Plumbing in the Home/tankless water heater problem
my 6 year old bosch tankless water heater sporadically stops heating.
i'll be taking a shower and all of a sudden, after a couple minutes, the water turns cold. i have to turn off then turn back on the hot water to make the hot come back on.
don't know why. any ideas?
Bosch model 425HN
thanks in advance
I sounds like a flow switch problem. Water must be flowing to function otherwise it would burn out. The switch may be going bad or the copper tube heat exchanger is partially plugged and needs to be delimed. Find your manual for directions or call the installer. Have the switch checked. Replace it it's not repairable. Deliming is a little coplicated and should be done professionally.