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Servicer  
#11 Posted : Thursday, October 28, 2010 7:13:22 AM(UTC)
Servicer

Rank: Advanced Member

Groups: Senior Expert
Joined: 2/29/2008(UTC)
Posts: 191

On his unit, the airswitch only plays a part in the broil and self clean functions. Also, the heat light would not be lit while in broil or self clean if the airswitch had failed.

KC
DonD  
#12 Posted : Monday, November 8, 2010 7:52:12 AM(UTC)
DonD

Rank: Member

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Joined: 8/24/2009(UTC)
Posts: 14

Roger - thanks for thinking of me and making your suggestions.

KC - it looks like I'm not done yet. Poking around at the relay improved things - the oven comes up to a higher temperature, but still does not reach the point of the thermostat being satisfied.

I'm thinking of ordering a new relay from APP just to see if it works. It's returnable. Does that seem like a reasonable plan? Any reason to believe it's not the relay?

Thanks,

Don
Servicer  
#13 Posted : Monday, November 8, 2010 8:09:50 AM(UTC)
Servicer

Rank: Advanced Member

Groups: Senior Expert
Joined: 2/29/2008(UTC)
Posts: 191

Hello,
Again, it all depends on when the heat light it doing. If the light goes out prior to reaching temp, the thermostat is out of calibration. If the light is still on, but the oven has stopped heating, it's the thermostat.

If the thermostat is out of calibration, you can use the attached sheet to recalibrate it.

KC
File Attachment(s):
Thermostat_Calibration.pdf (107kb) downloaded 40 time(s).

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DonD  
#14 Posted : Monday, November 8, 2010 11:05:25 AM(UTC)
DonD

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Joined: 8/24/2009(UTC)
Posts: 14

Originally Posted by: Servicer Go to Quoted Post
If the light is still on, but the oven has stopped heating, it's the thermostat.


The heat light stays on. Do you mean "it's the thermostat" or "it's the relay"? I thought earlier you said that if the light was still on the thermostat was OK.

Thanks for the calibration info. That'll come in handy.

Don
n6ac  
#15 Posted : Wednesday, June 26, 2019 5:28:44 PM(UTC)
n6ac

Rank: Member

Groups: Registered
Joined: 6/26/2019(UTC)
Posts: 0
United States
Location: CA

Hello all.
Our MSC228-4 )24" double oven, 1972) has stopped working on lower oven.
Is there a relay in this unit? I have never heard a click sound.
Is a schematic wiring diagram available somewhere?
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