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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1 Answer

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

OUR AMANA Radarange. Has there been anyother complants on this unit. Any help would be appreciated. Any sugestions on whats wrong? If we try to use the microwave for more than 1 minute it shuts down in...


Hello,

the unit has developed a power fault. This issue is related to a power problem in as much as the unit turns off on it's own.

The problem is consistent with overheating on the power supply board of the unit.

The power supply board of the TV has few capacitors and IC. If any of these IC's gets short or become weak, it can cause the unit to turn off on it's own.

When current passes from electric outlet to the power supply board of unit. The current also goes to the weak/faulty part, then the current stops or slow and the board overheats and unit shuts off on it's own.

It might have worked fine in the past, but that's electronics for you. Power surge, irregular power supply, excess power supply, etc can affect the unit thereby making it to behave this way.


To actually find out what's wrong, you need to disassemble the unit with a screw driver and check what's wrong. You will be needing a meter and continuity tester in order to read the components on the power board, once you detect any bad component, you can make necessary replacement at any electronics accessories store withing our vicinity. This is the only way by which you can detect the problem.

Of course, testing the power board with a meter will require someone that has the ability. So it you can't, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.

I wish you the best of luck.

Regards.

Sep 18, 2011 | Amana Radarange Microwave Oven

1 Answer

This mircowave shuts off after 59 seconds all of the time ????


Change the Damper Motor and switch. Cost is approx $30.00 and you must remove the microwave from the mounting bracket and remove the cover to gain access to the motor and switch.

Feb 02, 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

OTR Amana microwave- No power, lights, clock or sounds.


Either your magnetron, cooling fan, or the magnetron thermostat is failing.

Since it's less than one year old, it would be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

Amana / Whirlpool customer service is here.

Please contact them to find your nearest authorized service center.

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

Jun 06, 2009 | Amana Radarange 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

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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