I have a Bosch AquaStar AQ-125-BNG tankless water heater.
It has worked very well until recently.
The problem: The hot water at the tap is turned off, the flame on the main burner keeps burning and eventually overheats and completely shuts off including the pilot light.
Any ideas?
Tags: AQ125BNG, Aquastar, Bosch, heater, Tankless, Water