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Rinnai Infinity instant hot water system. Worked foe 24 hrs then error code 12. (nil gas ??) how do I fix this or is it improper installation and should I get installer back

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  • Anonymous Mar 13, 2014

    no hot water no switch

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  • Expert
  • 330 Answers

Call the installer back

Posted on Jul 03, 2008

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Why is my Rinnai Infinity 20 leaking?


Hole in heat exchanger caused by improper condensate drain?
Read installation manual, call service technician.
http://waterheatertimer.org/pdf/Rinnai-Tankless-Troubleshooting-Manual-2012.pdf

Replace with tank type heater.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Gene

Oct 01, 2014 | Rinnai Water Heaters

1 Answer

Our Rinnai Infinity HWS is displaying error message 12 and no hot water is available


Hi,

The following could cause this. I would call a licensed plumber to fix this issue.

Check that the gas is turned on at the water heater and gas meter. Check for obstructions in

the flue outlet.

Ensure gas line, meter, and/or regulator is sized properly.

Ensure gas type and pressure is correct.

Bleed all air from gas lines.

Ensure proper Rinnai venting material was installed.

Ensure condensation collar was installed properly.

Ensure vent length is within limits.

Verify dip switches are set properly.

Ensure appliance is properly grounded.

Disconnect keypad.

Disconnect EZConnect™ or MSA controls to isolate the problem.

Check power supply for loose connections.

Check power supply for proper voltage and voltage drops.

Ensure flame rod wire is connected.

Check flame rod for carbon build-up.

Disconnect and reconnect all wiring harnesses on unit and PC board.

Check for DC shorts at components.

Check gas solenoid valves for open or short circuits.

Remove burner plate and inspect burner surface for condensation or debris.


The above is what #12 indicates.


No way to fix it without further hands on investigation. I seriously recommend you call a licensed plumber.


Let me know,if needed further assistance.


Hope i helped you.


Thanks for using ' Fixya ' and have a nice day!!

Jul 13, 2011 | Heating & Cooling

2 Answers

We have an rinnia infinity 26 instant gas hot water system which has just recently installed (2months ago). It started working fine but started to produce hot water for five minutes until today it has...


This is operated by a flow switch, when you open a hot water faucet it turns on. There is a small filter in the cold water inlet on the Rinnai located just below the cabinet on the cold water line. It will unscrew and you can clean it out after you shut off the water to the unit. Make sure there is flow through the cold water line and out the hot water line. If that gets you nowhere, you will need to connect an MC control to the unit to get the error codes. Make sure you have flow through the unit and the gas is turned on to it. You will be able to hear it trying to start as an assistant turns on the hot water while you are in front of the unit and cover off. Look through the small viewing port for any spark or flame and see if it stays on or quickly goes out. You can remove the ingiter flame rod assembly and clean off any debris stuck to it with a soft brush. Not much you can do to it. It's like a newer car, you will need a technician with proper tools and experience with these units to be able to repair it. Your installer should cover this under their warranty and any parts needed will be under Rinnai warranty.

Feb 18, 2011 | Heating & Cooling

1 Answer

Rinnai Infinity 26 hot water system set to 55 degrees with remote temp adjuster. Water only luke warm for showers. Burnner working, water & gas pressure ok. Any thoughts ... Stephen


If you aren't getting any error codes, then the heater is probably doing its job. Your problem is probably somewhere in your plumbing system. The most common reason you get this sort of problem is due to cold water mixing in the hot water system. There are a number of causes for a "cross connection" :

-Faulty check valve
-Missing check valve on reciculation return line
-Faulty shower cartridge
-Thermostatic mixing valve set too low
-Faulty thermostatic mixing valve
-Faulty anti-scald valve

The easiest way to confirm a cross connection is to: 1) shutoff the cold water entering the tankless heater 2) open hot water valves around the house. If you still have water flowing at your hot water fixtures, then you have a cross connection.

Jul 09, 2010 | Rinnai Digital Remote Water Heater Control...

1 Answer

We have Rinnai 18 instant hot water service. We have no hot water. Pilot light appears to have gone out. When I turn on hot water tap the temperature on key pad flashes at 19 degrees instead of 55


We have the same problem! It's happened twice this week after heavy rain. There is no error code "19"listed in the manual. Ours is a Rinnai Infinity 24 hot water service. I called Rinnai and they had no idea and were going to send a serviceman when it suddenly righted itself. Now it's recurred. Wife and daughters furious. Please help!

Jun 11, 2010 | Heating & Cooling

1 Answer

Can't get hot water heater to work - Rinnai Infinity 18


If you can get to the gas valve make sure it is in the on position and not in pilot or off. Does it sound like
a spark ignition system? Even though you say the gas valve is on, by code thered should be a gas shutoff valve located within site of the unit. Follow the
gas pipe until you find such a valve and make sure its on

Feb 07, 2010 | Rinnai Vent Free Gas Heater/

1 Answer

Hi i have a Rinnai Infinity hot water system and i haven't got hot water and its leaking water from the system what do i need to do or who do i ring


I would contact your gas company first and ask if they are trained in Rinnai repair. I would also contact Rinnai (USA) at 800-621-9419 and ask them if they have an service agent in your area.

Jan 27, 2010 | Rinnai Heating & Cooling

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

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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