16 - EN
8. Pull strip to remove heat exchanger (D).
9. Inspecting and if necessary clean the heat ex-
changer.
- Use a soft brush to clean the lamellae.
- Use a vacuum cleaner or air gun (no high pressure)
to remove dirt and dust.
Always clean against the direction of the air-
flow. This prevent dirt from getting stuck in the
heat exchanger.
a. Submerge the heat exchanger several times in hot
water (max. 40 °C).
b. Rinse the heat exchanger with clean hot tap water
(max. 40 °C).
c. Clasp the heat exchanger between both hands (on
the coloured side surfaces) and shake the water
from the heat exchanger.
Do not use aggressive cleaning agents or sol-
vents.
If the fans also need maintenance do not re-in-
stall the heat exchanger yet.
10.
If no more maintenance is necessary install all
parts in reverse order, reconnect the power and
carry out the self-test in accordance with menu
P76
.
Fasten the screws to a maximum of 1.5 Nm.
This is roughly equal to setting 2 of an average
battery-powered drill.
2.9.2 Inspecting and cleaning the fans
Check the fans once every 2 years.
1. Remove the heat exchanger as instructed in the
maintenance chapter of the heat exchanger
2. Remove the inflow nozzle (F) by unscrewing the 2
screws surrounding the scroll casing.
3. Inspecting and if necessary clean the fans (O).
- Use a soft brush to clean the fan impellers.
- Use a vacuum cleaner to remove dust.
Do not damage the fan impellers or temperatu-
re sensor.
4. Install all parts in reverse order.
5. Carry out the self-test in accordance with menu
P76.
Fasten the screws to a maximum of 1.2 ft. lbf
(1.5Nm). This is roughly equal to setting 2 of an
average battery-powered drill.
2.10 Malfunctions
Malfunctions in the ComfoAir are reported as follows:
■
The malfunction alert appears on the ComfoSense
panel.
Malfunction alerts may not appear on the digital operat-
ing device in all cases, even though there is a malfunction
(or problem). A concise explanation of both types of mal-
function (or problem) is given in the paragraphs below.
