Parameter settings

To optimize control performance, use the local HMI to enter parameter mode and adjust a number of control parameters. All control parameter settings are retained after power failure.

Proceed as follows to change the control parameters:

Or

Press and hold the + and - buttons simultaneously for more than 3 seconds.

Service level: Release the buttons, and within 2 seconds, press and hold + until Pxx is displayed.
Expert level: Release the buttons, and within 2 seconds, press and hold - until Pxx is displayed.

Press + or - (< or >) to access the desired parameter and the value of the selected parameter is displayed at the same time.

Press () to edit the value of the required parameter.

Press + or - to increase/decrease or select the value of the current parameter during editing.

Press () to confirm the new value or press () to cancel the change, and repeat steps 3 to 5 to change more parameters.

Press () to exit parameter setting mode.

Reload factory setting

  • Select parameter P71 and set it to 1.
  • The factory settings of the control parameters are reloaded.
    • “- - -” is displayed during reload.

Control parameters

Service level

Parameter

Description

Factory setting

Setting range

P02 *

Operation using operating mode selector

1

1 = ON – OFF

2 = ON – ECO – OFF

P14

Keylock

0

0 = Unlock

1 = Fan speed adjustment only

2 = Full lock

P24 *

Select bypass (external circulation only)

0

0 = Disable

1 = Enable

P25 *

Select EXT/INT circulation

0

0 = Disable

1 = Enable

P26

FAU ECO mode

Select time ratio within one hour

1

1 = 1:5

2 = 2:4

3 = 3:3

4 = 4:2

5 = 5:1

P27

Operating mode after power failure

0

0 = Previous operating mode

1 = OFF

2 = ON (Normal mode)

P28

Timer with delay Off (0 up to 23 hours, 0.5 h)

1

0 = Disable

1 = Enable

Note

* The parameters are critical and must be set according to the equipment selected during commissioning.

Expert level

Parameter

Description

Factory setting

Setting range

P54 *

Maximum FAU fan speed

3

1 = 1-speed

2 = 2-speed

3 = 3-speed

4 = DC 0...10 V (ECM fan)

P55

ECM fan max. output

80 %

ECM fan min…100 %

P56

ECM fan min. output

30 %

1 %...ECM fan max.

P59

Fan minimum On time

2 min

1...6 min

P71

Restore factory setting

0

0 = Disable

1 = Reload start

P98 *

Enable Chinese text display

1

0 = Disable

1 = Enable

Note

* The parameters are critical and must be set according to the equipment selected during commissioning.

Expert level (diagnostics & tests)

Parameter

Description

Range

Dependencies

d06

Software version

xxx is displayed, e.g. 010

 

d07

Fresh air unit DC output check

0 = 0 % output

1...100 = 1 % to 100 % output

P54

d08

Fresh air unit (FAU) relay output check

Q1 to Q5 are NO relays (normal open)

0 = All relays open

1 = Close only Q1

2 = Close only Q2

3 = Close only Q3

4 = Close only Q4

5 = Close only Q5

6 = All relays closed

P24, P25, P54

d09

FAU – active bypass damper

OPE = Open (normal position)

CLO = Close

P24

d10

FAU – active EXT/INT circulation damper

OPE = Open (normal position)

CLO = Close

P25