Husqvarna 967187001 Workshop Manual page 96

Description of electrical system
The single-action power relay is now activated,
which in turn powers the drive motor via the thick
red lead. This lead has a 150 A fuse before the
power relay. To protect the drive motor electronics,
there is a diode mounted between the 150 A and
80 A fuses as illustrated.
Without this diode or if it is damaged, the motor
electronics can be destroyed.
Power on the red lead will be cut to the key after
turning the key to 0 and the switching relay is then
released and the brake resistance is engaged
with the motor via the relay and a 30 A fuse. As
the single-action relay is interlocked by the switch-
ing power relay, it will also release and the power
to CCU and power to the drive motor electronics
disappears. The brake resistance is engaged to
brake the drive motor when the machine is not
activated with the key, which means the resistance
is engage after turning the key in position 0. The
machine can start to move if it is not secured with
the P-brake as this resistance has a low braking
effect. When the key is 1 and the engine is activat-
ed, the motor will be braked internally if the analog
control signal is low.
96
English –
Fault message via warning triangle on control
panel
The red warning triangle comes on and indicates
four faults.
1. Blade motor 1 sends a fault signal.
2. Load too high on cutting deck.
3. Drive motor sends fault signal.
4. The cutting deck is lowered when turning
the key.
5. Voltage too low.
Connector A at CCU
A1:LIFT_SW
A2:START_SW
A3:ECO_SW
A4:CHARGER_IN
A5:START_LED
A6:ERROR_LED
A7:BATTERY100%_LED
A8:BATTERY75%_LED
A9:BATTERY50%_LED
A10:BATTERY25%_LED
A11:BATTERY_LOW_LED
A12:ECO_LED