Swegon CLASS UNIT Operation & Maintenance Instructions Manual page 31

7.2 TYPE 2: ALARM ON THE PRESSURE VARIATION
- Conditions:
• Mode airflow control or demand control. Unit must have forward fans or backward fans with kit CA.
• External pressostat connected on IN2 input
- Causes:
• Pressure alarm setup in airflow control or demand control mode
• External pressostat connected on IN2 input has triggered
- Effects:
P.10
P.20
S.40
AL1 relay
/
* unless the status has been changed in advanced setup
Operation and maintenance
Displayed on HMI TACtouch
Text displayed
Pressure alarm - Supply air
Pressure alarm - Extract air
Pressure alarm from Pressure Switch*
O.R.1
Closed
instructions – CLASS UNIT TAC5
TAC control board
LED ALARM
ON
Auto reset: yes
LED ALARM
/
LED AF
/
LED Pa
RED
Fans
Run*
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