USER MANUAL
ENGLISH
RS 502
33019741(1)2009-03 A
43
Problem
Possible cause
Remedy
Hopper and hopper door
The hopper does not lift/dump
The pressure is insuf
fi
cient
Increase the pressure
The control valve assembly is stuck
Repair
The hopper does not return to horizontal posi-
tion/lower
The cylinder gaskets are worn
Overhaul the cylinders
The hopper door does not open/close
The actuator is faulty
Replace
The engine is not running
Start the engine
The F3.8 fuse is blown
Replace
The K3 engine running relay is damaged/discon-
nected
Replace/connect
The engine speed sensor is damaged/discon-
nected
Replace/connect
Enabling from display is not present/damaged/
disconnected
Replace/connect
The safety electronic board is damaged/discon-
nected
Replace/connect
The F3.5 safety electronic board fuse is open
Replace
The switch is damaged/disconnected
Replace/connect
The machine is not in neutral/the sensors are
faulty
Release the drive pedal/replace
The door opening warning light is not working
The sensor on the door is damaged/disconnected Replace/connect
The engine is not running
Start the engine
Enabling from display is not present/damaged/
disconnected
Replace/connect
The F3.8 fuse is blown
Replace
The K3 engine running relay is damaged/discon-
nected
Replace/connect
The engine speed sensor is damaged/discon-
nected
Replace/connect
Dust control system nozzles
No water from the nozzles
Out of water
Fill the tank
The pump is not turned on
Turn on the pump
The water
fi
lter is clogged
Clean/replace
The nozzles are clogged
Clean
The K6 water pump relay is burnt
Replace
No water to the nozzles
The F3.4 fuse is blown
Replace
The engine is not running
Start the engine
Enabling from display is not present/damaged/
disconnected
Replace/connect
The engine speed sensor is damaged/discon-
nected
Replace/connect
The pump is not operating
Repair/replace
The water pump switch is turned off/damaged
Turn on
The F3.5 safety electronic board fuse is open
Replace
The water pump does not stop
The water pump relay is shorted
Replace
The
fl
oat is stuck
Repair
Enabling from display is shorted
Reset
The water pump switch has a welded contact
Replace