Webasto HL 90 Notice D'utilisation Et D'entretien page 22

Liability:
Failure to follow the installation instructions and
the notes contained therein will lead to all liability
being refused by Webasto. The same applies if GB
repairs are carried out incorrectly or with the use
of parts other than genuine spare parts. This
invalidates the type approval for the heater and
its homologation / EC type permit.
Liability claims can only be lodged if the claimant
can prove that he has complied with the servicing
and safety instructions.
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