Hi there. This is probably not your usual Rinnai code 12 post.... I have a Rinnai V75IP propane tankless hot water heater that I bought new 3 1/2 months ago, in June. I hired a plumber/electrician to install …

Hi, I have a Rinnai water heater (RUC80i) that worked fine for 5 years but trouble started right after the 5-year mark. It is 5 years and 6 months old now.

Rinnai also sent over a new burner because they figured they would have been compromised from incorrect installation. So now we have a new gas line, new flu, new exhaust tank, and new burners.

The installer increased the line sizes, checked all the regulators, and I personally checked the pressure coming into the unit and get a solid 12.69 inches of water column, which in the required range of 10 …

I have a Rinnai tankless water heater that is about 3.5 years old. It's recently started intermittently throwing a code 12.

Error code 12 on a Rinnai gas heater indicates ignition failure. Check the igniter for cracks or damage and ensure the flame sensor is clean and properly aligned.

Both of her yourself because the code 12 is one of those things that can be caused by tons of different issues! As well as the link I will send you Rinnai technical support number.

The 2 Rinnai R94LSi LPG water heaters that are 6 years old. I just purchased the house in January so I have no previous history on how long this problem has been an issue.

Sep 25, 2015 · Author Topic: Rinnai Convector Gas Heater - Code 12 (Read 16771 times) 0 Members and 2 Guests are viewing this topic.

Rinnai RHFEFA-P errors out w/ 11 or 12 code. Most often when the flash water heater runs, but not always. Flash water