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Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - LP Gas
Problem for Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater...

Thermostat beeps




By rcross194 on Jun 22, 2009

" "
thermostat beeps when tankless heater goes on. 12 flashes on readout

Clarification Request

Posted by blender719 on Jul 18, 2009

Error is on the energysaver when the water heater starts??? LPG or NAT Gas??

Solution #1

posted on Sep 14, 2009
Not Rated)

NtenseZ71

Rank: Master 
Rating: 98%, 6 votes
That is a code which your owner's manual will assist you in finding. Usually 12 is ignition failure, such as no flame reading from the sensor, or lack of fuel. If the unit isn't grounded properly, it won't verify flame properly. Could be caused by a dirty flame rod, faulty gas valve or no fuel to unit.
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