spreve
New Member
I have a Tagaki tankless hot water heater and I'm hoping you guys can help me track down an issue. The basic issue is that the hot wate heater does not always turn on when the circulating pumps turn. I've cleaned the filter on the cold water line and disassembled the unit to look for impeedments on the flow switch and cannot find anything. The only way I can get the unit to activate when it does this is to close the shut off on the cold water line just before unit for a quick second then open it back up. When I do this the unit fires right up. At first I thought maybe I was getting a back flow issue and the pumps may be stealing water from the other circuts but that does not seem to be the case. I can turn off the shutoffs on all the other lines and it still will not turn on. Im at a loss here and was hoping you could give me some advice.