19
Heater Diagnostics
Brown
Violet
Brown
LightBrown
Black
White
Brown
Green
Green
Red
Red
Blue
Blue
Brown
Blue
1 2 3 4 5 6 7 8 9 10 1 12 13 14
Yellow
Brown
Red
Brown
Brown
Blue
Blue/White
DIAG
TRS
Yellow
a) Power frombattery“+”.
b) Switchcontrol toheater.
c) Power frombattery“-”.
d)Diagnostics fromheater.
e)Tovehicledimmer switch for lightdisplay.
f)Tovehicle ignitionaccessories for continuous
operationof heater.
12 11 10 9 8 7 6 5 4 3 2 1
4 3 2 1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
b)
a)
d)
c)
4 3 2 1
2 4 6 8
1 3 5 7
8 6 4 2
7 5 3 1
3.2.9
5.1
2.7
Red
Red
Red/Yellow
Red
Brown
Red
Brown
Black/Red
LightGreen
Blue/White
Blue
Yellow
Black/White
S1
B1
S1
B1
B3
2.1
2.12
1.1
1.2
2.2
1.5
1.13
1.12
1 3 5 7 9 11 13
2 4 6 8 10 12 14
87
87a 85
30
86
M
1 2
3 4
B2
B2
M
P
h)
Optional
e)
Optional
f)
Optional
HydronicD4SC 12Volt
Model 25 2096 05
WiringHarnessP/N:
20 2900 70 05 03
(CA0 60 503)
1.1 Blower motor
1.2 Glow pin
1.5 Overheat sensor
1.12 Flame sensor
1.13 Temperature sensor
2.1 Control unit
2.12 Water Pump
2.2 Fuel metering pump
2.7 20 ampmain fuse
3.12 Push/Pull switch
3.2.9 7 day timer
5.1 Battery
Red
K(15)
15(K)
Yellow
Brown
31
0
3.1.1
Push/Pull switch
7 day timer
3.12
