Page 142/169 AFNZPxxx – DUALACE2 NEW GENERATION – User Manual
present, check the mechanical calibration and the functionality of the
potentiometer.
If the problem is not solved, replace the logic board.
TH. PROTECTION (MDI/LED code = 62)
Cause:
The temperature of the controller base plate is above 85 °C.
The maximum current is proportionally decreased with the temperature excess
from 85 °C up to 105 °C. At 105 °C the current is limited to 0 A.
Troubleshooting:
It is necessary to improve the controller cooling. To realize an adequate cooling
in case of finned heat sink important factors are the air flux and the cooling-air
temperature. If the thermal dissipation is realized by applying the controller base
plate onto the truck frame, the important factors are the thickness of the frame
and the planarity and roughness of its surface.
If the alarm occurs when the controller is cold, the possible reasons are a
thermal-sensor failure or a failure in the logic board. In the last case, it is
necessary to replace the controller.
THERMIC SENS. KO (MDI/LED code = 61)
Cause:
The output of the controller thermal sensor is out of range.
Troubleshooting:
This kind of fault is not related to external components. Replace the controller.
THROTTLE PR. (MDI/LED code = 48)
Cause:
A wrong profile has been set in the throttle profile.
Troubleshooting:
Set properly the throttle-related parameters (see paragraph 9.9).
TILLER ERROR (MDI/LED code = 64) (Not present on DualACE2)
Cause:
Input mismatch between H&S input and TILLER/SEAT input: the two inputs are
activated at the same time.
Troubleshooting:
Check if there are wrong connections in the external wiring.
Using the TESTER function of the controller verify that the input-related readings
are in accordance with the actual state of the external input switches.
Check if there is a short circuit between pins
In case no failures/problems have been found, the problem is in the controller,
which has to be replaced.
TILLER OPEN (MDI/LED code = 51)
Cause:
Tiller/seat input (A8 (A6)) has been inactive for more than 120 seconds.
Troubleshooting:
Activate the tiller/seat input.
Check the tiller/seat input state through the TESTER function.
Check the wirings.