Webasto Air Top 2000 D Service And Repair Manual page 27

7 Circuit Diagrams
1
Item Nomenclature
A1 Air Heater
A2 Control Unit
B1 Flame Sensor
B2 Temperature Sensor
B3 Temperature Limiter
E Glow Plug
F2 Fuse 24V 10A/12V 15A
H7 LED red (in item P)
H8 Heating symbol in display (in item P)
H9 Light (in item P)
M Motor
P1 Combination Timer (1531)
S3 Switch
X1-X5 Connection 2-pole
X6 Connection 8-pole
X8 Connection 2-pole
X9 Connection 2-pole
X11 Connection 6-pole
X12 Connection 1-pole
X13 Connection 12-pole
Y1 Dosing Pump
Fig. 704 Circuit Diagram Automatic Control Air Top 2000 Diagnosis, 12V/24V with Combination Timer
704
ϑ ϑ
ϑ
Remark
Air Top 2000
Flat Fuse SAE J 1284
Instant heat switch illumination,
standy indication,
operating indicator light
Operating indicator light,
overheat indication
Symbol illumination
Instant heating remote control
of item A2
of item A2
of item A2
of item A2
Diagnosis (K-wire)
of item P
Air Top 2000
2
Wire Gauges
< 7.5 m 7.5 - 15 m
2 2
0.75 mm 1.5 mm
2
1.0 mm 1.5 mm
2
1.5 mm 2.5 mm
2
2.5 mm 4.0 mm
2
4.0 mm 6.0 mm
Wire Colours
bl blue
br brown
ge yellow
gn green
gr grey
or orange
rt red
sw black
vi violet
ws white
with plus from terminal (15/75)
1
to connection 10:
permanent operation during
instant heating as long as
ignition on
without plus to connection 10:
heating time programmable as
required (10 min to 120 min),
default setting 120 min.
Connection X11/2 and X11/3
2
for TRS function only
2
2
2
2