20 Most Recent
Questions & Answers
Working on a N1321-ASME unit
I recently had a similar problem with my N-132M-ASME heater. The unit would come on, then shut down and flash Error Code 21. According to the owners manual, that code indicates the unit is not getting enough air. I tried vacuuming the unit, blowing it our with air and checking to be sure the exhaust lines were clear. Nothing helped. A service technician came out and recommended I descale the unit and clean the burner. I did this but the problem did not go away. He also suggested I replace the Burner Sensor. It's not an expensive part, around $20. I ordered the part and have not had a problem since I installed it. Hope this helps.
on Mar 04, 2015
My noritz water heater: error code: 11. It is an N-0931m. Thanks
Code 11 is ignition failure.
Ensure that your gas is turned on.
Start by checking the vent system to ensure there is no obstruction or separation in the vent system.
Second I would recommend flushing the water heater with vinegar or Rectorseal Calci-Free. Calcium and scale build up in tankless water heaters can cause several failures that are not directly related to the specific code displayed on the heater.
If the problem persist I would look for a plumber that is familiar with tankless water heaters.
on Mar 02, 2019
NORITZ CB BOILER BURNER NOISE
You should try to describe the noise and what is happening when the noise occurs. Then someone may be able to give you some diagnosis of the problem. For example, does it make a big boom sound went it lights the burners? Then you might need to clean and adjust the pilot light.
on Dec 25, 2018
Not finding what you are looking for?