We also have a N-069M We also got our tankless water heater in the 2006/2007 time frame. The water heating experience has been great up to now.
Failure of a part with no electronics and no moving parts?
Dec 27, 2010
Noritz leak solution by: Anonymous
If the leak is in the heater exchange unit, then the heater exchange unit needs to be replaced. The pin hole is not common however, Noritz recommends that the heater exchange be flushed out once a year.
Noritz has a warranty on the heater exchange, however the owner needs to pay for the installation.