Question about Rinnai RHFE-431FAIII 16,700 BTU Direct Vent Furnace Energy Saver Heater - Natural Gas

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Not working the heater starts up OK and works for a few minutes then it cuts out and the number 12 comes up on the digital display. then when i try ot turn it on again, it just clicks and clicks and clicks but won't start. if i leave it for a while it will turn back on but then it just cuts out again.

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Code 12 is a gas supply error code or an ignition failure. There is no pilot light in this unit. I would suggest you get a technician in and have him/her inspect the burner tray for a buildup of spider webs or other debris. To do this you will need the burner assembly removed from the heater which involves a number of other parts to be removed first.

Posted on May 16, 2008

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Best Solution posted on May 06, 2008 not working - 4%20stars.png
soleman13au
Rank:master_s.gif Master
Rating: 90%, 19 votes
Hi lisarinnai
I am assuming it is a Natural Gas Heater. All it probably needs is a good blow out with compressed air. They tend to carbon up in the pilot light area. You will probably also find it is very dusty inside. Easiest way to clean the carbon out is to remove the hose at the heater and with compressed air blow through the fitting where you have removed the hose. Make sure you hold down the start button so the air can get through to the pilot light and jets. Don't connect the electricity for the fan when you do this. Hopefully this should solve the problem. You may want to clean the inside of the heater out as well which mean removing the covers. They tend to get a lot of dust and dirt inside them which doesn't help either. You will just need to follow the screws to establish how to get the panelling off to reveal the inside of the heater. Hope this helps. Regards Bryan

Posted on May 07, 2008

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