Snorkel LX41 Electric-sn4022+ - Manual (Page 82)

MOS90 Fault Finding Flow Charts Section 3 - Troubleshooting
Page 3-12 067448-003 LX31/LX41 Electric Work Platform
8 Flashes
- Ther mal cutback
- Heatsink temperature less
than 80ºC (176ºF) (Current
limit will be zero at 90ºC
(194ºF)
- Allow unit to cool down, to
clear flashing
Check current limit setting
Re-set
Check mounting and heatsink of controller
Rectify
Check application is correct
Use larger controller
Replace MOS90 Controller
10 Flashes
- Tachometer fault
- Drive inhibited
- Recycle key to clear fault
Check tachometer wires for opens or shorts
Rectify
Check output voltage from tachometer using
voltmeter
Replace
Check output voltage from tachometer board,
using voltmeter
Replace
Replace MOS90 Controller