I am getting error code 11 on one of my Renai water heaters and 12 on the other. Today is extremely cold outside - it has never been this cold before and I have never had any problems. Could this be related to the outside temp? Might this problem fix itself when it warms up outside?
Heating & Cooling - Rinnai - RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - LP Gas
Answers & Comments
If you are on lpg it could be the low vapourisation rate of the cylinders both codes indicate no gas or ignition fault