Table 1 - Sc1000 Error Messages - Valeo SC1000 IVECO Operating Instructions Manual

BUS BODY ELECTRONICS
Error message dis-
played
A5
A6
B0
B1
B2

Table 1 - SC1000 Error Messages

Description
Convector tempera-
ture sensor – fault
(rear)
Convector tempera-
ture sensor – fault
(front)
High-/Low pressure
➔ The clutch will be
activated after three
minutes if the pres-
sure falls.
High-/Low pressure
(The error message
B0 occurred more
than three times since
the last start of the
control unit)
Ice formation at the
evaporator
Cause/remedy
1. Check whether B1 occurred, if this is the case
see B1.
2. Short-term overload of the airconditioning sys-
tem due to high engine speed at high ambient
temperature.
➔ The air-conditioning system turns off for three
minutes.
The air-conditioning system is switched off com-
pletely. Turn the ignition off and then on again to
initiate a reboot of the system. It is not enough to
turn off the engine and then on again, because a
reboot of the control unit is required. Can an over-
load caused by high engine speed at high ambient
temperature be excluded, the following must be
checked:
- Check the wiring of the compressor pressure
switches
- Replace the pressure switch
- Check the wiring of the solenoid valve
- Replace the solenoid valve
- Check the wiring of the condenser fan
- Replace the condenser fan
- Check refrigerant charge (too much / too little). If
there is too little a leak test must be performed
- Examine the roof-top airconditioning unit for soil-
ing and check the function of the fans
- Replace substation
Temporary shutdown of the airconditioning unit. If
this message appears frequently, these steps
must be followed:
- Examine air duct for soiling
- Check evaporator fan wiring
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