Hello everyone, This is my first post also.
I have Noritz model N-069M. The tankless heater has worked well for a few years but recently it starts right up as it should but after a couple of minutes the water begins to get cooler, then cold. After turning the water off completely and restarting, the water will be warm for a while, then get cold again.
The remote panel shows no faults and I have cleaned the filter.
Any comments will be welcome.