Anyone had a Water Error 1 on the red laser. Not sure what to do.
Sounds like your flow sensor is jammed. At least that is what I could find out searching with google. 
Not sure about it though, but I would trace out the plumbing of the water lines, look for the sensor, and take it out and check that air can blow through in at least one direction. Hope this helps.
About the only water error you might have would be lack of flow, unless there’s a low level float in the tank.
Pet peeve #82 - Error codes that mean NOTHING.
Thanks guys