Question about Sharp R-1870 Convection/Microwave Oven
When I use the Preheat function for the convection mode of my Sharp R-1870 microwave/convection oven, the temperature doesn't reach the chosen temperature setting. For instance, if I set the oven for 400 degrees, it will only heat to 350 degrees. There is always a 50 degree difference. I want to know how to fix this problem.
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
Posted on Jan 09, 2009
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
May 08, 2014 | Sharp R-1870 Convection/Microwave Oven
Oct 19, 2017 | Sharp R-1874 Convection/Microwave Oven
Apr 09, 2011 | Sharp R-1870 Convection/Microwave Oven
Dec 12, 2010 | Sharp R-930AK Convection/Microwave Oven
Jun 05, 2010 | Sharp R-1870 Convection/Microwave Oven
May 11, 2010 | Sharp R-1870 Convection/Microwave Oven
Jan 08, 2010 | Sharp R-1870 Convection/Microwave Oven
Oct 07, 2009 | Sharp R-1870 Convection/Microwave Oven
Aug 29, 2009 | Sharp R-1870 Convection/Microwave Oven
Aug 27, 2009 | Sharp R-1870 Convection/Microwave Oven
347 people viewed this question
Usually answered in minutes!