Question about Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - Natural Gas

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Rinnai monitor heater 1004F

The heater is flashing the number 12. It turns on, then the heat turns on, but then it stops and blows cool air...what do I do????

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  • aztecapr1 Feb 13, 2008

    I havent been able to use the link I was given for information on why my heater isnt working. I rent a large farmhouse and it is the only source of heat that my young children and I have. We are in the middle of a big snow storm and we are very cold. Can anyone out there please help me????????

  • aztecapr1 Feb 13, 2008

    I TRIED THE LINK ( http://www.rinnai.us/Rinnai.aspx/FileLib ) FOR A SOLUTION TO MY PROBLEM BUT TO NO AVAIL. THE WEBSITE IS UNAVAILABLE OR HAS BEEN CHANGED. DO YOU HAVE ANY OTHER IDEAS?

  • aztecapr1 Feb 14, 2008

    If the heater is flashing #12, check to make sure nothing is in front of the outside vent. I went out to check mine and there was no snow or ice around it, BUT there was a snow bank 1/2 foot IN FRONT OF IT. I shoveled the bank to below the vent level and the heater began working again.

  • Gerardo Toyloy
    Gerardo Toyloy Mar 29, 2014

    yes it work thank you, code 12 come out when exhaust pipe in the outside is block.

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Http://www.rinnai.us/Rinnai.aspx/FileLib

hope this helps

Posted on Feb 13, 2008

  • Hjalmer Lamminen
    Hjalmer Lamminen Feb 14, 2008

    code 12 is low gas pressure, or that the flame sensors are not picking up a flame, try removing the flame rods, in a rinnai infinity when you pull the cover off they are right in the middle, you can use a file to clean any carbon etc off,

    Actually the Rinnai 1004 has an E2prom chip in it that should hold your last setting. If there is a power outage longer than 12 hours, you may have to reset it

    Try and unplug you heater for a few hours and see if the settings stayed. Extend the durration until you find the point of no return. Check all the error codes stored in the unit by holding down on the Economy button as well as the up and down arrows all at the same time. Because you will need both hands to do this, get a friend to write them down as they are displayed.

    The rinnai website is not abvailable.
    Try these things
    aotherwise call 911

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