I have an older Noritz N-069M tankless water heater without a "remote control" or display. I think I am not using enough hot water to consistently keep the heater running while showering (water goes completely cold for a minute–never happens to my wife, who takes hotter showers). According to the installation manual online, the only way to adjust the set temperature is by temporarily plugging in a remote control.
Are there any other options? The only visible adjustments are for the gas manifold pressure. A similar model apparently has removable jumper connectors, but this one does not.
Best Answer
If you cant find a remote try turning on the hot water in the sink to add additional hot water demand, This will waste some water but may not take much to keep you from getting the cold surprise.