Question about Sharp R-1850A Convection/Microwave Oven

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Amana OTR Convection Microwave runs 59 seconds and shuts off

Amana Radarange Model aco1180ab runs only 59 seconds and shuts off. This happens in all modes (convection or microwave). It does heat in both modes, it just stops after exactly 59 seconds. Cannot find parts list or repair manual to help troubleshoot. Any ideas?

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  • David Green May 19, 2013

    I have the same problem, wonder what's the solution?

  • HotCap Jan 27, 2015

    I bought a Sharp Microwave Oven with Sensor, Grill and Convention functions, R-967(SL)M, a few years ago in London, United Kingdom. Problem: Now, each time the timer counts down to 1 second (for example, 1 sec. or 2 mins. 1 sec. or XX mins 1 sec.), the heating function just stop as long as the timer shows 1 second. In addition, I relocated to Hong Kong and the local Sharp customer service refused to provide any repair service (even if paying!) since I did not buy the product model in Hong Kong! The warranty period has ended, hence there is not an issue with warranty service. Appreciate if any expert(s) out there could kindly provide assistance or at least offer a direction/suggestion which I could pursue to get the appliance back to working again. Thank you!

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This sounds like either a thermistor or a damper switch/motor problem.
Amana's technical support line is 866-426-2621. This is the commercial side but they should be able to get you in touch with the domestic side.

Posted on Sep 12, 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 will only run for 59 seconds and then shuts off. It will heat up what ever you are heating but shuts off after 59 secounds no matter how many minutes you program into it.Is there a simple solution...


Yes the timer has the problem, now a day it is built in on microcontroller if your microwave is digital control. The only you can do is send it to nearest service center in your area where they have that parts.
I do hope my advice help you.

Mar 27, 2011 | Sharp R-1870 Convection/Microwave Oven

1 Answer

The microwave shuts off after 59 seconds. You can push the START button and it will start again but shut off after 59 seconds. The convection oven component does the same thing.


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, 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.

Dec 16, 2010 | 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

Micro/convection stops every minute


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 could be jammed.

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.

Many models stop after 59 seconds if there's a problem with the damper saystem.

See the attached sample photo for a typical damper assembly.

We have the applicable service manuals for your Sharp model and have uploaded them to our site here and here to help you.

You will need the
free Adobe Reader to view or print it.

The best place to order Sharp parts is Tritronics. You can also call them at 866-779-5835.

For the Amana, There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

You can find helpful exploded view diagrams and order parts for the Amana by entering your full model number here.

The Amana's damper switch is called "interlock switch" and is located at ref# 15 in drawing #5. The damper motor is ref # 22.

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.

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Nov 29, 2008 | Microwave Ovens

1 Answer

Amana radar range with convection oven. Model ACO1180AS. Runs for exactly 59 seconds and stops. Push start button and it starts immediately, don't have to wait. Does this on all cycles. Thanks Ken


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.

See the attached sample photo.

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


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Apr 29, 2008 | Microwave Ovens

2 Answers

Amama 2.0 Cu ft. Radarange Microwave model# UXA3036BAB


This model does not list Stainless Steel as a feature. Stainless Steel is used in the interior (CAVITY) of a Microwave if it is a Combination Convection/Microwave Oven. The Convection Oven can reach temperatures of 400+ degreesF. This Temperature would MELT the paint off a painted interior.
Stainless Steel can be tested with a Magnet. It will not be attracted or "Stick" to Stainless.
Hope this answers your concerns!
Thanks!

Feb 05, 2008 | Amana ACM2160A Microwave Oven

2 Answers

Amana Radarange Microwave/Convection over the stove


what is the model number of your radarange? it should be found inside the microwave on the rim.

Nov 21, 2007 | Microwave Ovens

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