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I have a Rinnai 329 heater and I'm getting an error code 12. It ignites for a few seconds and then turns off. The gas valve is on so I thinks it may be a dirty ignition switch. I have read that you can try to take out and clean the switch I just need to know how.

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Here is a link to Rinnai, where you can search for Owners Manuals by the Model #

http://www.rinnai.us/customer-support/manuals-literature/

Hope this helps. Please let me know.

Posted on Mar 13, 2011

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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

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...

2 Answers

I have a Rinnai tankless gas water heater and this things beeping and flashing 12 everytime we turn on the hot water the water will get hot but you have to wait for it to stop beeping


Error 12 is failed ignition - this can be caused by many things, but normally a low gas pressure, or no gas pressure upon ignition.
Try turning the hot tap on very slowly till till the control shows burner is lit. Then turn it on faster. If it stays going with no error, you might have a faulty regulator, not opening fast enough to meet demand. Especially common with lpg models,a lot rarer on natural gas.

Oct 27, 2009 | Rinnai Water Heaters

1 Answer

This things beeping and flashing 12 everytime we


check the error codes on it by pressing the on off button for 2 seconds then while holding the on/off button press the up button this should display the last 9 error codes let me know what they are

Jul 28, 2009 | Rinnai Water Heaters

2 Answers

Rinnai 560PTR Heater Converted Propane To Natural Gas No Ingition


I think you will find the thermocouple or thermostat has gone this allows the gas valve to open and is a saftey device to stop the escape of dangerous fumes .. it looks like a long piece of thin copper wire approx 4mm thick and it extends from the main valve into the pilot light flame .. When the ignition is pushed and you hold your finger on it for a while this tells the the valve that the pilot light is lit .. conduction of heat along this pipe then opperates the diaphram in the valve allowing the gas to the burners the pilot light then ignites them .. if the pilot light goes out the unit will nort run ..
My advice to you is that even though you may be conversant with the heater .. they do tend to have all manner of faults occur when left in storage or if shipped ( jostling and bumping ) is to get a trained gas engineer to check it out it may cost a bit .. but a gas escape and the following reprocussions are far more exspensive and costly .. Also You may not be aware that if you do have an incident your house ,insurance may be null and void if no service documents can be raised for the correct servicing of a fixed or mobile gas Convector .. I hope this helps Regards Vortash

May 22, 2009 | Heating & Cooling

1 Answer

Rinnai heater flashes code 12


Bailey,

Next time you try your stove watch the flame. If the flame goes away and then the error code comes on, you have something wrong with the over temp circuit, gas or gas valve, If the code comes on and then the flame goes away you have a flame sensor problem.

Good luck,

Tom Hawkins
hawkins111@gci.net

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4 Answers

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

Dec 31, 2008 | Rinnai Webstone The isolator EXP tankless...

1 Answer

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

Oct 06, 2008 | Rinnai Desa Vent-Free Infrared Gas Heater:...

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