20 - EN
6.14 Explanation of the SYSTEM TEST menu
A system test can be initiated in the SYSTEM TEST
menu.
(MENU>Login>SYSTEM TEST)
Meaning
SYSTEM TEST
CANCELLED
MAX. BELOW 150 m
3
/h
This error must be resolved in order to
carry out a system test. Otherwise errors
of the preheater or bypass cannot be
resolved!
Possible causes:
■
HIGH SETTING set lower than 160 m
3
/h
■
Air volume of valves not set correctly
(valves too tight)
■
Air ducts have too much resistance
■
Outdoor air grille blocked
■
ALTITUDE entered incorrectly
■
Filters are dirty
■
Heat exchanger is frozen
Preset 3 supply air
(m
3
/h)
ACTUAL (SETTING)
The air volume on the supply side (ODA
& SUP) is set lower. Accept this or reduce
the air resistance on the supply side of the
system. Then carry out another system
test.
Possible causes:
■
Air volume of valves not set correctly
(valves too tight)
■
Air ducts have too much resistance
■
Outdoor air grille blocked
■
ALTITUDE entered incorrectly
■
Filters are dirty
Preset 3 extract air
(m
3
/h)
ACTUAL (SETTING)
The air volume is lower than set on the
extract side (ETA & EHA). Accept this or
reduce the air resistance on the extract
side of the system. Then carry out another
system test.
Possible causes:
■
Air volume of valves not set correctly
(valves too tight)
■
Air ducts have too much resistance
■
ALTITUDE entered incorrectly
■
Filters are dirty
■
Heat exchanger is frozen
6.15 Explanation of RESTORE TO FACTORY
SETTINGS menu
The factory settings of the unit are permanently saved
to the control PCB. Using the RESTORE TO FACTORY
SETTINGS menu, the unit can be switched back to the
factory settings. This permanently overwrites all adjusted
settings. After the reset, the unit will start running as if it
had just left production. The air specifications, analogue
input and RF controls (if unit is equipped with) will have
to be reset/re-programmed.
If only the malfunction codes need to be reset, then
use the reset function in menu errors on the first menu
screen.
6.16 Explanation of control methods
What is SET METHOD?
Regulating involves maintaining the programmed set
point. If the incoming signal of the desired set point
deviates, the unit will adapt the outgoing signal to arrive
at the desired set point.
What is POSITIVE?
In the event of positive regulating, power will go up if
the measurement is below the set point. In the event of
a higher measurement, power will go down. Most of the
pressure sensors use positive regulating.
Signal
Geschwindigkeit
What is NEGATIVE?
In the event of negative regulating, power is increased
if the measurement is higher than the set point. In the
event of a lower measurement, power is decreased.
Signal
Geschwindigkeit
Speed
Speed
