Fav 700
Fav 900
Hydraulics / Valve assemblies
Control valves SB 23 LS - EHS / Emergency mode
A
General
Fav 900 chassis number 23/3001 and up
10/1999
9620
000002
A
b
4/6
Capitel
Docu-No.
Index
Date
Version
Page
Control valves SB 23 LS - EHS / Emergency mode
Text-module
Flashing code
Fault
First
flashing
sequence
(after
lengthy
pause)
Second
flashing
sequence
(after short
pause)
0
0
No fault (LED is off)
Component or CAN fault
1
1
Receipt message 1 missing / e.g. ECU not at CAN, direct power supply to valve
1
2
Receipt message 2 missing
1
3
Implausible receipt message 1 / ECU sends incorrect message content
1
4
Implausible receipt message 2
1
5
Potentiometer / PWM fault / only if valve was wrongly programmed by Bosch
1
6
EEPROM inconsistent
1
7
No fault, but valve switched off for > 1s and may only switch back on after receipt
of setpoint = neutral
Minor faults
2
1
Undervoltage
2
2
Overvoltage, not dangerous
2
3
Slide does not reach required position
2
4
Slide is deflected too far
2
5
Floating position is not reached
2
6
Manual operation
Only with CAN if faults 21 and 22 do not switch valve off
3
1
Undervoltage < 8V, valve switches off output stage
3
2
Overvoltage 36-45V, valve switches off output stage
Serious faults with internal safety cutout
4
1
High overvoltage ( > approx. 45 V )
4
2
Output stage fault (output stage for pilot solenoid valve)
4
3
Position sensor fault
Extremely serious faults with internal safety cutout,
external shutoff required
8
1
Valve slide cannot be returned to neutral position
8
2
Valve slide not in neutral position when switching on
