Dantherm HCV 3 Installation And Service Manual page 68

Fault finding instruction,
Inconvenience,
con-
tinued
66
continued
Inconvenience
There is damp on
The air change is too low or
the inside of the the air distribution is unfortu-
windows and nate which causes too low air
other cold sur- change in critical rooms.
faces (autumn,
winter and spring)
The unit is always The unit is set to Manual Op-
operating at the eration Mode at one fixed
same speed. speed.
The display goes The display goes into Energy
out after a short Saving Mode after 2 minutes to
period of time, af- effect power save.
ter which only the
green light-
emitting diode is
on.
Cause
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.
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 unit is operating correctly.
Action