Swegon CLASS UNIT Operation & Maintenance Instructions Manual page 37

7.11 TYPE 10 BIS: DRAIN PUMP ALARM
- Conditions:
• Only for CLASS UNIT LP
- Causes:
• The level of condensate is higher than a set Setting (approx. 1.5 cm).
It can also be activated if the pump is not present or defective
- Effects:
R.10 Condensate tray full
AL1 relay
Alarm status
When activated, the supply and exhaust fans are stopped. This alarm is automatically reset when
the water level in the drain pan is lower than the setpoint, and the fans restart automatically.
7.12 TYPE 11: ALARM INDICATING FAILURE ON T° SENSOR T5
- Conditions:
• Only with post-heating, post-cooling or free cooling with heat wheel or modulating bypass option
- Causes:
• T° sensor T5 located in the supply duct and connected to the TAC circuit is open, or short-circuited. This sensor is used
to regulate the post-heating or post-cooling function in the case of comfort T° control on T5 or to control the high
and low thresholds to limit the supply air temperature in the case of comfort T° control on T2.
- Effects:
T.50 Sensor T5 disconnected
T.51 Sensor T5 short circuit
AL1 relay
Alarm status
Operation and maintenance
Displayed on HMI TACtouch
Text displayed
O.R.1
/
Displayed on HMI TACtouch
Text displayed
O.R.1
/
Manual reset mandatory.
instructions – CLASS UNIT TAC5
TAC control board
LED ALARM
ON
Auto reset: yes
TAC control board
LED ALARM
ON
LED ALARM
RED
LED AF
Stopped if SERVICE STOP
/
LED ALARM
RED
LED AF
/
LED Pa
/
Fans
FAN
LED Pa
/
Fans
/
37