Question about Sharp R-1874 Convection/Microwave Oven
Everything else seems to work except that turntable won't turn and heating won't start. Door opener feels odd
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Posted on Jan 02, 2017
Most likely the bottom door switch. Dacor units are built by Sharp and that switch is a very common problem. You'd either need to check the switch with an ohm meter or remove the cover of the switch to see if it's burned inside.
Posted on Dec 23, 2008
The fact that the microwave and convection both do not heat indicated that the oven is in demo mode, check the user manual, otherwise it will possibly be a relay not triggering, may need a pcb replacement, check Demo mode 1st....Phil
Posted on Jan 08, 2009
SOURCE: Have a Sharp R930AK microwave.
You probably have a problem with the bottom door switch, or its mount may be loose or damaged.
We have the service / repair manual for this model and have uploaded it to our site here for free download to help you.
It will give you safety info, step by step help in disassembly, troubleshooting tips, and part numbers.
You can order parts from Encompass here or you can call them toll-free at 866-779-5835.
If a switch is all you need, we offer a universal type for only $5 postpaid which you can order here.
Even though a door switch clicks, it may still be bad inside.
Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.
There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.
The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.
Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.
If the switch mount is broken, it's usually more economical and safer to add a dab or two of hot glue to the mount to secure the switch. Let it cool for about 30 minutes before using.
If you still have questions, please reply back, otherwise...
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jul 30, 2009
Posted on Aug 09, 2009
I would definitely suspect the door locking mechanism in this case. If it was the sensor it would start and then stop within a short time.
The starter switch should click if you have the door open and time it for 01.seconds and press start. So that is the secon component to think of.
Posted on Nov 26, 2009
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