17
Possible installation faults
(only if 2 electrode rods are connected)
Status and indication
Error
Remedy
No function.
MIN and MAX LEDs are flashing
simultaneously.
MIN 1 electrode rod is longer
than MIN 2 electrode rod.
Check and change the electrical connection of
the level electrode.
Commissioning
- continued -
Checking switchpoint and function
- continued -
Possible installation faults
Status and indication
Error
Remedy
Water level below MIN 1/ MIN 2
switchpoint, MIN 1/ MIN 2 LED
are illuminated green.
Electrode rods are too long.
Cut electrode rods to the length required for the
MIN 1 / MIN 2 switchpoint or
Electrode rod is too long.
Cut electrode rod to the length required for MIN
switchpoint.
If installed inside the boiler: Up-
per vent hole in protection tube
does not exist or is obstructed.
Check installation of level electrode. Make sure
that the level in the protection tube corresponds
to the actual water level.
Water level between MIN and
MAX. MIN 1 / MIN 2 LEDs are
illuminated red.
Electrode rods are too short.
Replace level electrode and cut electrode
rod(s) to the length dictated by MIN 1 / MIN 2
switchpoint.
Electrode rod is too short.
Replace level electrode and cut electrode rod to
the length dictated by MIN switchpoint.
The earth connection to the
vessel is interrupted.
Clean seating surfaces and screw in level elec-
trode with metallic joint ring. Do not insulate
the electrode with hemp or PTFE tape!
Electrical conductivity of the
boiler water too low.
Change response sensitivity to 0.5 μS/cm
Upper vent hole flooded.
Check installation of level electrode. Make sure
that the level in the protection tube corresponds
to the actual water level.
