Spheros Thermo S 160, Workshop Manual

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Thermo S 160/230/300/350/400 5 Troubleshooting and error correction
513
Inspection using SST diagnosis
t Disconnect the heater from the vehicle electrical
system.
t Disconnect the temperature sensor plug and connect
the test plug to the adapter wiring harness.
t
Check if the motor used corresponds to the heating
capacity class.
t
Inspect the motor for bearing conditions (stiffness).
For this purpose remove hood as needed (see 8.4).
t
Reconnect the heater to the vehicle electrical system.
t Connect the SST diagnosis adapter to the heater and
a PC via the interface in the heater wiring harness.
Start SST diagnosis, establish connection to the
heater and open the Component Test menu.
t Select the motor in the Component Test menu.
Insert target speed and runtime. Next start the
component test.
Compare the displayed actual speed with the target
speed of SST diagnosis.
t After the test is completed, exit SST diagnosis
as needed.
t Disconnect the heater from the vehicle electrical
system.
t Disconnect the test plug and reconnect the
temperature sensor plug.
t
Install hood (see 8.4).
5.5.8 Electronic ignition unit inspection
It is possible to manually te st the functionality of the
electronic ignition unit, and using the Component Test
menu of SST diagnosis.
It can only be verified by vi sual inspection of the ignition
electrode, whether the ignition spark jumps over to the
ignition electrode.
High voltage: The voltage received by the ignition
electrode is >13,000 Volt.
During operation or testing of the electronic ignition unit, the
ignition electrode may not be contacted by persons or items.
Do not test or apply voltage to the electronic ignition unit
without an ignition electrode.
Inspect the electronic ignition unit for housing and end
cover damage.
No mechanical damage may be caused or be present on
housing and end cover.
Fig. 511
10k
:
Ignition electrode 13,000 Volt
NOTE
WARNING
CAUTION