluded that I must have received a bad part. (This seemed plausible since I have seen so many reports of these things failing.) Now, seeing a 2nd new part have the same problem, I'm beginning to think that the information on the Technical Data Sheet is inaccurate.
Based on some other responses, I bet the response I get will be "replace both." That might be the right answer if these parts were free, but I was hoping to get a little more guidance before surrendering my money. Is there any way to know conclusively that the problem is with one part, the other or both?
Also, did GE actually change the meaning of the F0 code for different models? Where can I find Technical Data Sheets so that I can check to see if a new version has been produced for my oven?
Posted 16 June 2006 - 04:55 PM
"It's been my experiance when you have an F7 with the keypad attached that changes to a F0 with the keypad detached you need both keypad and ERC. If you get a F0 with the keypad detached the ERC is bad <period>. I have replaced only the ERC in this situation more than once (trying to save my boss or the customer a few bucks) and have gotten callbacks. Changing only the keypad when you get a F0 with the keypad detached doesn't make any sense.
Can't find proof anywhere but, based on my experiance I think it is possible for a bad keypad to take out an ERC. "
diydad, It sounds to me like you are going through what I went through long time ago.
Posted 19 June 2006 - 05:17 PM
Posted 19 June 2006 - 05:51 PM
I have left keypads unplugged all day or over night on occasions to find intermittant problems. Most of the time the ovens clocks functioned and the oven did nothing because there was no keypad attached. My question is "where was the expected F0 no keypad"?
Now I have seen GE microwave ovens on two different chassis with the model JVM1631...
Posted 07 August 2006 - 09:33 AM
I reapplied power and promptly blew up the ERC. This is because the jack/plugs don't match-mate like they do in a computer. In fact J6 (going by memory here) has 1-3-5 pins and a Molex cable with only two wires. I did not realize I could install the plug onto the pins wrong but I did. After further review of the play, I was off one and pooched (flames & sparks, but I didn't swear)the ERC.
Bought a new ERC and spent three hours with the wiring diagram. The diagrams are horrific and outright wrong. The solid colors and strips are wrong. The pin numbers don't match the ERC. Only by logically studying the diagrams and tracing components was I able to deduce the correct connections. GE should be ashamed of their documentation.
The oven is alive but now has the F7 intermittently. Looks like I'm in for a new panel as well. Questions?
Posted 07 August 2006 - 03:37 PM
Posted 09 August 2006 - 03:15 PM
Posted 10 August 2006 - 02:06 AM
Posted 11 August 2006 - 03:59 AM
What are these things? And how much should they cost?
Posted 29 August 2006 - 03:12 PM
Two years later, this week, I have the F0 error. Power off/on, still F0 error. Pulled the ribbon cable off the keypad, power on, still F0 error. I again cleaned the ribbon cable contacts, reconnected, power on. No errors.
I may be the lucky one if I only have to clean that ribbon cable once every two years. I'll start using the lower oven more often to keep heat away from the electronics. I also have never used the self cleaning feature and always open the oven door after cooking to cool down the oven. I don't know if that helps delay the problem or not.
Posted 05 September 2006 - 03:13 PM
Now a double F0 error and wild display. My luck has run out.
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