14
Service
Preventive maintenance
Introduction
The unit must be serviced at regular intervals to maintain a good indoor climate in the
house, avoid breakdown or inefficient operation and maximise durability. It is important
to note that the intervals between services may vary depending on the environment in
which the unit is installed.
Warning
Disconnect all power to the unit before beginning work!
Only trained and certified engineers are permitted to service the internal parts of
the unit.
Users may replace filters
Ensure that all work is completed and that the polystyrene front cover and the front
cover have been replaced before power is reconnected.
Parts
The following parts must be checked and/or replaced as required:
Filters
Fans
Drip tray and internal surfaces
Drain and discharge pipe
Heat exchanger
Controls
The unit must also be serviced if it suddenly shows signs of unstable operations, vi-
brates, leaks, makes a noise or other faults occur as described in the section on trou-
bleshooting.
Service intervals
The table provides an overview of service intervals for different parts:
Service interval
Task
To be carried out by
0.5 years
Filter check. Change if required User
External cleaning
User
1 year
Filter replacement
User
External discharge
Certified engineer
2 years
Heat exchanger
Certified engineer
Fans
Certified engineer
Drip tray/internal discharge
Certified engineer
Internal air ducts
Certified engineer
Filters and external
cleaning
Intervals can be adapted to the use of the house and the outdoor air particle and smog
content. See the user guide for details. Filters must, however, be checked every six
months. Dantherm Air Handling always recommends replacing filters at least once a
year.
Check or replace filters when the filter alarm flashes yellow on the control panel while
beeping (once an hour). Always reset the filter timer after a filter replacement by press-
ing the filter reset button next to the filter for 2 seconds.
Clean the unit externally and around the filter openings with a damp cloth to maintain
good hygiene. Filter replacement is described in detail in the user guide
Continued overleaf
