Vaillant ecoTEC sustain 24 Operating Instructions Manual page 6

1 Safety
1.3.9 Risk of injury and
material damage due to
maintenance and repairs
carried out incorrectly or
not carried out at all
▶ Never attempt to carry out
maintenance work or repairs
on your product yourself.
▶ Faults and damage should
be immediately rectified by a
competent person.
▶ Adhere to the maintenance
intervals specified.
6
Operating instructions ecoTEC sustain 0020253095_01