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What is the problem of error 12 (E 12) Unit combi oven Brand: rational Model: CM61

Posted by Roy detecio on

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Marc Donnelly

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  • 20 Answers

The main fan motor is defective

Posted on Nov 19, 2017

  • omar aitagadir
    omar aitagadir Mar 16, 2022

    How to fix it please??! I'm suffering with this prob


4 Related Answers

Capt Rick

  • 81 Answers

SOURCE: is there such a thing as a descaling unit for a

These combi ovens are so prone to problems if you do not have descaling filter system hooked to the COLD water supply (the only water that should be fed to this unit) for your generator inlet. The other water hookup is for your condensate drain (condenses steam leaving cook chamber headed down the drain) and it does not need to be filtered but, also needs to be COLD. These decaling units are quite pricey but, a service call to replace the generator (boiler in laymens terms) will cost 3 times as much & the unit will be down for days waiting on parts. Call Blodgett w/ your model # & talk w/ technical service & ask their recomendation. They can be reached @800-331-5842 & follow the prompts. Depending on your water conditions it is still recomended to descale the unit on a regular basis using a QUALITY descaler (not the junk you buy from Sysco or Dollar general) Cleveland descaler is the BEST.

Posted on Jul 25, 2009


  • 7 Answers


your oven is electric yeah? the hot air element shouldnt be glowing like that, it glows with the door open? the oven has a over temp stat so if the oven got too hot then it would trip out, if it does then the solid state relays will have to be changed, but if it carries on as normal then shouldnt worry

Posted on Apr 05, 2010


  • 1 Answer

SOURCE: rational combi oven service manual

Alarm beeping control board not working

Posted on Feb 18, 2011


Jorge Casillas

  • 8 Answers

SOURCE: does a rational combi oven have a cut off switch ?

First check fuses, then check your donut transformer located at bottom of oven behind water line area

Posted on Nov 11, 2015

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When cleaning the rational combi steamer without tablets then don't work any option

No, you have to use the tablets. They are block oven cleaner and highly caustic. You could spray with Easy Off, leave a few hours and run the cleaning program. One of the great things about the Rational Oven is that it cleans itself spotlessly like brand new. I did ours every Sunday night at 11:00pm, 1 Red Round Tablet and 3 Blue rectangular tablets. Set to heavy soil, next day it was like new. When I retired, I took a video of it to remind me how neat it was.
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I have a fault code on combi oven Rational CM61 THE FAULT CODE H20

Either you have scale buildup on the water level probe or a faulty filling valve.
Jun 27, 2017 • Combi Ovens

I have rational CM61 E ,display showing error E12, if know this anyone pl. share this

Hi, error 12 is displayed when the oven pcb is too hot, check that the air filter is clear and the cooling fan is running. Also it could just be the software, if it is an older oven and has the original software then it may just need upgrading by someone who knows what he/she is doing.
Jan 05, 2014 • Combi Ovens
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