Spheros Thermo S 160, Workshop Manual

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5 Troubleshooting and error correction Thermo S 160/230/300/350/400
512
5.5.5 Adapter wiring harness inspection
Inspection
t Inspect adapter wiring harness for tight fit and
damage of the rubber grommet and the plug.
t Remove hood (see 8.4).
t Disconnect temperature sensor.
t Disconnect adapter wiring harness from the control
unit and pull from its position in the burner housing.
t
Inspect adapter wiring harness for plug and cable
insulation damage.
t
Check electrical cable connection on the plug pins.
t
Connect adapter wiring harness to the control unit and
return it into its position in the burner housing.
t Connect temperature sensor.
t Install hood (see 8.4).
5.5.6 Fan and combustion air intake line visual
inspection
t Inspect a possibly available combustion air intake line
for contamination, condition and deposits.
t
Remove hood (see 8.4).
t
Inspect fan channels for contamination and deposits.
t
Inspect fan and motor shaft mount for cracks, stress
marks and deformations.
t Check cover plate for tight fit.
t Check circlip for proper fit.
t Install hood (see 8.4).
5.5.7 Burner motor inspection
It is possible to test the burner motor using the
Component Test menu of SST diagnosis.
The motor can also be checked by applying direct voltage.
The electrical connection to the control unit must be
disconnected first.
Fig. 506 Adapter wiring harness
Fig. 507
Fig. 510
Hood
Shaft
circlip
Fan
Motor
Motor cross member
NOTE