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- > Do-It-Yourself Appliance Repair Help > The Kitchen Appliance Repair Forum > Maytag Oven CWG4100AAB throwing F3 code

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Maytag Oven CWG4100AAB throwing F3 code  Rating:  Rating
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 Posted: Sat Jun 14th, 2008 11:43 pm
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ttee8190
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Hi, My Maytag gas oven model CWG4100AAB started throwing F3 error code in the last couple of days.  It has happened twice in the last 3-4 days.  The oven seem to run 'most of the time', however, when it stumbles on the fatal F3 the thing comes to a dead-stop.  It does seems to fire-back-up once it has cooled down -- needless to say, dinner has been served through the drive-in window lately.  I found samurai’s ‘Appliance Tip of the Day: Oven Temperature Sensors Demystified’ which lead me to suspect that I might need to replace the ERC for this oven.  Please help confirm if the ERC is indeed the problem for this make/model error code.  If so, I would appreciate the part number if available. Thanks in advance.

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 Posted: Sat Jun 14th, 2008 11:58 pm
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F3 is a failure in the oven sensor circuit.  That circuit being from the ERC outlet pin to the harness, to the sensor and back to the ERC return pin.  Could be a bad sensor that is failing under heat conditions, or possibly a connection that is failing as the unit heats and it expands.  The temp of the sensor at room temp is 1050-1100 0hms and goes up 100 ohms for every 50 degrees from there.  If you can get it to fail, and ohm it out, you will know for sure.  I will tell you a sensor is a heck of a lot cheaper then an ERC and is more likely the culprit.  Always suspect the input rather then the ERC in intermittent situations.  

Sensor if needed.

http://www.repairclinic.com/referral.asp?R=154&N=1365



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 Posted: Sun Jun 15th, 2008 12:18 am
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RegUS_PatOff
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may be similar:

Whirlpool Wall Oven, Gas, 24", Technical Information



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 Posted: Sun Jun 15th, 2008 02:39 pm
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ttee8190
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thank you for the quick reply.  i ran into a bit of a problem disconnecting the sensor  from the oven in order to run the sensor resistance test.  i unscrewed the two philips screws inside the oven cavity holding the sensor thinking it will allow sufficient access to the connection join.  there appears to be no wire slack whatsoever on the sensor cable.  does this mean i need pull the oven off the wall to disconnect the sensor? any help/advice uninstalling the sensor is much appreciated. thank you in advance.

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 Posted: Sun Jun 15th, 2008 02:54 pm
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RegUS_PatOff
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or at pins 1 & 4 of the 5-pin cable (unplugged) on the back of the Oven Controller


Last edited on Sun Jun 15th, 2008 02:56 pm by RegUS_PatOff



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 Posted: Sun Jun 15th, 2008 03:09 pm
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Sometimes,  the white terminal block/connector gets caught/ hungup in the holes thru,     (oven cavity to the rear of the oven)....... You have to play around with it a little to get the connector thru. I use a long thin screwdriver to help align the connector to pass thru the holes.....turn power off...hold sensor with one hand...push screwdriver along parallel to wire....you can feel the screwdriver touch the connector........pull the sensor and use screwdriver to square/align  connector to hole to remove...  Back-up tool,  a chop stick....

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 Posted: Sun Jun 15th, 2008 03:41 pm
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ttee8190
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the sensor read about right resistance at room temp (1.075Kohm).  however, i am unable to continue the test as it would mean reconnecting power back in order take reading in successive 50 degrees increment.  this might help explain why the oven continue to power on when cooled after it hits the F3 error but sensor fails at a higher temperature.  at this point, it might be wise to replace the sensor – do you agree? last question … is there an easy way to replace the sensor apart from pulling it out of the wall?  accessing the control panel still does not permit replacing the sensor.  appreciate any advice/help if there is a technician ‘hidden quick access’ procedure here. thank you in advance.

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 Posted: Sun Jun 15th, 2008 03:47 pm
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If you can not get it to fail for you to test then the sensor would be your first component to change.  As CTG51 stated, there is a quick disconnect on the sensor harness that can get hung up behind the cavity.  Pushing a screwdriver in there to free it is the best way I know to do it.  Sometimes you pull the unit out because you can not access it this way and find it wrapped around something from the factory.  Made on a Friday at 4:55 scenario.  Below is the sensor link and you can see the plastic molex we believe is hung up.

 http://www.repairclinic.com/referral.asp?R=154&N=1365



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 Posted: Sun Jun 15th, 2008 03:50 pm
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you could plug the sensor back in (but not completely assembled), run the Oven till it gets the F3 error, disconnect the sensor and take a reading compared to a thermometer in the Oven.

When normal baking, does the Display Temperature read the same as a thermometer in the Oven ?


note: It's not a good idead to use Self-Clean in any Oven.
The nearly 1000°F for 3+ hours can wreak havoc on connections and controllers :burning:

Last edited on Sun Jun 15th, 2008 03:53 pm by RegUS_PatOff



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 Posted: Sun Jun 15th, 2008 04:08 pm
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ttee8190
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RegUS_PatOff, the temperature reading is about 3 degrees higher than what the oven displays.  the suspicion is the “50 cents resistor” (guessing) in the sensor has out-lived it’s life expectancy and replacing it on a 8 year old oven might be the prudent next step.  do you agree?

 

i didn’t see your posting CTG51 before replying to the thread. thank you for the information. i will give it a try – once new part arrives -- as it sure beats heaving the 150+ lbs box to replace sensor.

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 Posted: Sun Jun 15th, 2008 04:50 pm
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or may be intermittent at a certain temperature...

you can try it... or order both ...

Any part ordered from RepairClinic can be returned within 30 days for a refund (less shipping)

Last edited on Sun Jun 15th, 2008 04:51 pm by RegUS_PatOff



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 Posted: Thu Oct 2nd, 2008 09:36 pm
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ttee8190
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an update ... i replaced the sensor back in 6/08 from the advice received here.  everything was working fine until about 2 weeks ago, the oven begin throwing the same F3 error.  here is the funny thing ... it seems the oven throws F3 when the temp is set above 375. 

decided to go ahead and replace it yet again thinking i might have bought a less than stellar probe.  bottom line, i am getting the same F3 error (when set 400 or higher) regardless of whether i use the new or old probe.  suggestions on how to proceed is much appreciated. thanks in advance.

Last edited on Thu Oct 2nd, 2008 11:09 pm by ttee8190

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 Posted: Fri Oct 3rd, 2008 01:25 am
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MrFixit246
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I have seen on this oven, the sensor plastic connector starts to melt or crack, I then just hard wire the sensor, but, you need access to the back to do this. If that doesn't work I have also had to replace the ERC(clock asssembly) to get it to work.

MrFixit

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