Question about Sharp R-1870 Convection/Microwave Oven

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59 SEC NEED TO GET FRONT OFF MICRO

I AM TRYING TO GET THE COVER OFF THE FRONT OF BUILT-IN MICRO, IT IS NOT COMING OFF

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If your unit runs for 59 seconds then stops, the problem is the convection damper motor. (Sharp part # RMOTDA222WREZ).
Unfortunately, you cannot access this from the front - the whole unit has to come down as the entire outside cover has to be removed.
This is a pretty major job and the motor (located below and behind the magnetron tube) is rather hard to remove and get back into place. This is probably better left to an experienced technician. You can call Sharp 1-800-BE SHARP for a referral to an authorized servicer.

Posted on Jul 23, 2008

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Sharp micro counts down 59 seconds and stops


It seems this has been happening over the last few years. I am a retired appliance tech. My 1870 also started the 59 second routine, Also in a motor home. Pure logic. Had to be the board. New board same results. So now I need to run down a parts manual and possibly service manual, and get the damper switch and motor refered to in earlier posts. Changing out the board was fairly simple. Dropping the unit to change out the other components sounds like it will be a tad bit more difficult.

Oct 14, 2012 | Sharp R-1870 Convection/Microwave Oven

1 Answer

Unit shuts down every 59 sec. No matter how much time, with or without anything in micro and I figure to replace motor and switch. How do I get to those parts in unit? Does it have to come down?


This is a problem in one of the damper-related components, either the switch or motor or the damper door may be binding.

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.

Dacor-branded PCOR30-series microwaves are just cosmetically altered versions of the Sharp R1870-series ovens.

These Sharp-made models stop after 59 seconds when there's damper toruble.

See the attached sample drawing below for a typical damper assembly.

We have the applicable service manuals for the Sharp models and have uploaded it to our site here and here to help you in disassembling and troubleshooting your Dacor version.

You can find the Dacor PCOR parts list here and you can order Dacor parts by part number here.

If a switch is all you need, we offer a universal type for only $7.50 postpaid which you can order here.

You will have to remove the oven from the wall and remove the outer cover to access, test & replace damper parts.

Just refer to your installation instructions.

If for some reason you don't still have yours, scroll down to the bottom of this page to find yours.

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

Sep 29, 2011 | Dacor PCOR30 Convection/Microwave Oven

1 Answer

Pcor30s shuts off at 59 sec mark. Do I need to take down to get to damper motor,switch and door? Is it on rt. Side? Thanks, rick


They're on the left side, and yes, you need to remove the oven from the wall, then take off the outer cover to get access.

This Dacor oven is just a cosmetically-altered version of the Sharp R-1870-series ovens.

So the installation instructions for the R-1870-series will help you get it down. They're here.

We have the R-1874 service manuals here and here, and the PCOR30 parts list here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Sep 29, 2011 | Dacor PCOR30 Convection/Microwave Oven

1 Answer

Stops every 59 sec.


This is a problem in one of the damper-related components, either the switch or motor or the damper door may be binding.

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. That's the giveaway.

See the attached sample drawing for a typical damper assembly.

We have the applicable service manuals for some of these models and have uploaded them to our site here and here to help you.

Hopefully these cover your model number, which you didn't mention.

If a switch is all you need, we offer a universal type for only $5 postpaid which you can order here.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

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Jul 07, 2010 | Sharp R-1870 Convection/Microwave Oven

1 Answer

I have a sharp microwave mod.#r-1870 you can set it for 5 mins.it will run 59 sec.then shut down you start it right back and it will run 59 sec. and shut down again.


i think there are some problem occured with the autocut n timer....its a genuine prob go to any electrician...thnx

Feb 26, 2010 | Microwave Ovens

1 Answer

Sharp r96st stops at 1 sec and halts whilst preheating oven


This is a problem in one of the damper-related components, either the switch or motor or the damper door may be binding.

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.

Info on ordering Sharp UK parts / spares is here.

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

b27054b.jpg

Jan 29, 2009 | Sharp R-1480 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 http://www.microwavedisplay.com

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.

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

5 Answers

Shuts down after 59 sec


Chances are you have a bad damper switch or wiring. A sample photo is here: http://207.234.249.73/mwd/damper.jpg It might also be a problem with the humidity sensor or a problem with the control panel, such as corrupted code or bad connections.

Dec 20, 2006 | Sharp R-1850A Convection/Microwave Oven

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