Question about Rinnai Toyostove Direct Vent Heater: Laser 30 Toyostove Direct Vent Heater Shipping

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Ee 12 code

What does this me4an and how do I fix it?

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Re: ee 12 code

Hi alaskasteve,

My business is Laser Heating Service in the North Pole/Fairbanks area of Alaska. EE12 is the error code for overheating. Most likely you have a Laser 30 giving you this error code. The most common reason for the EE12 error code is that the Toyo is not getting enough air circulation across the heat exchanger and causing it to overheat. Look at the back of your Toyo where the black frame around the circulating fan and flue pipe is. You will see a screen that slides in a slot at the back of the Toyo. Slide the screen out and clean it. If you have a smoker or the Toyo is in a kitchen area where it collects nicotine or grease then you may need to clean it with hot water, detergent, or 409 Cleaner to get the sticky residue off that the dust fuzz collects on and clog your screen. EE12 can be caused by a couple other issues, but they are more rare. Try this first and let me know if it works! toyotechnician

Posted on Jan 28, 2008

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Call manufacturer or Installer - Direct Vent Furnaces are not a DIY service. Carbon Monoxide is deadly and can easily be emitted if there is something wrong with the heater. Get professional help before anything further is done, as it needs a full inspection for your safety.

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Good luck,


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