Troubleshooting
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BA_
T
D3
-A
M
0
0
1
e
n
_
0
1
4
_
M
X
A
.d
o
cx
9.2
Other malfunctions
Troubleshooting
Explanation/Cause of
error
Troubleshooting
No indication, motor does
not rotate any longer
System fuse blown
Replace the T2A fuse (micro-
fuse, nominal value 2A,
characteristic “slow-blow”).
(For position of the fuse refer
to chapter 4.4.5
– „Wiring
diagram of control unit“)
Green lamp above
terminal 20 lights up dimly
or not at all
Wiring error
(terminals
10…21)
Contact the specialist installer
or Grünbeck's technical
service.
Connected component
defective (terminals 10...21)
Motor does not rotate or is
buzzing only
Wiring error (terminals
10…21 in the RS-tronic or
connecting terminals at the
motor’s mounting plate)
Check the wiring according to
the wiring diagram.
Motor or control unit
defective
Contact the specialist installer
or Grünbeck's technical
service.
Differential pressure too
high
The filter elements are dirty
Carry out a backwash.
The shut-off valves are not
completely open
Completely open the shut-off
valves.
Cannot be determined
Contact the specialist installer
or Grünbeck's technical
service.
Despite several backwash
processes, the differential
pressure does not
decrease
The filter elements are
severely contaminated,
clogged
Check the filter elements.
Manually clean the filter
elements with a brush.
Replace the filter elements.
