Kenmore model 790 oven pre heats incorrectly off by 50 degrees

SOURCE: Preheat taking long time

If your oven has the hidden bake element then it is probably working properly. A standard oven with an exposed bake element will usually take about 12-15 minutes to preheat. The hidden element models take a little longer but they usually heat a little more evenly.
Post back if you have any more questions.

SOURCE: Unkown SCSI Problem

Hi Fatoil ,

Have you tried another SCSI port , another SCSI card , another SCSI drive , swopping if it is card problem or drive or both problem ?.

If you have a spare SCSI hd , plug it in to same port and see if it works . Swop to another port and see if the spare SCSI hd works. Swop to another SCSI card and see if spare SCSI hd works.

All this elimination will narrow down the problem .
SCSI cards are not expensive ,.
old working SCSI hds don't cost you anything if you have them.
Sending out the server for servicing will cost you.
I presume you don't have a maintenance contract for this server .
If you have , get them down to settle it .
If you don't , after you settle this matter , make sure you get a maintenance contract for all your critical servers / equipment.

Maint Contracts seem expensive when nothing breaks down. However , when they do , it makes every worry go away.

Good luck,
David

SOURCE: oven doesn't heat up enough

More than likely the oven requires a new thermostat, but would recommend an Appliance Repairer to confirm this solution.

SOURCE: Set oven to pre-heat to 350; won't go above 100

could be one of 3 problems: missing 240volts and only have 120volts(one leg out)/bad element(chk for "hot-spot") pitted and discolored-it will soon break there/or the thermocouple is bad that senses oven temp

SOURCE: Kenmore builtin oven model 911 4742990

Here is some wisdom for understanding F1 fault codes.

In some models, there are subcodes that make diagnosis even easier.

Here's a simple explanation of what's going on and how to troubleshoot:

The F1 code indicates that:


a. The electronic range control (ERC) is sensing heat in the oven when in a time-of-day (i.e., not cooking) mode.

b. The ERC is receiving information to run multiple heat functions simultaneously.


Although different components (depending upon the model) could generate the code, simple and straightforward testing using your ohm meter is all you gotta do to test for it.

1. Check the oven temperature sensor. The oven sensor has to be within spec or it will cause the F1 code.
As an example of being out-of-spec, the ERC will generate an F1 fault code when the sensor shows 1650 ohms during a time-of-day mode.
This is equivalent to 350°F in the oven.
The resistance isn't high enough to generate an F2 code (runaway temp) or an F3 or F4 code (shorted/open sensor circuit).
The ERC monitors the sensor circuit after a heat cycle and expects the resistance to drop back to 1050-1100 ohms.
The fault code is generated when this doesn't happen. Checking the sensor circuit means also checking the harness,
harness connections and the sensor itself.

2. If the oven sensor circuit checks okay, then turn your inquisitive eyeballs to the touchpad.
If the range has a separate touchpad/keyboard, the keypad may have moisture that is shorting several circuits simultaneously.
If the F1 code is given immediately (instead of during or after a heat cycle),
remove the ribbon connector from the touchpad to the ERC after clearing the F1 code. If the F1 code does not return in five minutes,
then cast a suspicious gaze upon the touchpad/keyboard. Shorts may be caused by using an ammonia-based glass cleaner.
The touchpad surface will absorb ammonia-based cleaners that are sprayed directly on the glass surface. When heat is applied,
the surface material can break down causing shorts.
If you're gonna use ammonia-based cleaners on your control panel, then you should spray it on the rag and then wipe the touchpanel
-don't spray directly onto the surface of the touchpad.

3. On Amana ranges with a rotary temperature dial, be sure that the knob is in the OFF position when performing tests.

4. If these tests all check good, then replace the ERC.


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