Question about Heating & Cooling
An H12 indicates a flame failure, which could be caused by an obstruction in the combustion chamber, buildup of debris on the flame rod, not enough or no fuel, or no spark at the igniter. You may wish to get a technician in and look at these. One thing I have found is that spiders love to webs in the burners of these heaters and the only way to check it out is to disassemble the entire burner.
Posted on Aug 04, 2008
Tips for a great answer:
Dec 14, 2013 | Rinnai EnergySaver 556 Air Conditioner
Jun 18, 2011 | Rinnai Heating & Cooling
Jun 02, 2011 | Rinnai EnergySaver 556 Air Conditioner
Jul 27, 2010 | Panasonic Heating & Cooling
May 05, 2010 | Rinnai EnergySaver 556 Air Conditioner
Dec 23, 2009 | Rinnai EnergySaver 556 Air Conditioner
Jun 13, 2009 | Heating & Cooling
Apr 27, 2009 | Heating & Cooling
248 people viewed this question
Usually answered in minutes!