Swegon ESENSA PX TOP Operation & Maintenance Instructions Manual page 12

6.8 TYPE 9: ALARM INDICATING A T° SENSOR T1/T2/T3 FAILURE
- Conditions:
- Causes:
• One or more of the T° sensors T1/T2/T3 connected to the TAC circuit and mounted on heat exchanger is
defect or not connected. These sensors are needed for the bypass control and the anti-frost procedure.
- Effects:
Displayed on HMI TACtouch
Code
T.10 Sensor T1 disconnected
T.11 Sensor T1 short circuit
T.20 Sensor T2 disconnected
T.21 Sensor T2 short circuit
T.30 Sensor T3 disconnected
T.31 Sensor T3 short circuit
TAC control board
ALARM OUTPUT AL dPa OUTPUT
Alarm status /
Manual reset mandatory.
6.9 TYPE 10: ALARM INDICATING FAILURE ON T° SENSOR T4/T7/T8
- Conditions:
• External hydraulic coil option (IBA or EBA/EBA-/EBA+-/EBAin)
- Causes:
• T° sensor located on the coil and connected to the TAC circuit is defective (open or short circuit) or not connected.
T° sensor to consider is T7 for postheating IBA or EBA, T8 for postcooling or reversible, T4 for preheating .This is used to
prevent frosting of the hydraulic coil. In this case, as a safety measure, the 3-way valve is opened and the circulator contact
is closed.
- Effects:
Displayed on HMI TACtouch
Code
T.40 Sensor T4 disconnected
T.41 Sensor T4 short circuit
T.70 Sensor T7 disconnected
T.71 Sensor T7 short circuit
T.80 Sensor T8 disconnected
T.81 Sensor T8 short circuit
TAC control board
ALARM OUTPUT AL dPa OUTPUT
Alarm status /
Manual reset mandatory.
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GB.ESENSA.MO.231025
Text displayed
LED ALARM Fans
ON Stopped
Text displayed
LED ALARM Fans
ON /
We reserve the right to alter specifications.
6.10 TYPE 10 BIS: DRAIN PUMP ALARM
- Conditions:
• Only for ESENSA 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:
Level
3
Code
3
R.10 Condensate tray full
3
3
3
3
ALARM OUTPUT
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.
6.11 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:
Level Code
3 T.50 Sensor T5 disconnected
3
T.51 Sensor T5 short circuit
3
3
ALARM OUTPUT
3
Alarm status
3
We reserve the right to alter specifications.
Displayed on HMI TACtouch
Text displayed
TAC control board
AL dPa OUTPUT LED ALARM
/ ON
Auto reset: yes
Displayed on HMI TACtouch
Text displayed
TAC control board
AL dPa OUTPUT LED ALARM
/ ON
Manual reset mandatory.
GB.ESENSA.MO.231025
Level
3
Fans
Stopped
Level
3
3
Fans
/
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