Swegon ESENSA PX TOP Operation & Maintenance Instructions Manual page 9

6.1 TYPE 1: ALARM INDICATING A FAN FAILURE
- Conditions:
- Causes:
• Failure of fan Fx. This problem is usually caused by the fan motor.
If not, the failure may be caused by an internal cable (control or power) or by the TAC circuit.
- Effects:
Displayed on HMI TACtouch
Code
B.11 Fan 1 failure (Supply)
B.13 Fan 3 failure (Extract)
TAC control board
ALARM OUTPUT AL dPa OUTPUT
Alarm Status /
Diagnostic:
• if both fans are in alarms: check power supply on each fan.
• If only one fan is in alarm, invert the fans control cables on the control board and reset the board:
if the alarm text indicates now the other fan, the problem is located at the fan level originally indicated as faulty, or at its
control cable itself or the wiring of this last one at fan connector side.
Otherwise, if the alarm text indicates the same fan, then the control board is probably faulty due to input or output failure.
16 www.swegon.com
GB.ESENSA.MO.231025
Text displayed
LED ALARM Fans
ON stopped
Auto reset: no
We reserve the right to alter specifications.
6.2 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 ADI2 OR ADI3 input
- Causes:
• Pressure alarm setup in airflow control or demand control mode
• External pressostat connected on ADI2 OR ADI3 input has triggered
- Effects:
Level Code
3 P.10
3 P.15
S.40
ALARM OUTPUT
* unless the status has been changed in advanced setup
We reserve the right to alter specifications.
Displayed on HMI TACtouch
Text displayed
Pressure alarm - Supply air
Pressure alarm - Extract air
Pressure alarm from Pressure Switch*
TAC control board
AL dPa OUTPUT
/ Alarm Status
Auto reset: yes
GB.ESENSA.MO.231025
Level
2
2
2
LED ALARM Fans
ON Run*
www.swegon.com 17