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Our Kenmore Electric oven (790.94469700) has started taking a very long time to preheat - we timed it today at 35 minutes to get to 350. I think it holds the temp okay once it gets there, it just takes it an extra long time to get there. Jury is still a bit out on the temp holding, but we think so.
Anyway, the baking element is under a bottom pane, so you can't see it at all. In the meantime, the broil element doesn't come on during preheat, but when I put the oven on broil, it lights up pretty fast - so I know it actually works.
The fan, which, according to the manual, is supposed to be for convection, runs any time you are baking, including during preheating. I'm not sure if it's always worked that way, but my wife says that's normal.
This doesn't seem simple to me, but hopefully it is to someone else. Can anyone take a guess as to what's causing my issue?
Thanks much for any help.
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Thanks - that's kind of what I was afraid of. This oven has a convection setting but, from reading around, I think convection and speed bake are the same exact thing. So, based on that relay chart, it doesn't look like it should be working. It also seems, from that chart, that it should be alternating turning on the broil element, which I'm not sure it does either.
Of course, all of that would point toward the control board to me, particularly if the heating elements are working.
A couple of other thoughts/questions though...
I turned it on preheat and the after a few minutes, the broil element was warm, but not hot. When I set it to broil, it was red in no time. Given that it seems as if it's supposed to use the broil element too in cooking, is it possible that the broil element is the problem?
Also are there any tricks to reusing the old overlay?
Finally - is there a chance the issue is actually with the relay board and not the control board?
Thanks again!
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A little more info here...the fan only runs during preheat - which is what my wife initially said anyway. So I think that's okay.
However, I laid on the floor and watched it preheat for 20 minutes, after which it only got to about 230 degrees (I have an oven thermometer). During that entire time, the broil element never lit up. I did notice a pattern with the relay clicks after about 2 minutes. I would hear a single soft click at the 30 second mark of each minute, then a louder double click at the 50 second mark and then another loud double click right at the minute mark. I'm wondering if this was supposed to be the part where it would cycle the broil element on...?
I started trying to cheat and decided to stop the preheat and turn the broiler on for a few. It shot up to 350 in under 5 minutes. I turned off the broiler and then tried to preheat. Any temp I selected immediately said it was ready (long beep, etc) all the way up to 475. I'm assuming that the heat wasn't even and affected the temp sensor, but who knows. Anyway, now I'm going to check and see how well it holds temperature. What should the tolerance be? I mean how low below the set temp will it go before it starts heating again?
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And a little more info as well...after it dropped down to 300 degrees, the elements started coming on. This stove has a couple of little indicators that indicate what element is on - a bar above and below the fan icon to show the broil and bake elements respectively. While I was watching it, it would turn the bake element on for 50 seconds, then the broil element on for 5 seconds, then both off for 5 seconds. From looking at the tech sheet, I think it is supposed to cook this way. But I would kind of expect the broil element to have a longer cycle than the bake element, especially since the bake element is underneath a covering plate.
Does any of this make sense? Does anyone know if it's supposed to work on this cycle? Or is this just telling me that the bake element just can't keep up with the heat demand(i.e., it's bad)?
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Well...think I found the problem... Turns out the bake element was fine but the board was never sending it any voltage, so all my baking was done with 10 seconds of broil out of every minute! I replaced the board and now it preheats to 350 in about 11 minutes. Only thing is, it seems the temperature is off. The thermometer I was using before was right in line with the temp the stove read, but this now seems to be a ways off. Is that something I would expect to happen here? I know they're supposed to be calibrated from the factory, but would that not be accurate here since it's a different part in the stove? doncaruana attached the following image(s):
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You should be able to calibrate it plus or minus 35 degrees, at least that is the norm.
The procedure should be in the Use and Care Manual. |
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