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1sxx02cw
Fault
code
Description
4
5 V power supply too low.
The unregulated power supply voltage is too low: the smoothing capacitors cannot
keep the voltage up enough for the processor to continue to operate. The processor
stops all normal activities, expecting to be shut down.
Action: Turn off the mains power supply to reset the unit. If the fault persists, check
the power supply to circuit board CB0.
5
Chopper’s module rectifier DC voltage to low.The DC voltage on rectifier to low -- to
weak power supply (high inductance of the supply).
Action: See also pre--charging circuit.
6
High temperature
Thermal overload cutout B1 or B2. The power source is stopped, and cannot be
restarted until the cutout has reset.
Possible causes: Overloading, fan not working properly, cooling air inlets or outlets
blocked or obstructed or dirt on the heat exchanger.
8
+15 V power supply on circuit board CB0
The voltage is too high or too low: it must be within the range 14.1 -- 15.9 V. This
fault does not disable any functions.
9
--15 V power supply on circuit board CB0.
The voltage is too high or too low: it must be within the range 14.2 -- 16.4 V. This
fault does not disable any functions.
10
+24 V power supply on circuit board CB0.
The voltage is too high or too low: it must be within the range 22.1 -- 26.0 V.
12
Communication error (warning)
The load on the system CAN bus is temporarily too high, or there is electric noise on
the bus.
Action: Check the equipment to ensure that only one wire feed unit and/or remote
control unit are connected. See also section CB0 ’The CAN bus’.
15
Lost messages
The bus CAN controller indicates that a message has been lost. No functions are
disabled by this fault.
Action: Check that all units are correct connected to the CAN bus. See also section
CB0 ’The CAN bus’.
16
High open--circuit voltage
The open--circuit voltage has exceeded 113 V for more than one second. The power
source is turned off and cannot be restarted. Turn off the mains power supply to
reset the unit.
Action: Turn off the mains power supply to reset the unit.
22
Transmitter buffer overflow
The control board is unable to transmit information to the other units at a sufficiently
high speed.
Action: A break in the bus line can cause this fault. Check the CAN cabling. Turn off
themains power supply to reset the unit.
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