Mennekes ACU Instructions D'installation page 70

Error diagnosis category B
Error code Description / notes on rectifying
errors
B 2 Invalid value on PP.
 No valid resistance value detected for
the encoding of the charging cable's
current-carrying capacity.
1. Use a suitable, intact charging cable.
B 3 No communication between SCU and
ACU.
 Configuration error between ACU
and SCU.
1. Add the SCU again (see chapter
"Setting up SCUs" on page 9).
2. Check the configuration of the SCU.
B 4 Vehicle status undefined.
 Charging cable defective.
 Fault in vehicle.
 Non-compliance with required
standard voltage levels for
unambiguous communication
between vehicle and charging
system
1. Check the charging cable.
2. Have the vehicle checked by your car
dealer.
B 5 Short-circuit of CP line to earth.
 The charging cable experiences a
short-circuit to earth on the CP line.
1. Check the charging cable.
B 6 Boot loader error.
 Error in the programme sequence.
Restart the charging system.
 Boot loader defective.
1. Replace the SCU.
B 7
Update error.
 Incomplete update.
1. Update the software of the SCU
again. If necessary, contact the
MENNEKES support.
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Error code Description / notes on rectifying
errors
B 9 System monitoring indicates faulty
operating state:
Anticlockwise rotating field (LEDs flash in
reverse order)
 Phases are swapped.
1. Check the connection to the power
supply.
2. Correct the confused connections.
Phase failure (one or several LEDs are
off).
 Failure in the corresponding phase.
1. Check the phase according to the
circuit diagram.
2. Check that RCD and MCB are
switched on.
3. Check the supply cable.
Low voltage (one or several LEDs are
flashing)
 Voltage of corresponding phase too
low. If all LEDs are flashing, the
neutral conductor is probably
missing.
1. Check the power supply.
2. Connect the neutral conductor.
B 11 Ventilation requirements not
satisfied.
 The ventilation of the charging
environment required by the vehicle
does not exist at this charging point.
1. Select another charging point.
B 12 Software version.
 The software of the SCU is outdated.
1. Update the software of the SCU. If
necessary, contact the MENNEKES
support.