SystemAir CD Control Panel Service Menu page 8

Menu level 1 Menu level 2
Functions
Digital input
Config DI 1–3
→Config DI 4–7
Functions
→Digital output
Defrosting
Modbus
Functions
Digital output
→Defrosting
Modbus
Functions
Defrosting
→Modbus
Factory reset
CD Control panel
D2074870
Menu level 3 Explanation
DI 4–7 DI 4–7 are default set from factory and can't
be changed by the user. Below follows a
DI4: Stop heat
short description of each function.
DI5: Ext run
DI4: Makes it possible to turn the electrical
re-heater battery on or off.
DI6: Damper test
DI5: Turn the Extended/forced running
DI7: Home/leave
function on or off by the help of a switch. The
function overrides current set fan speed.
DI6: Automatic test of the bypass damper
function. This digital input is not available for
the user. (VC units).
DI7: Switching on this input decreases
the supply air temp set point with 10K .
This function is used when the building is
uninhabited for a longer period.
Note:
The "Home/leave" function is not working if
Water heater is activated.
Digital output Shows The current settings of digital outputs
1–5 (the settings in the column to the left are
1: SF 67%
examples).
2: EF 67%
1:
supply air fan (shown as percentage of the
3: Rotor motor
maximum speed).
4: Alarm Y/N
2:
extract air fan (shown as percentage of the
5: Dmp OFF
maximum speed).
6: Reheater Y/N
3:
is active or not (VR units).
3:
4:
alarm is active or not
5:
is on or off (230 V signal relay).
6:
electrical re-heater is active or not.
Defrosting Use this dialogue frame to set how
aggressive you want the defrosting function
Mode 0–5
to operate.
Set VR units, defrosting mode between 0–5,
VC units between 1–5. For VR default is 0,
default for VC is 3.
Allow unbalance Only for VC units.
Yes/No
Set If you during the defrosting cycle can
Reduced flow accept a temporary unbalance of the air
Active flow from the unit, i.e. supply air decreases.
Bypass defrosting Select YES or NO.
Active
Shows if any defrosting cycle is active.
Stop defrosting
Active
Modbus Information about Modbus communication
and variables can be found in the Modbus
Address: 1–247
user manual for residential units in the online
catalogue at www.systemair.com.
Baud: 9600/19200
Parity:
None/Even/Odd
6
SF 67%: Current set speed of the
EF 67% Current set speed of the
Rotor ON/OFF: Indicated if the rotor
Not used (VC units)
Alarm Y/N: Indicates if the sum.
Dmp OFF: Outdoor/exhaust air damper
Reheater Y/N: Indicates if the
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