Webasto Thermo Pro 90 - Fig. 505 Visual Inspection, Entire Burner Unit

5 Faults, Troubleshooting Thermo Pro 90
511
• Fasteners (3x) of metal fibre evaporator are deformed or
missing. Therefore, metal fibre evaporator is not pressed
on correctly.
Remedy
Replace burner unit.
5.3.3 Entire burner unit
• The cover and the combustion chamber (Fig. 505) must
be permanently connected and may not have any
clearance (check by moving slightly).
Remedy
Replace burner unit.
• If there is a radial air gap between the combustion
chamber and the cover, the burner unit must be
replaced.
• The fuel pipe is permanently connected to the rear wall
and may not have any clearance (check by moving the
fuel pipe slightly).
Remedy in case of clearance between fuel pipe and rear
wall: Replace burner unit.
Fig. 505 Visual inspection, entire burner unit
Combustion chamber
Air holes
Cover
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