Originally Posted by Rcping
We just bought the 2018 North Point 377RLBH. When we go to take showers the little shower head on display shows up and then the flame comes on and water will reach the temperature. But about 2 minutes in to the shower it will go cold again and then back to hot and then cold again. What am I doing wrong?
Thanks for any help!
Sounds like you have a Girard Gen 3 (GSHW-2) tankless heater. If so, we have the previous model and like someone said earlier it's sensitive to water flow and pressure.
If the heater thinks the flow is too slow, too low, it will cut the flame off. That could be the source of the hot/cold/hot/cold.
One thing that works for us is to only use the fresh tank when we're someplace with low pressure. Most campgrounds are fine for us, but there's one where all I do is use the campground water to fill the Fresh tank and then pump our showers from the tank.
If you haven't tried that, it might be worth a shot.