Service manual

Load Sensing System - CE
SKYJACK, Page 15
SJIII Compact Series
143909
Section 4 - Troubleshooting Information Service and Maintenance
4.3-11 Flash Code F12: Too Many
1. This message occurs if the DYNAMIC lift takes too long. This message could occur if the UP switch
was not released at the end of the dynamic lift.
If the machine takes more than two minutes to lift, the GP102 may need modification to avoid -
this problem.
4.3-12 Flash Code F13: Low Height Range
1. This message occurs at the end of the DYNAMIC lift if the height sensor output did not change sufficiently
to give a reasonably accurate platform height estimate.
This message could occur if the UP switch was accidentally opened too early (when the platform is not
fully raised).
This message would occur if the UP switch was accidentally opened near the start of the DYNAMIC
lift.
If the platform is fully raised, check the elevation switch wiring. -
4.3-13 Flash Code F14: Bad Height
1. This message occurs if the height sensor output (P4-3) is out of range during the DYNAMIC lift.
The height sensor output must be between 1.0V and 4.0V. Check DIAGNOSTICS / SENSORS -
to see the output. A reading of 0V or 5V is probably due to a wiring problem.
4.3-14 Flash Code F15: Check Elev
1. This message is given if the elevation switch (P2-10) is open when the platform has been fully lowered
after the DYNAMIC lift.
This message would occur if the DOWN switch was accidentally opened before the platform was fully
lowered.
If the platform is fully lowered, check the elevation switch. -
4.3-15 Flash Code F16: Low Elev.open
1. This message is given if the elevation switch (P2-10) opened during lift at a too low height (below
5%).
If it opens below 5%, the pressure is probably too unpredictable to allow reliable detection -
of an overloaded platform when initially raised. Check CALIBRATIONS / HEIGHT CALS; the
“ElevUp” value shows the recorded height where the switch opened.
4.3-16 Flash Code F17: High Elev.open
1. This message is given if the elevation switch (P2-10) opened during lift at a too high height
(above 25%).
If it opens above 25%, the platform is too high when the overloaded platform is detected! -
Check CALIBRATIONS / HEIGHT CALS; the “ElevUp” value shows the recorded height where
the switch opened.
4.3-17 Flash Code F18: Low Elev.close
1. This message is given if the elevation switch (P2-10) closed during lower at a too low height (below
5%).
If it closes below 5%, height sensor fault detection is compromised. Check CALIBRATIONS / -
HEIGHT CALS; the “ElevDown” value shows the recorded height where the switch opened.