Skyjack SJ12 E Service Manual page 142

Section 5 – Procedures
Code Description
THERMIC SENS.
250-M2 TEMP
KO
251-CTRL ERR WRONG SET BAT.
253-CTRL ERR FIELD ORIENT. KO
254-CTRL ERR EB. DRIV.SHRT.
241914ACA
142
Cause
The output of the controller thermal
sensor is out of range.
At start-up, the controller checks the
battery voltage (measured at key input)
and it verifies that it is within a range of
±20% around the nominal value.
The error between the estimated Id
(d-axis current) and the relative set point
is out of range.
The EB driver is shorted.
The microcontroller detects a mismatch
between the set point and the feedback
at the EB output.
Display Module
Troubleshooting
Replace the controller.
Check the condition of the batteries.
Replace or charge.
Replace the controller.
Check if there is a short or a low
impedance path between the
negative coil terminal and -B.
If no problem can be found, replace
the controller.
SJ12 E, SJ16 E, SJ20 E