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Rinnai Convector 516TR Heater

Our two year old heater's not working on low temps, only works when crank up to 22 C plus. It's switching itself off and flashing 12 or I2. I've cleaned the filter at the back but it hasn't fixed the problem. Can't find my manual, can anyone help?

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  • westinvest Aug 09, 2008

    Keeps switching off, flashing 12, also cleaned the filter. Don't know what to do

  • tpl_l Aug 15, 2008

    We also have been having the same problems , it has been about 2-3 years.

    Tried cleaning the filter as well (both at the back ), moving all obstructions to the vents in the front. Still keeps doing it. Cant find the instructions. what does the "12" stand for???

  • munch642 Aug 25, 2008

    Thanks for your efforts. It was actually a filter problem. I didn't realise there were two and it needed cleaning, so it's working perfectly....

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Hi, Here is the link to the manual. I think something like 'thermo coupling' probably means you need a technician! 
http://www.rinnaisales.co.nz/tradesmart/rinnai2/pdfs/installations/153.pdf

Posted on Aug 25, 2008

  • hello799r Aug 25, 2008

    How to check the thermocouple on a different but similar model:

    http://www.paulsupply.com/files/rinnai42...


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Hi there im not sure whats wrong with my fireplace> when when i plg it in it keeps flashing on and off.

Posted on Apr 08, 2011

Flashing 12, is actually the gas pressure. I undid the heater from the wall, re-connected it and have had no problems. A gasfitter told me what to do

Posted on Aug 26, 2008

Hi, Here is the link to the manual. I think something like 'thermo coupling' probably means you need a technician! 
http://www.rinnaisales.co.nz/tradesmart/rinnai2/pdfs/installations/153.pdf

Posted on Aug 25, 2008

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Instructions say "12" means incomplete combustion, check thermocoupling. anyone know what that means???

Posted on Aug 15, 2008

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