Maintenance; Error Messages - Husqvarna PP 455 E Manuel D'utilisation

Error messages

Nine different error messages can be shown on the display:
• NOTE! LOW VOLTAGE (1A) CHECK THE VOLTAGE
SUPPLY AND THE CABLE TO THE HYDRAULIC UNIT
• LOW VOLTAGE PHASE X (1B) LOW POWER 32A
• MOTOR PROTECTION TRIPPED (2)
• MOTOR OVERHEATED (3) COOLING IN PROGRESS.
DO NOT SWITCH OFF THE ELECTRIC MOTOR
• OIL TEMP. HIGH (4) CHECK THE WATER TO THE
HYDRAULIC UNIT
• PRESSURE SENSOR OUT OF (5) ORDER
• HIGH HYDR PRESSURE (6) CHECK UNIT
• NO CONTACT CHECK THE CAN CABLE (7)
• NO RADIO CONTACT (8)
Error message (1A)
IMPORTANT! Low voltage Check the voltage supply and
the cable to the hydraulic unit.
Too low voltage, caused by:
• Long mains cable.
• Too small core size (cross-section) on the mains cable.
One or more phases down, caused by:
• A fuse has blown in the distribution box.
• Cable breakage.
• No voltage to one or more phases in the distribution box.
Action (1A)
Press OK to acknowledge the error message.
The hydraulic unit will match the maximum power output to 32
A.
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.

MAINTENANCE

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)
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.
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English