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F-5 Erro Code on Dometic Convection Microwave DOTRC17SS

I have the Dometic DOTRC17SS convection microwave in my motorhome and I get a F-5 error code whenever I try to use the convection oven. This error occurs about 30 seconds into the preheat phase and once that happens, the oven beeps, displays F-5 and I cannot use the oven until I unplug the unit or reprogram the clock. Using the microwave portion seems to work fine. I randomly get this F-5 when powering on the motorhome - essentially plugging it into ground power. The owners manual has nothing on error codes or troubleshooting for this type of problem. The unit is less than 1 1/2 years old and has worked fine up until now.

I have sent Dometic a email also.
Thanks for any input.

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  • 3 more comments 
  • Anonymous Mar 22, 2009

    Same Problem as previous post. Tried the clock reset and now it works, for now anyway.

  • sunnybrookk Mar 26, 2009

    Same problem, our micro in our 1 year old motorhome. Talked to a service center, they suspect the control board but micro has a 3 year warranty for original purchaser. Made an appointment to bring motorhome with micro in for diagnoses.

  • William Miller
    William Miller May 11, 2010

    I would suspect the thermistor / temperature sensor, but getting help on Dometic units can be tough.

    Did you contact Dometic through this page?

    More contact info is here.

    Please let us know what you find out so we can help others, too.

  • Gale Webber Jul 01, 2012

    I have a Dometic DOTRC178 in my motorhome which also does an F-5 whenever I try to use the convection oven, microwave is fine. It always shows an F-5 whenever power is interrupted. I had the same problem with a previous Dometic oven which gave an F-5 and they replace it with the current one which does the same thing.

  • Gale Webber Jul 01, 2012

    We have an Dometic DOTRC17B convection/microwave oven in our 2005 Alfa. The first Dometic M/W was replace under warranty for a F-5 code. The replacement oven, same thing F-5. Error code shows up whenever the power is interrupted or try to use the convection portion of the oven. The microwave function is fine. I will pre-heat the oven and it will either fault part way through the pre-heat or during the cooking cycle. I have never been able to cook anything in this oven. I called Dometic and they say "We have never heard of a F-5 error code and can't help you". Yet, I do a Google search, and there are F-5 complaints all over. We have had this oven for 6 yrs and have never been able to properly use it. I just decided today to do a search and see if it something I can fix. Thank goodness the Alfa comes with a regular gas oven, because the Dometic is useless. My only solution may be to replace it with a Non-Dometic unti since Dometic can't help me.



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The F-5 displays indicates that the control board has failed and it will have to be replaced. You will have to call the Dometic/LG dealer closest to your location and arrange for a visit / repair.

Posted on Feb 07, 2011

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