Question about Sharp R-1870 Convection/Microwave Oven
That should be the default condition.
The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.
If that doesn't work, leave it unplugged for about 5 minutes.
In case it may help, the owner's manual is online here:
If it's not an operational issue, you probably have a failing thermistor. The part number is FH-HZA053WRE0 (those are zeros, not ohs).
We have the applicable service manuals for these models and have uploaded it to our site here and here to help you.
You can order parts from Encompass here or you can call them toll-free at 866-779-5835.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Sep 08, 2010
Testimonial: "Thank you for your quick response, I have tried the hard reset and then left it unplugged for half an hour and still have the same problem. "
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Posted on Jan 02, 2017
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