Question about Sharp R-1874 Convection/Microwave Oven

1 Answer

Sharp 1874- Door seems to "jar open" and oven stops

Sharp Convection/microwave R1874F in our motor home will sometimes stop working. It appears that either the top or bottom of the door will "jar itself open" during convection cooking or low bake. If the door is pushed lightly the oven can be started again by pushing the start button. This does not happen every time something is cooked but we have only been using the oven for 1 week. The motor home was new when we puchased it a couple of weeks ago.

Posted by on

  • polly495 Feb 20, 2009

    Thank you! I am going to try calling Sharp's tech. support tomorrow.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 686 Answers

If you have a warranty get a new one installed they have to honor your warranty or better yet if they want payment you want new unit sometimes they come deffective from the factory ad you may have gotten one of them

Posted on Feb 20, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman 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 repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Sharp R-1874 works only by pressing the door in

Your connection is bad. Start with a good and complete cleaning of the product. UNPLUG FIRST. Sometimes in the hinges things gum it up. DO NOT STICK anything into the door latch area.
If this continues, you have an issue that must be decided if you should REPLACE or repair. Repair will cost more than replacing. Sorry.

Mar 06, 2014 | Sharp R-1874 Convection/Microwave Oven

1 Answer

My r-1874 microwave unit will not run unless a small wood handle is put under the door. This has worked in the past but now this little trick does not work. Any idea the part that not working properly

I would say the mount for your bottom or top door switch is loose, misaligned, or broken. And you may have a failed door as well. See my help file on door switches here.

Slamming the door and opening the door while it's cooking instead of hitting the "Stop" pad before opening it both contribute to door switch trouble.

The service manuals covering this model are here and here.

You can order Sharp parts from Encompass here or you can call them toll-free at 866-779-5835.

Feb 16, 2014 | Sharp R-1874 Convection/Microwave Oven

1 Answer

Sharp microwave & convection & turn table on model R1874F won't work

That would be just a defective secondary interlock (bottom door switch) or its mount.

My help file on door switches is here.

The service manuals you need are here and here.

You can get other Sharp parts from Encompass here or you can call them toll-free at 866-779-5835.

Jan 07, 2013 | Microwave Ovens

1 Answer

Sharp Carousel Model R-1874 no heating or turning, display works

sorry without seeing the machine we can not help try whatever you want . that is how many of us learned what we know today

Nov 17, 2017 | Sharp R-1874 Convection/Microwave Oven

1 Answer

I have a sharp model 1874 when you punch in the mintues it will only go to 59 seconds and shuts off. if i hit 10 mintues it will stop at 9:01

change damper motor and switch. cost is approx $30.00. unit must have cover removed to gain access to motor & switch

Dec 15, 2009 | Sharp R-1874 Convection/Microwave Oven

1 Answer

R-1874 shuts down after 59 seconds

That switch is supposed to tell the computer if the damper door is open or closed. If it does not go to zero ohms, the CPU doesn't know what to do. Check the thermistor too...... just in case...

Sep 12, 2009 | Sharp R-1874 Convection/Microwave Oven

1 Answer

Microwave Key Pad stopped working

buy a new one they are not expensive wal-mart has 1000w for about 80 bucks

Jan 25, 2009 | Sharp R-1874 Convection/Microwave Oven

1 Answer

How do I remove the door from our Sharp R-1874 microwave

Fixed the problem without any help from anyone. If you ask and ask and get no help I guess it is time to take on the problem and see if you can resolve it and I did. NO IT WAS NOT EASY but with a little thought and time over the last 2 days I did get the door changed. Thanks for letting me post even though I got NO help.

Dec 09, 2008 | Sharp R-1874 Convection/Microwave Oven

1 Answer

Sharp r-1874 - 59 sec

We have the service manual, and have uploaded it to our site here. It is only a supplemental type, so it does not show disassembly, but it has helpful info and part numbers

We have a handy disassembly video at

This is a problem in one of the damper-related components, most likely the switch, but it may also be the motor or the damper door.

The damper is a door inside that opens or closes depending on cooking mode. If the controller senses that the door is not in the right position, it will shut down the cook cycle.

Sharp models stop after 59 seconds.

See the attached sample photo for a typical damper assembly.

The best place to order Sharp parts is Tritronics.

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


Jul 22, 2008 | Sharp R-1874 Convection/Microwave Oven

Not finding what you are looking for?
Sharp R-1874 Convection/Microwave Oven Logo

Related Topics:

196 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sharp Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9086 Answers


Level 2 Expert

225 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Sharp Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides