MOS90 Fault Finding Flow Charts Section 3 - Troubleshooting
Page 3-14 067448-023 LX31/LX41 Electric and Bi-Energy Work Platform | European Specifications
LED off
- Unit not powered up or controller
faulty, or LED faulty
Check battery is connected and keyswitch is on
Rectify
Check all fuses are intact
Rectify
Check supply wiring. Does calibrator unit still
function
Rectify
Controller is faulty:
a) Auto fail-safe check failed. LED turns off when
a direction is first selected after power up.
Recycle keyswitch.
b) Contactor drive S/C. LED resets itself if short
circuit clears.
c) Mosfets did not turn on. Recycle direction to
neutral to clear fault indication.
Replace controller
14 Flashes
- Battery voltage has fallen out
of range.
- Traction and pump mode will
not be allowed
- Requires key recycle to clear
fualt
Check battery voltage (under load) with a voltme-
ter or calibrator
Change/charge battery
Check power connections, fuses, etc.
Repair/replace
Check for battery leakage to frame
Rectify
Replace MOS90 Controller
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