Maintenance Manual KHS HS2
8
Check backflow sensor
1
Remove the cover plate.
2
Release the control unit and pull it
forwards.
3
Pull out the control unit.
4
Short-circuit the two metal brackets on
the rear side of the control unit using a
conducting object.
Result
The buzzer sounds to indicate a
backflow.
5
Use the <Test> button to suppress the
buzzer. Reset the "Backflow" error
message with the KEMPER HS2 app in
the <Messages> menu.
6
Check backflow sensor for limescale
formation. If necessary clean with
descaling agent.
7
Insert the control unit in the holder.
9
Replace the cover plate.
The surface of the metal bracket
is gold plated.
Do not clean with abrasive tools
or tools that will scratch.
EN
8
Push back the control unit till it clicks
audibly into plac e.
