EN - 18
2.10.2 3-position switch with malfunction
indicators
The 3-position switches that are fi tted with a mal-
function indicator show when a malfunction or fi l-
ter dirty alert has occurred. Depending on the type
of the 3-position switch, this is done in one of the
following two ways:
• 3-position switch with malfunction indicator.
In the event of a malfunction or fi lter dirty
alert the indicator lights up;
• Wireless 3-position switch with malfunction
indicator.
The malfunction indicators will light up once
this 3-position switch is used. One indicator
will light up green to indicate communication
has been established. Subsequently, in the
event of a malfunctionor fi lter dirty alert both
indicators will fl ash red 3 times. After that,
both indicators will light up green once more.
