66
Fault finding instruction, continued
Inconvenience, con-
tinued
Inconvenience Cause Action
There is damp on
the inside of the
windows and
other cold sur-
faces (autumn,
winter and spring)
The air change is too low or
the air distribution is unfortu-
nate which causes too low air
change in critical rooms.
Accurately adjust the air flow
rates and its distribution
through balancing the valves to
ensure the air change in critical
places. Set the unit to Auto-
matic Demand Mode so it
automatically keeps the humid-
ity on a suitable level.
Do not let the unit operate con-
stantly on Fan Step 1 or 2 in
Manual Operation Mode as it
does not guarantee keeping
the humidity level in the house
down, when the moisture load
of the house is high.
The unit is always
operating at the
same speed.
The unit is set to Manual Op-
eration Mode at one fixed
speed.
Switch to Automatic Demand
Mode after which the unit is go-
ing to adjust to air flow rates
according to the need of the
house.
The display goes
out after a short
period of time, af-
ter which only the
green light-
emitting diode is
on.
The display goes into Energy
Saving Mode after 2 minutes to
effect power save.
The unit is operating correctly.
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