Matthew Nistico wrote:
So how were you able to overcome the minimum flow cut-off built into your heater?
This works right into my next post, because apparently this is why it was shutting off....
I still like Stiebel Eltron water heaters.
Installed the brand new flow sensor in my 20 year old water heater, turned on 2 zones and it ran flawlessly all day.
Once the 2nd zone shut off, after a while - the water heater stopped heating !
Time to do some troubleshooting...
Now, i knew the flow sensor was bad, when i tapped the old one with a screwdriver and it came on - thats fixed...
Works fine with 2 or more zones - so it does work...
Must be the flow.
Read the 20 year old - paper - owners manual, and found that there is a fine water filter at the base of the cold water inlet.
Opened that up, pulled the filter and of course since its 20 years old, it was half clogged with stuff.
It now has more flow ( built in flow meter on manifold ) with only 1 zone running, and the circulating pump is running a bit cooler now too...