Husqvarna PP 455 E Manuel D'utilisation page 19

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. The motor protection is
reset automatically within three minutes.
If the voltage to all phases is higher than 340V: 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!"
IMPORTANT! Do not turn off the motor, as this can
damaged it. When the motor has cooled it is turned off
automatically.
Cause (3)
High motor temperature detected
MAINTENANCE
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.
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