Thermo S 160/230/300/350/400
5 Troubleshooting and error correction
501
5
Troubleshooting and error correction
5.1
General
This section describes troubleshooting and error
correction for Thermo S 160, S 230, S 300, S 350 and
S 400 heaters.
Troubleshooting and error correction may only be
performed by briefed personnel.
In case of doubt functional connections can be obtained in
chapters 3 and 4.
Error detection is usually limited to localizing the faulty
component.
The following malfunction causes are not taken into
account and should basically always be verified and/or a
malfunction due to these reasons should be excluded:
t
Corrosion on plugs
t
Loose plug connections
t
Crimp failures on plugs and/or pins
t
Corrosion on cable and fuses
t
Corrosion on battery terminals
t
Cable insulation damage
Prior to replacing a fuse troubleshooting needs to be
performed. The heater must be disconnected from the
vehicle electrical system and the fuse must switch into
currentless state.
A properly dimensioned fuse must be inserted (see
chapter 6 Schematic diagrams).
After each error correction a functional test must be
performed in the vehicle.
5.2
General error symptoms
The following table lists possible, general error symptoms.
Table 501: General error symptoms
e
s
u
a
c
e
l
b
i
s
s
o
P
m
o
t
p
m
y
s
r
o
r
r
E
Error in the electronics
Operating display is not illuminated and the heater does
not function.
t
No supply voltage.
t
Fuses.
t
Supply cable to the plug contacts of plug A of the
control unit.
e
h
t
n
i
r
o
p
m
u
p
g
n
i
t
a
l
u
c
r
i
c
e
h
t
n
i
t
i
u
c
r
i
c
t
r
o
h
S
.
d
e
r
e
g
g
i
r
t
2
F
e
s
u
F
supply cable to the heater.
r
e
n
r
u
b
/
r
e
t
a
e
h
e
h
t
o
t
e
l
b
a
c
y
l
p
p
u
s
e
h
t
n
i
t
i
u
c
r
i
c
t
r
o
h
S
.
d
e
r
e
g
g
i
r
t
3
F
e
s
u
F
motor/ nozzle block preheater (if installed).
Heater is functional, however the operating display
is not illuminated.
Operating display defective to cables to
the operating display interrupted or shorted.
CAUTION
Summary of Contents for Thermo S 160
Page 2: ......
Page 6: ...1 Introduction Thermo S 160 230 300 350 400 4...
Page 11: ...S o m r e h T n o i t c u d o r t n I 1 160 230 300 350 400 105...
Page 49: ...5 Troubleshooting and error correction Thermo S 160 230 300 350 400 520...
Page 55: ...r e h T s m a r g a i d c i t a m e h c S 6 mo S 160 230 300 350 400 606...
Page 71: ...9 Modifications and retrofits Thermo S 160 230 300 350 400 902...
Page 73: ...10 Packing storage shipping Thermo S 160 230 300 350 400 1002 Empty page for notes...
