Husqvarna RC 455 Bedienungsanweisung Seite 23

Operator's Manual RC 455
Error message (1B)
"Low voltage Phase x low output. 32 A", where x
represents phase 1, 2 or 3.
Action (1B)
Press OK to acknowledge the message. It states on the
display that the maximum power output is set to 32 A. If
the voltage is still low, the electric motor is turned off and
the low voltage error message is shown.
By pressing OK, the unit returns to the maximum power
you selected at start up. To switch between 63 A and 32 A,
the unit must be turned off and then on again.
Read the supply voltage on the operations menu "Phase
1, Phase 2, Phase 3". If the voltage, before the motor is
started, is:
Below 340 V, check that none of the cores in the cable are
broken and that there is voltage up to distribution box.
Above 340 V, check the cable's core dimensions and
length.
Error message (2)
"Motor protection tripped".
Cause (2):
The electric motor has been overload or a phase is down.
This is why the motor cut-out, which is there to protect the
electric motor, has tripped.
Action (2):
Press OK to acknowledge the error message. Check that
there is voltage to the hydraulic unit on all three phases.
Read the supply voltage on the operations menu "Phase
1, Phase 2, Phase 3".
If the voltage to one phase is down: Check the mains
cable and the voltage to the distribution box. Motor
protection is reset automatically within three minutes.
If the voltage to all phases is higher than 340 V: Wait for
the motor cut-out to reset. Now restart the hydraulic unit.
If the motor cut-out trips frequently you should call the
service personnel.
Error message (3)
"Motor overheated cooling in progress. Do not turn off the
electric motor!"
NOTE!
Do not turn off the motor, as this can damaged
it. When the motor has cooled it is turned off
automatically.
Cause (3)
The motor temperature sensor is too high.
Action (3)
Press OK to acknowledge the error message.
If after all it is necessary to turn off the engine, the error
message must still be acknowledged by first pressing OK.
The display shows: COOLING. The hydraulic valves for
blade and trolley motion are turned off. The blade motion
can also be restarted.
When the motor temperature sensor drops below the limit
level the display shows: MOTOR COOLED PRESS OK.
If the motor frequently overheats you should call the
service personnel.
Error message (4)
"Oil temp. high Check water to the hydraulic unit"
Cause (4)
Failure to cool the hydraulic oil.
Action (4)
When the error message is shown, the electric motor is
turned off. Press OK to acknowledge the error message.
Check that the water coolant is connected to the hydraulic
unit and that the water runs to the blade when you turn the
knob for blade rotation.
Error message (5)
"Pressure sensor not working"
Cause (5)
The pressure sensor for measuring the hydraulic pressure
to the blade rotation is not working.
Action (5)
Press OK to acknowledge the error message. If the error
message is shown repeatedly, replace the pressure
sensor.
Error message (6)
"High hydr pressure check unit"
Cause (6)
The blade has jammed, which causes a high hydraulic
pressure
Action (6)
Press OK to acknowledge the error message. If the error
message is shown frequently, you should call the service
personnel.
Menu functions
English - 23