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FIXED Older Amana Electric Wall Oven. Only has a warm (not hot) lower Bake Heating Element. Need Schematic Also

Rke

Premium Member
Joined
Mar 20, 2020
Messages
8
Location
Michigan
Model Number
AO-24SB
Brand
Amana
Age
More than 10 years
Hello all:

I have an older Amana Electric Wall Oven "Model AO-24SB". Manufacture # P85567-1S. Probably 30 years old. Some places it's called a "Maytag AO-24SB" model.

The lower baking element will only be warm (not a hot red glow) when the oven in on bake. The upper broiler element works fine.

I have a few questions please:

1. What is the correct resistance range (ohms) for a good lower heating element? I want to compare a good one to mine.
Since the lower element does get hot a bit I'm assuming that continuity is still there. The oven will get to about 250 degrees, but that is it.

2. The upper broiler element has a slightly different shape. Can I swap out the upper heating element to the lower one as just
a test to see if it's truly the lower element that is bad?

3. What would then be the next step in trouble shooting beyond the heating element. The temperature sensor? If so, what would that resistance be?

4. I'm also looking for an electrical schematic for this wall oven. I have pulled the front panel hoping there was a copy of it there but to no avail.
Would it be on the back side of the unit.?

5. Where can I get a service/repair manual? and maybe an electrical schematic. all the "ManualLibs" websites don't have them.

Any assistance would be appreciated. Thanks.........
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
3,831
Location
Ontario, Canada
Rke said:
1. What is the correct resistance range (ohms) for a good lower heating element?

It doesn't matter. If it heats at all, the element is not the problem. If it was failed, it wouldn't heat at all.

LINK > How do I test an electric stove element?

Rke said:
2. Can I swap out the upper heating element to the lower one as just a test to see if it's truly the lower element that is bad?

That is unnecessary.

Rke said:
4. I'm also looking for an electrical schematic for this wall oven. Would it be on the back side of the unit.?

On older cooking appliances that is a very common location for it.

Rke said:
5. Where can I get a service/repair manual?

I really doubt you'll find that anywhere. When I get a chance I'll see if I can look up the manual's part number ... if there even is a service manual for it.

3. What would then be the next step in trouble shooting beyond the heating element.


Check the wiring going to the element. One side might be shorted to ground causing only 1/2 power to get to the element.


Dan O.
 

Dan O.

Appliance Tech
Staff member
Joined
Oct 9, 2004
Messages
3,831
Location
Ontario, Canada
The service manual is part # R2330-7 but as I said, I doubt you'll find a copy anywhere.

Here is a bit of the wiring diagram that covers the bake element. There should be a paper copy in or on the appliance somewhere, quite possibly glued to the rear or top cover.

AO-24SB-wiring.jpg


Dan O.
 
Last edited:

Rke

Premium Member
Joined
Mar 20, 2020
Messages
8
Location
Michigan
Dan O. Thank you so much for the answers and the advice. Have a great day.... This will help.........Rke
 

Rke

Premium Member
Joined
Mar 20, 2020
Messages
8
Location
Michigan
I was able to pull the wall oven out. The schematic was on the side of the unit. Here is a copy if anyone ever needed it.

Thanks again..........Rke
 

Attachments

  • SCHEMATIC_DSCN1394.JPG
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Rke

Premium Member
Joined
Mar 20, 2020
Messages
8
Location
Michigan
I matched up a different lower bake element that had a similar configuration of the element as the old one. Mounting and lead spacing was almost identical.
Element works good. I used part # WP77001094. It may also be called MAY77001094. Other reference #'s were UPC: 687152258253; CH5910; 59552; and maybe UPC # 769388788459.
I had to relocated the mounting holes slightly so the new element would mount to the back of the oven wall with the same screw holes as the old element.
No big deal.....Thanks
 

Rke

Premium Member
Joined
Mar 20, 2020
Messages
8
Location
Michigan
redrawn schematic
 

Attachments

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    REDRAWN SCHEMATIC DSCN1395.JPG
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