Wacker Neuson FUE Series, Operator'S Manual

Page: 33 / 48

Troubleshooting
33
11.2 FUE 6
A control lamp makes troubleshooting easier.
Malfunction Cause Remedy
Inverter in operation.
Control lamp lights red and
green.
„
Excessive current consump-
tion of connected machines.
„
Inverter operates within the
permissible overload range.
Reduce the current consump-
tion of the connected machines.
Inverter not in operation.
Control lamp lights red.
„
Line voltage interrupted.
„
Incorrect line voltage.
Inverter starts automatically as
soon as the correct line voltage
is available (again).
Inverter not in operation.
Control lamp flashes red.
„
Short circuit in one of the
connected machines.
„
2-phase operation* in one of
the connected machines.
„
Mechanical defect in one of
the connected machines.
* 2-phase operation: The connected machine only uses 2 phases for current intake. Therefore, the en-
gine does not turn. The connected machine hums and heats up quickly due to the high current con-
sumption.
1. Carry out a reset:
Switch off the inverter and
switch it on again.
2. Disconnect the connected
machines and check them.
3. Repeat reset.
Short circuit in inverter. 1. Disconnect connected ma-
chines.
2. Carry out a reset:
Switch off the inverter and
switch it on again.
3. If the fault is not remedied,
have the machine repaired.
**
** Have these tasks carried out by the service department of your Wacker Neuson contact person.
Inverter not in operation.
Control lamp flashes red twice. Inverter has switched off due to
excess temperature (> 85 °C). 1. Allow the inverter to cool
down. Leave the inverter
switched on to allow the ven-
tilator to keep running.
2. Carry out a reset:
Switch off the inverter and
switch it on again.
Reduce the current consump-
tion of the connected machines.
Thumbwheel jammed. Thumbwheel dirty. Remove dirt.
Air cannot escape from the ven-
tilation slots.
„
Ventilator turns too slowly.
„
Ventilator does not turn.
Have the ventilator repaired. **