Question about Sharp R-1874 Convection/Microwave Oven

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Every 59 seconds the unit stops

No matter what cycle or how long we set the unit to run, it shuts down every 59 seconds

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  • hove382 Mar 21, 2009

    Mine also makes a noise, almost like the turntable is rumbling, but it is not the turntable. It stops after a minute or so. I have a 2005 Holiday Rambler Ambassador. Anyone know how to remove the microwave?

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Does anyone know what this problem is

Posted on Sep 18, 2009

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Sharp microwave r1870 only runs for 59 seconds


If it consistently runs for exactly 59 seconds, and shuts off, it's probably the control panel.

If it runs approximately that length of time, you might have a defective thermal protector on the magnetron, or the magnetron is running too warm for some reason.

Mar 24, 2016 | Sharp R-1870 Convection/Microwave Oven

1 Answer

My Sharp R-975 Microwave after settin the timer and starting only runs for 59 seconds and stops, I can press start again and it goes for another 59 seconds


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 drawing for a typical damper assembly.

I'm not sure this is a US model or if parts are still available, so look up Sharp in your country.

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

microwavesvc_30.jpg

Mar 13, 2011 | Sharp Microwave Ovens

1 Answer

My Sharp micro will stay on for 59 seconds and shut off no matter how long the timmer is set. Sharp model r 1870 It does this every time it is used . The control board has been replaced.


This is not a problem on the board, it 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 drawing for a typical damper assembly.

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

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.

Dec 17, 2010 | Sharp R-1870 Convection/Microwave Oven

1 Answer

It only cooks for 59 seconds and then stops and I have to keep pushing stop every 59 seconds


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 (and Sharp-made Dacor and Wolf) models stop after 59 seconds.

See the sample drawing for a typical damper assembly. http://www.fixya.com/uploads/Howto/B27054B.jpg

We have the applicable service manuals here and here.

You can order Dacor parts by part number from Encompass here.

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

b27054b.jpg

Sep 13, 2010 | Dacor DMT2420SS Microwave Oven

1 Answer

The microwave will only work for 59 seconds then it stops. It is working but only for 59 seconds. I am not sure about the convection oven was afraid to try it. The unit is in our fifth wheel RV. I can heat...


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 drawing for a typical damper assembly.

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

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.

damper.jpgdamper.jpg

Apr 18, 2010 | Sharp R-1870 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

Sharp model R-1871 shuts off every 59 seconds


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 drawing for a typical damper assembly.

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

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

b27054b.jpg

Aug 30, 2009 | Sharp R-1871 Convection Microwave Oven

1 Answer

Sharp model R-1870 Carosel quits cooking at 59 seconds


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.

We have the applicable service manuals for these models and have uploaded it to our site here and here to help you. You will need the free Adobe Reader to view or print it.

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.

Jan 26, 2009 | Sharp R-1480 Microwave Oven

1 Answer

Microwave/convection oven quits at 59 seconds


This is a common 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.

We have the applicable service manuals for these models and have uploaded it to our site here and here to help you. You will need the free Adobe Reader to view or print it.

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.

Jan 26, 2009 | Sharp R-1480 Microwave Oven

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