Motion sensor PIR
Unit
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of dampers,
sensors, air directions, etc.)
xx yy
z
24 01
2
No modbus communi-
cation to PIR module
● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and PIR module.
● Check the modbus cable from the MCCW module to the other
units for faulty wiring.
● Check the DIP-switch settings in the PIR module, refer to MIO
module instructions or PIRB-AS instructions.
24 02
2
PIR input via BMS se-
lected and BMS has
not been configured.
● Configure BMS.
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Alarms
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