
21
Fault: The weighing unit does not come on when the power is switched on.
Cause: the indicator’s operating temperature range is -30 to +50°C.
- Check that the temperature is not outside the operating limits.
Cause: the indicator’s operating voltage is 12 Volts (maximum 17 Volts). It is protected by a 15A fuse.
- Check that the +/- polarity is correct.
- Check the power supply voltage: this should be within the range 11 to 17 Volts d.c.
Warning: the indicator does not accept a.c.
- Check the connection to the tractor.
- Check the power supply cable fuse (15 A).
- For machines equipped with an internal battery, check the 2 A fuse.
- If the fuse is faulty, replace it: fuse type 5x20 2A.
- If these checks fail to reveal any reason for the fault, replace the weighing unit (see the section on
“Fitting and removing the sensors and the unit”).
Fault: The screen displays the ‘BAT’ message.
- The tractor power supply voltage has dropped below 11 V.
- For machines equipped with an internal battery, recharge the battery (see the section “Option: internal
battery life”).
Fault: The weight is not correct.
Cause: If the indicator displays 0 when the machine is loaded, the machine has been declared as
empty when it is full: refer to the section on “Restoring the factory zero setting” in the user instructions.
- Check that the machine meets the specified operating conditions (see the section on “Operating
conditions”).
- Check the connections between the sensors and the circuit board and the condition of the wiring.
- Test the sensors (see 2.2.4) to check the condition of the board and each sensor.
- If the sensors are in working order, and the operating conditions are satisfactory, calibrate the unit
again (see 2.2.5 or 2.2.6).
Fault: The weight is not stable. The display varies while the tractor engine is off.
- Check that the machine meets the specified operating conditions (see the section on “Operating
conditions”).
- Check the connections between the sensors and the circuit board and the condition of the wiring.
- Test the sensors (see 2.2.4).
- Check that the power supply voltage is stable. If not, check that the power supply is correctly
connected to the tractor battery. If the connection is OK, check the tractor’s electrical installation.
- If the power supply voltage is stable, check the voltage stability of each sensor and change the
sensor concerned.
- If these checks fail to reveal any reason for the fault, replace the weighing unit (see section “Fitting
and removing the sensors and the unit”).
2.3
TROUBLESHOOTING
Summary of Contents for IND 360P
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