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Code 12 on Rinnai Timberflame Gas Fire - what does it mean?

Hi. I have a Rinnai Timberflame Centrum gas fire. It is constantly cutting out with the number 12 flashing in the screen. I can not find my manual nor can I find one online. Could you please tell me what code 12 means and if possible where I can get a manual online. Many thanks, Tracy

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kdgrayson
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SOURCE: Rinnai Flame Fire Royale 2005

pilot generator

Posted on Aug 23, 2009

  • 4 Answers

SOURCE: rinnai natural gas log fire heater

12 is a fault code, look in the book if you have if, i think 12 is no or low gas pressure, cheers

Posted on Feb 05, 2009

  • 120 Answers

SOURCE: my rinnai gas log fire

Fault code 12 means the flame lit ok but hen for some reason went out. In my experience this usually means a fault on the gas supply itself. If you are on lpg I have had many problems with gas regulators recently. If you have something else on gas like a cooktop, fire that up first, then try the log fire. If this seems to fix the fault get a gas fitter to change the regulator.

Make sure all taps and isolattion valves are fully on.

I'm have assumed this is not a new installation so the unit has worked ok before.

Does the flame stay strong after it lights. If it slowly fades then definately a gas supply problem.
If it stays strong but just shuts of with a click, then possibly a fault on the heater, check the rod the flame heats is well in the flame. Could be the electronic otherwise but very rare.
If the flame goes yellow like a candle and then shuts off you will need to check the flue or chimmney as this might be blocked..

Cheers, let me know if anything works and re-post with any more info if you are still stuck, I will keep a look out for you.

Posted on Aug 09, 2010

  • 1 Answer

SOURCE: Hi I have a rinnai flame fire royal model ib35etr

I had this same problem last year and went through all the checklist in poshpoms suggestions ( I am on mains Gas ). The issue was caused by the Flame rods. Near the 2 pilots at the front and the back. Those small rods each that 'senses' the flame become inadequate, so they were replaced with a new pilot assembly from Rinnai that had longer rods and better coverage. Issue was fixed. Good Luck.

Posted on Sep 09, 2010

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Hi there I am trying to help a friend who has a slightly older version of the Rinnai Timberflame Centrum and he was cleaning the controls on top of the heater and in doing so has pressed one of the...


Sue, have you friend turn the Master ON/OFF Switch to OFF and unplug the heater from the electrical outlet. Wait 15 - 20 minutes and plug the heater back in. Turn the Master ON/OFF Switch to ON and the heaters electronics should revert back to the original factory settings. From there he can reset it to the settings he had, before the little mishap.

Hope this helps solve the problem. Please let me know. Thanks.

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OUr Rinnai gas heater convector 516tr keeps on turning itself off and flashes 12 on the light panel. What does that mean and how to fix it? tks


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12 flashes means "Incomplete combustion". The code is prompted when the flame turns off because of a problem.

Check filter, check gas pressure and thermocoupling. Those are the problem that commonly trigger the code 12 error.

Here a manual.

Here Fixya thread on the problem.

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Hi I have a rinnai flame fire royal model ib35etr It keeps going out and flashes number 12 on the screen we are moving and packed the book


I had this same problem last year and went through all the checklist in poshpoms suggestions ( I am on mains Gas ). The issue was caused by the Flame rods. Near the 2 pilots at the front and the back. Those small rods each that 'senses' the flame become inadequate, so they were replaced with a new pilot assembly from Rinnai that had longer rods and better coverage. Issue was fixed. Good Luck.

Aug 23, 2010 | Heating & Cooling

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My rinnai gas log fire cuts out after 8-10 seconds when turned on,& the number 12 flashes on the displey


Fault code 12 means the flame lit ok but hen for some reason went out. In my experience this usually means a fault on the gas supply itself. If you are on lpg I have had many problems with gas regulators recently. If you have something else on gas like a cooktop, fire that up first, then try the log fire. If this seems to fix the fault get a gas fitter to change the regulator.

Make sure all taps and isolattion valves are fully on.

I'm have assumed this is not a new installation so the unit has worked ok before.

Does the flame stay strong after it lights. If it slowly fades then definately a gas supply problem.
If it stays strong but just shuts of with a click, then possibly a fault on the heater, check the rod the flame heats is well in the flame. Could be the electronic otherwise but very rare.
If the flame goes yellow like a candle and then shuts off you will need to check the flue or chimmney as this might be blocked..

Cheers, let me know if anything works and re-post with any more info if you are still stuck, I will keep a look out for you.

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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.

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Rinnai 556 ftr keeps flashing code 12


Hi

Thanks for using FixYa. Error code 12 on a rinnai 556ftr means Flame failure. Check gas is turned ON.
Also see this error manual.

Please refer to this user manual for more details --

Rinnai 556ftr User manual

Please do rate the solution & revert for further assistance.

Thanks
Rylee

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Rinnai tankless water heater code 12


12 - Flame Failure or Poor Ground

1. Immediate code 12 is usually a defective gas valve, power supply problem, or defective fan motor wiring harness.

2. If code 12 occurs after a few seconds it indicates that proper operation was established, but then stopped unexpectedly.

3. Verify that fuel is being supplied to the unit.

4. Check for proper electrical ground. Unit must use a grounded power supply.

5. Check for flue blockage on inlet or exhaust.

http://www.foreverhotwater.com/service-codes.php

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12 is a fault code, look in the book if you have if, i think 12 is no or low gas pressure, cheers

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I am thinking that the retailer is not up to scratch with gas regulations and gas heater designs and standards
IT might be better if you talk with an accredited gas fitter and clarify what the regulations and standards are applicable to installing gas heaters in homes
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