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Error code f3 on kenmore 790 - Kenmore 91112 / 91114 / 91117 Electric Kitchen Range

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: Error code F3 on Kenmore 911.4658815 electric range

INGLIS Royal 100 STOVE F1 F2 F3 ERRORS
Mode lUP 48500 ( thats eye you, not ONE U )

I got the dreaded F3 error on the Display Panel,
every time I pressed BAKE or BROIL, BUT, I could
hear the three relays click in, and then kick out in
sequence, just before the F3 appeared.

I called Westinghouse ( that services INGLIS ) and
was told that F3 " means unpug for 1/2 hour and then
press CLEAR 5 Seconds to reset ". Which is nonsense.

All functions on the clock and timer work fine, and the
three relays were working, so its not a computer problem.
I called service REPAIR companies who said it was the
THERMOSTAT, and replace it - $147.99 ... The Glass tube
of the display is $200 with no circuit board, the relay board
is $300 and the computer/display is $400.

I did tests on the thermostat, first heating it with a propane
lighter, and it raised from 475 Ohms at room temperature,
to 600 ohms, so I knew it was functioning.

Then, I plugged in a variable resistor where the thermostat
plugs in. I went from Zero Ohms resistance to 5000 Ohms in
200 Ohms steps.

Zero Ohms ( equal to burnt out or unplugged) gives you
an immediate F1, which you cannot clear.
From 100 Ohms to 400 Ohms, you get Error F2, which
means thermostat too low.
From 400 Ohms to 665 Ohms there is no error.
At 665 Ohms, the BAKE will beep twice, stating that you
are setting the temperature at or lower than the actual temperature
of the oven ( you cant set the oven at 200, for example, if it is
already at 450 Degrees )
Using this 2 Beep code, I raised and lowered the resistance
and made a graph of the reading on the display versus the
OHMS that the thermostat would send to the controller:
665 Ohms = 170 Degrees Farenheit, which is the
lowest reading in the BAKE MODE.
800 Ohms = 240 Degrees
1100 Ohms = 380 Degrees
1400 Ohms = 500 Degrees, which iis the maximum that
the unit showed in the BAKE MODE.
1430 Ohms to 2750 Ohms, there was no reading, an NO ERRORS.
ABOVE 2750 OHMS, the F1 ERROR appeared again, meaning
thermostat out of range.

Note that the computer module supplies 5 volts DC to the thermostat,
to see the changes in current with changing resistance.
You can easily check the thermostat to see if it is OK, with an
Ohmeter across the thermostat, which should read about 475 Ohms
at room temperature. If it reads Zero, it is burnt out. If it reads
over 2750, it is defective. Check to see if the thermistor in the
tube is SHORTED to the steel outter case as well, as this should be
infinite ohms ( no contact )- if it reads ZERO it is shorted to case.

I found that on the Internet, there are hundreds of people looking for
the F3 code for the ROYAL 100 ( model number IUP 48500 )
and a general search shows that for 400 " other" models of all kinds,
F3 = REPLACE THERMOSTAT ! Not on this model, and all typical searches
for technical support or diagrams or troubleshooting did not even list
the Royal 100 AT ALL, as if it never existed.

I then did tests on the relay board, and replaced the capacitors, a few diodes,
some resistors that were a bit out of value, and two transistors that were
a bit out of value. There was no change in F3.

I cleaned the contacts on the three relays using a typical board fingernail
file that ladies use for their finger nails ( I keep a supply for cleaning
relay contacts, since there is sandpaper on both sides, and they are
tiny enough to fit between most contacts ). THEN, I realized that the BROIL
contacts were bouncing apart - they were too far apart, and not closing
properly, so I bent the stationary contact a bit closer, and plugged in the
stove = NO ERRORS..

I analysed the circuit, and after turning on the 3 relays ( NOTE, when you
turn on BAKE, as in a regular oven, THE BROIL ELEMENT goes on at first
to quickly help the BAKE element get the oven up to temperature )
there is a feedback circuit that feeds 250 Volts back into the 5 Volt computer
chip ( ! ! ! ) It uses two 22 Meg Ohm resistors in series for a total of 44 Million
Ohms, which shows about 46 volts accross the resistors. Since the gas
tube display uses 30 volts to light up, the 46 volts is within the computer
board's ability to lower it enough to feed into the computer. There are transisors
on the back of the control board and Zener diodes etc. to " compare " the
voltage, where 46 volts in = 250, and Zero volts, means that the element
is burnt out, the element fuse in the fuse panel is burnt out, or, the relay
contacts are dirty. The relays are absolutely standard 24 volt relays,
with a plasic cover that snaps off if you pull and wiggle it. You will see
the round silver contact pads are blackened and probaly pitted.
Sand these flat until silver/brass shiny, and test to make certain that
when you press the metal lever that the magnetic coil pulls DOWN,
that the contacts touch! If they do not touch tight, bend the
stationary contact in a tiny bit and test again.

You can first check the fuses - there are two 120 volt fuses in the
fuse panel that give you 250. Then, you can unplug the stove,
and use an OHM meter to see if the element is burnt. The two types
of elements I checked were 3000 Watt at 18.7 Ohms, and 2500 Watt,
at 48 Ohms. If the elements are burnt out, you will get ZERO ohms.
If the element is burnt internally through the insulation in the tube,
and shorting to ground, between the ends and the steel back of the
stove ( ground) you will get a reading of X amount of ohms ( which
normally should be ZERO ) If the element is burnt or shorted to
ground, replace.

The F3 error is a really dumb mechanical errror of whether the 250 volts
is on the elements. It does not involve the computer or the thermostat,
or the relay " electronics" at all - it is just simply 3 contacts that supply
250 Volts, and whether or not the contacts work, the elements work,
or the fuses work. This the same 250 Volts that is on an ordinary
dial stove, and the dumbest part of the whole unit.

When I called service, they said they would order the $147.95 temperature
thermostat, and " see if this fixes the problem", if not they would start
replacing the modules - $300 and $400, plus labour, plus tax etc., and
since the problem was on the module, this would cost $147.95 + $300,
plus $75.00 for the first 15 minutes, and $15 for each additional 15 minutes,
for a total of about $466 dollars ( CDN ) which is about $460 dollars US.

A package of 25 fingernail files is $1.00 at the dollar store. That is all that
it cost to fix the problem. You need a square ( Robertson ) head screwdriver
to remove the 7 screws on the back panel, and then you wiggle the
covers off the relays, and clean them. It takes 10 minutes.

good luck ! Damned the manufacturers for not putting this information
in the user manual.

Robin Graves, January 2008, kidbots.com

Posted on Feb 01, 2008

reg501
  • 413 Answers

SOURCE: I have a kenmore elite

The range has entered sabbath mode. Refer to owners on procedure for turning sabbath mode off. Also try to hold down "timer off" button for 10 seconds.

Posted on Jun 09, 2008

57 varieties
  • 1653 Answers

SOURCE: I have kenmore elite gas range 790 series getting

The F93 shows that the Maximum oven door lock time has been exceeded.
Turn off the range and turn off the AC power and wait for up to 10 mins. The door should reopen. Turn on the AC power ans see if the error persists. If it does then check the following.

1. Check the wiring between EOC & Lock Motor Micro Switch.
2. Replace the Motor Door Latch assembly if necessary.
3. Check for binding of the Latch Cam, Lock Motor Rod & Lock Motor Cam.
4. Check to see if Lock Motor Coil is open. If open, replace Lock Motor Assembly.
5. Lock Motor continuosly runs - if Micro Switch is open, replace Lock Motor Assembly.
6. Check oven door Light Switch - if open, replace Switch.
7. If all situations above do not solve problem, replace EOC.

Posted on Nov 12, 2009

blueextc3221
  • 15935 Answers

SOURCE: Kenmore oven with an error code F3

The F3 E2 error code indicates that the electronic oven control board in the range senses an over-temperature condition in the oven.

This can be caused by a failed temperature sensor probe, a wiring problem between the sensor and the control board, or a failed electronic oven control board.
If the oven is apparently not overheating when this error code appears, then your likely failure is the temperature sensor probe.
If the oven is overheating, then you likely have a failed electronic oven control board due to a stuck relay not cycling the oven heating element off properly.


For replacement parts - head on over to PartSelect.com or RepairClinic.com and enter in your full model number for a full parts listing.
I recommend both sites because ...


FixYa has no affiliation with either site - I have been using and recommending them for years - trouble free.

PartSelect has a great schematic database for locating the part on your unit and great "testimonials" for each part that often times includes HOW-TO information.
RepairClinic has pictures of each part they sell and also a great how-to and troubleshooting for basic repairs.


If your unit has never been serviced - there should still be an original service manual enclosed in plastic taped to the inside of the shell.
In the service manual are Error codes, maintenance procedures, and troubleshooting steps you can follow.


Anything too complicated or beyond your scope should be handled by a professional.

If you think you want to tackle the repair - and have gotten stuck on a step - reply to your question and I will be glad to help you out.




Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question

Posted on Sep 25, 2010

blueextc3221
  • 15935 Answers

SOURCE: Kenmore Elite error code F3

The F3 E2 error code indicates that the electronic oven control board in the range senses an over-temperature condition in the oven.

This can be caused by a failed temperature sensor probe, a wiring problem between the sensor and the control board, or a failed electronic oven control board.
If the oven is apparently not overheating when this error code appears, then your likely failure is the temperature sensor probe.
If the oven is overheating, then you likely have a failed electronic oven control board due to a stuck relay not cycling the oven heating element off properly.


For replacement parts - head on over to PartSelect.com or RepairClinic.com and enter in your full model number for a full parts listing.
I recommend both sites because ...


FixYa has no affiliation with either site - I have been using and recommending them for years - trouble free.

PartSelect has a great schematic database for locating the part on your unit and great "testimonials" for each part that often times includes HOW-TO information.
RepairClinic has pictures of each part they sell and also a great how-to and troubleshooting for basic repairs.


If your unit has never been serviced - there should still be an original service manual enclosed in plastic taped to the inside of the shell.
In the service manual are Error codes, maintenance procedures, and troubleshooting steps you can follow.


Anything too complicated or beyond your scope should be handled by a professional.

If you think you want to tackle the repair - and have gotten stuck on a step - reply to your question and I will be glad to help you out.




Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question

Posted on Sep 25, 2010

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Are you sure about this error? The 91136669891 was made by Whirlpool for the Kenmore line. The 4 character codes for these ranges are F# E# (not two Fs).

Depending on which error you are actually have see below.

If the code includes F3 then you have a problem with the oven temperature sensor (F3 E2 would be temperature too high). You need to replace the sensor. Sears Parts Direct has the sensor for $74.12: http://www.searspartsdirect.com/partsdirect/part-number/Kenmore-Parts/Range-Parts/WB21X5301/0022/364/Model-91136669891/0582/0124250?keySuffixId=NA&pathTaken=partSearch&pathRender=modelComponent&documentCompId=P9040087&diagramPageId=00005&productTypeId=x&searchModelNumber=91136669891&subCompDesc=Body&brandDesc=KENMORE&modelDesc=30 . The complete diagram of the oven parts is available here: http://www.searspartsdirect.com/partsdirect/part-model/Kenmore-Parts/Range-Parts/Model-91136669891/0582/0124250/P9040087/00005?blt=06&prst=&shdMod= . The sensor is part 253.

If the code includes F2, then double check the second code. Whirlpool has no F2 E3 error that I know of. However, F2 errors tend to be a problem with the keypad. Check the wiring connection between the keypad and the control. This should be firm. Then press Cancel. If the error persists, you need to replace the keypad. See http://www.searspartsdirect.com/partsdirect/part-model/Kenmore-Parts/Range-Parts/Model-91136669891/0582/0124250/P9040087/00001?blt=06&prst=&shdMod= for the parts diagram and prices.

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