Question about Sharp R-1850A Convection/Microwave Oven

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Preheat problems Preheat is 50 degree's to low, how do you fix this?

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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Convection Preheat doesn't reach the Chosen Oven Temperature

I would first suspect the thermister (thermistor) or a low line voltage, weak control board relay etc.

But the service manuals will show you how to safely disassemble, test and repair the unit.

We have the service manuals for this model and have uploaded them to our site here and here to help you.

You will need the
free Acrobat Reader to view or print them in case you don't have it.

The best place to order parts for this brand is Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.

Feel free to contact me directly (and please remind me of your full model number) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
[email protected]
http://www.microwavedisplay.com

Posted on Jan 09, 2009

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    Convection Preheat doesn't reach the Chosen Oven Temperature


    I would first suspect the thermister (thermistor) or a low line voltage, weak control board relay etc.

    But the service manuals will show you how to safely disassemble, test and repair the unit.

    We have the service manuals for this model and have uploaded them to our site here and here to help you.

    You will need the
    free Acrobat Reader to view or print them in case you don't have it.

    The best place to order parts for this brand is Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.

    Feel free to contact me directly (and please remind me of your full model number) for more information & help.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

    William E. Miller
    [email protected]
    http://www.microwavedisplay.com

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    Otherwise, the temperature sensor / thermistor may have failed.

    If you don't have the manual, you can download GE owner's manuals and installation instructions here.

    Let us know if wee can help further.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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    GE Customer Service is here, and they should be able to help you.

    They may refer you to the Answer Center.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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