• Keep the unit surface free from dust.
• Clean the filters with a vacuum cleaner following the below illustrations Fig. 8.g-i-j for the QR400A unit and Fig. 8.g-h-i-j for
the QR550A unit when the FILTER signal (Fig. 7.c - ) is displayed on LCD. The actual need to perform this operation may
vary depending on indoor and outdoor ambient conditions.
• Press FILTER button (Fig. 7.c - ) to reset the Filter Alarm.
• Filters must be replaced every year.
h
e
fig. 8.h
fig. 8.g
fig. 8.i
fig. 8.j
8.4 service
WARninG
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or
electrical work!
WARninG
The installation and service of the unit and complete ventilation system must be performed by an authorized installer and in
accordance with local rules and regulations.
• Keep the unit surface free from dust.
• Clean the filters with a vacuum cleaner following the below illustrations (Fig. 8.k-l-m-n) when the FILTER signal (Fig. 7.c - )
is displayed on LCD. The actual need to perform this operation may vary depending on indoor and outdoor ambient conditions.
• Press FILTER button (Fig. 7.c - ) to reset the Filter Alarm.
• Filters must be replaced every year.
h
e
fig. 8.k
fig. 8.l
QR400A - QR550A
QR280A
Summary of Contents for QR280A
Page 1: ...QR280A QR400A QR550A aL ...
