Troubleshooting:
Improve the air cooling of the controller. If the alarm is signalled when the
controller is cold, the possible reasons are a thermal sensor failure or a
failure in the logic card. In this case, it is necessary to replace the controller.
7) “BATTERY LOW”
Cause:
It occurs when the battery charge is calculated being less than or equal to
10% of the full charge and the BATTERY CHECK setting is other than 0
(refer to SET OPTION menu).
Troubleshooting:
Get the battery charged. If it doesn’t work, measure with a voltmeter the
battery voltage and compare it with the value in the BATTERY VOLTAGE
parameter. If they are different adjust the value of the ADJUST BATTERY
function.
8) “EEPROM KO”
Cause:
It’s due to a HW or SW defect of the non-volatile embedded memory
supporting the controller parameters. This alarm does not inhibit the machine
operations, but the truck will work with the default values.
Troubleshooting:
Try to execute a CLEAR EEPROM operation (refer to Console manual).
Switch the key off and on to check the result. If the alarm occurs
permanently, it is necessary to replace the controller. If the alarm disappears,
the previously stored parameters will have been replaced by the default
parameters.
9) “MOTOR TEMPERATURE”
Cause:
This warning occurs when the temperature sensor is opened (if digital) or has
overtaken the threshold of 150° (if analog).
Troubleshooting:
Check the thermal sensor inside the motor (use the MOTOR
TEMPERATURE reading in the TESTER menu); check the sensor ohmic
value and the sensor wiring. If the sensor is OK, improve the air cooling of
the motor. If the warning is present when the motor is cool, then the problem
is inside the controller.
10) “THERMIC SENSOR KO”
Cause:
The output of the controller thermal sensor is out of range.
Troubleshooting:
This type of fault is not related to external components; replace the controller.
11) “CHECK UP NEEDED”
Cause:
This is just a warning to call for the time programmed maintenance.
Troubleshooting:
It is just enough to turn the CHECK UP DONE option to level ON after the
maintenance is executed.
12) “DATA ACQUISITION”
Cause:
Acquisition of the current gains.
Page - 74/86 AEQZP0BA – COMBI AC1 - User Manual
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