HESCH HE 5731 Compact - Page 39

HE 5731 Operating instructions
39
# 373344, Version 1.5
Error messages
Display
Cause
Action
The LED flashes.
The display shows the
relevant valve
The permissible valve current
of 1 A has been exceeded
 Check the indicate valve
for short-circuit
 Check the valve in
question
 Check if the valve plug
is connected correctly.
Display is dark or lights
up briefly and goes out
again immediately
The internal fuse triggers (Af-
ter a recovery time of a few
minutes, the controller can
be switched on again)
 Switch off the operating
unit
 Check whether the am-
bient temperature is
above the permissible
 Check current consump-
tion of solenoid valves
 Observe restrictions.
The segment display
flashes. In the first field
a „d“ is indicated
The pressure switch (as an
option) indicates a misfunc-
tion at the displayed valve or
at the pressure switch itself.
 Check valve / pressure
switch
Red LED is lit on the
valve extension
A wrong knot number has
been set.
 Check set knot number
and adjust if necessary