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

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Rinnai 1004fa error code 12 what do i do to fix this problem

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  • Anonymous Jan 06, 2008

    I turn on my Rinnai 1004f and I can see the igniter lighting but no accompanying flame and the unit starts to flash the code 12.

  • aztecapr1 Feb 13, 2008

    I am having the same problem and the fan blows, but no heat. #12 is flashing.... in the middle of a snow storm...real nice!!

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Page 35 of the following: http://www.rinnai.us/Rinnai.aspx/FileLibrary.aspx/DealerResources.aspx/DocumentsLibrary.aspx/WallFurnacesDirectVentMainHeatSource.aspx/RHFE1004FA.aspx/GeneralInformation.aspx/456RHFE1004FAManual32003.pdf.aspx hope this helps :)

Posted on Mar 01, 2007

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This link is not working http://www.rinnai.us/Rinnai.aspx/FileLib

Posted on Feb 13, 2008

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1 Answer

Heater goes out after 20min error code 12 appears


Definately a gas supply problem. If it was an overheat you would get a different code. Error code 12 meant a flame was there but then went out. The code 11 meant tried to light but no flame sensed. Error code 12 on heaters and Infinites is nearly always a fault on the gas regulator at the bottles. Sure I recognise your company name from up in Queensland. As you might know we hae had problems with an oily residue in some regulators for ages. I am recommending going away from two stage regs and spliting them up with a seperate first stage and then a second stage. Bit more expensive by zero call backs.

May 24, 2010 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - LP Gas: water heater gives a code 12...


Error code 12 on a Rinnai means the unit lit, sensed a flame but then failed to sense it some time later whilst in operation. Most commen faults causing this are gas regulator based on LPG systems. The regualtor fails to let enough gas through to continue powering the burner. I did have another where the guy had put a natural gas model on LPG supplies, you didn't say if this fault was on a newly installed sysyem or not!
One other cause (not so well known) is if you when you get a 12 immeadiatly you turn the tap on. This is caused by a short circuit on the low voltage side of the heater. I'm guessing you have controllers to display the error code. I've had a few where a bit of DIY work has put a nail though a wire supplying the controller and caused a short. The wiring is only 12 volt so it doesnt blow any fuses. If you do have controllers, get a qualified person to remove the front of the heater and disconnect the controller lead from the circuit board, see if this stops the fault. If it does, try and find the short in the wire (even had rats cause this in one location)
If this doesnt work get the technician to check the overheat loom around the heat exchanger, this is another favorite place for the wiriing to short.

Happy hunting.

May 17, 2010 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

2 Answers

Error code 12


Three main causes.

Short circuit on the low voltage side of the wiring (12V) This will show as an immeadiate error code 12 befoe the thing even tries to light.

Faulty earth on the low voltage side shows same as above.

A faulty gas regulator or partial blockage of gas supply that allows the unit to fire, but will not maintain sufficient gas supply to keep it alight. This will happen after it has lit, maybe erratically with the occasional error code 11 if you try and re-light immeadiately.

May 13, 2010 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

Error code 12


Hi,

The error code 12 normally refers to a flame failure/front flame rod did not sense any heat or ignition.

If you have turned off the heater and the message again pops up, it could be because of following things:
Flame rod couldd be bad
Could be possibilities of carbon being stuck.
A dirty burner or losse wire due to which the flame is not getting on burner quickly.

Overall you need to check for debris.

In addition please find additional information:

http://www.rinnai.us/documentation/downloads/Error_Codes-Tankless_Water_Heaters.pdf

Mar 22, 2010 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

I turned on my heater and 12 came up what does


An error code of 12 indicates that the front flame rod did not sense an ignition (heat). Turn the unit off and then on and see if the code reappears. Your flame rod could be bad, have carbon stuck on it, a loose wire or not getting flame to it quick enough because of a dirty burner. If your unit fires up with out an error code, I would suggest getting a good technician familiar with Rinnai in to clean it. For safety reasons, check to make sure the vent is free of obstruction or debris.

Nov 06, 2009 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

Rinnai 403 FT


who did you talk to at rennnai?
let me know i deal with them on a buisness leval.

Mar 27, 2008 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

Error code "n"


You might try poking through here:

http://www.webbersupply.com/Webberpdf/reference_161_182.pdf

Dec 02, 2007 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

Code 12 on my water heater


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,

Jul 14, 2007 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

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