Webasto Air Top 2000 D Service And Repair Manual page 50

8 Servicing
8.8.3 Replacement of Control Unit
Air Top 2000 (24 Volt) TRS
1. Remove control unit according to 8.7.2.1.
2. Remove leaf spring contacts of grey and violet wire
from connector X6, contacts 4 and 6.
3. Arrest leaf spring contacts in connector X11 as
follows: grey wire in contact 3, violet wire in
contact 2.
4. Install new control unit according to 8.7.2.2.
5. Connect connector X6 and X11.
6. Perform functional check. Test TRS switch-off as
required stopping engine and starting auxiliary drive.
X6
1
3
5
7
2
4
6
8
812
4
6
6
5
4
3
2
grey
1
X11
violet
3
2
8.9 First Operation
After installation of the air heater the fuel supply system
must be bled thoroughly.
Due to low fuel consumption several switch-ons are
required to prime the fuel supply line to the air heater.
During the test run of the air heater all connections are
to be checked for no leakage and tight fit. Should the air
heater during operation assume an error lockout condi-
tion, perform troubleshooting.
Air Top 2000
NOTE