Maintenance
Vent 402 – 6721815546 (2021/03)
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Open the valve (5).
Check the magnetite indicator
After installation and startup, the magnetite indicator should be checked
at denser intervals. If there is a lot of magnetic dirt on the magnet stick in
the particle filter and if this dirt causes frequent alarms related to poor
flow (e.g low or poor flow, high output or HP alarm), a magnetite filter
(see accessory list) must be installed to avoid regular emptying of the
indicator. A filter also increases the life of components in both the heat
pump and the remaining parts of the heating system.
8.15 Fan service
Even though the heat pump is equipped with an air filter, very small dust
particles may accumulate on the fan blades over the course of many
years and lower its performance. It is recommended to check then fan
every 5-6 years and clean it if necessary.
For guidance about service interventions in the refrigerant box (beyond
normal maintenance), see separate service manual.
Dismantle the upper and middle front covers, according to Fig. 6 and
Fig. 7.
Fig. 30
1. Remove the filter
2. Remove the 4 screws
3. Remove the refrigerant box’s front cover
Fig. 31
Remove the electrical connections (2 connectors)
Fig. 32
Slide fan volute case out
Fig. 33
1. Remove fan volute case right
2. Remove fan and fan support from fan volute case left (4 screws)
Fig. 34
Remove fan from fan support (4 screws)
1.
2.
3.
10021702-001
10021704-001
10021705-001
10021706-001
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