IPC CT40 - Page 47

Page 47
11. ALARMS ON THE DISPLAY
Acc / Man : Accelerator / Man
The traction lever has been pushed during machine turning ON by the key. Traction can be
engaged only by release and pull again the handle lever.
POT : POTentiometer
The traction potentiometer is broken or badly connected.
Release and push the traction lever: If the error is still on the display, check the
potentiometer and replace.
Lim : Limitation
The MOSFET reach the current limitation. The traction is blocked, It can appear is machine
climb long ramp and traction card overload.
Hom: MOSFET thermal sensor
It appears when the thermal sensor inside the traction MOSFET being activated. Wait 10 min
until the card cool down and try again.
Hot : overheating
Traction motor temperature sensor is engaged. Wait 15 minutes till the temperature
decrease and try again , or check the wiring between motor and card.
MoS : MOSFET
The coil of the main contactor is damaged and the brush or traction function are activated,
The traction MOSFET is broken or in short circuit : the traction is blocked.
The vacuum relay has a problem, replace.
Replace the traction card or check the main contactor.
Check the coil of the black traction motor relay positioned underneath the chassis.
MoF : Mosfet
The traction MOSFET is broken internally ; the traction is blocked, brush and vacuum still
works.
Replace the card.