Swegon GLOBAL PX User Manual

49
Operation and maintenance instructions
- Conditions:
- Causes:
•
One or more of the T° sensors T1/T2/T3/T4 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.
- Eects:
- Conditions:
•
Only with water heating coil (IBA or EBA) option
- Causes:
• T° sensor T7 located on the coil and connected to the TAC circuit is defective (open or short circuit) or not connected.
This is used to prevent frosting of the internal or external heating coil. In this case, as a safety measure, the 3-way valve is
opened and the circulator contact is closed.
- Eects:
8.8 TYPE 9: ALARM INDICATING A T° SENSOR T1/T2/T3/T4 FAILURE
8.9 TYPE 10: ALARM INDICATING FAILURE ON T° SENSOR T7
TAC control board
ALARM OUTPUT AL dPa OUTPUT LED ALARM Fans
Alarm status / ON Stopped
Manual reset mandatory.
TAC control board
ALARM OUTPUT AL dPa OUTPUT LED ALARM Fans
Alarm status / ON /
Manual reset mandatory.
Displayed on HMI TACtouch
Code Text displayed Level
T.10 Sensor T1 disconnected 3
T.11 Sensor T1 short circuit 3
T.20 Sensor T2 disconnected 3
T.21 Sensor T2 short circuit 3
T.30 Sensor T3 disconnected 3
T.31 Sensor T3 short circuit 3
T.40 Sensor T4 disconnected 3
T.41 Sensor T4 short circuit 3
Displayed on HMI TACtouch
Code Text displayed Level
T.40 Sensor T7 disconnected 3
T.41 Sensor T7 short circuit 3

Swegon GLOBAL PX Specifications

General

Brand	Swegon
Model	GLOBAL PX
Category	Air Handlers
Language	English