Temperature sensor MIO-TS
Device
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of dampers,
sensors, air directions, etc.)
xx yy
z
22 01
2
No modbus communi-
cation to MIO-TS mod-
ule
● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and MIO module.
● Check the modbus cable from the MIO module to the other
units for faulty wiring.
● Check the DIP-switch settings in the MIO module, refer to MIO
module instructions.
22 02
2
Temperature sensor
disconnected
● Check the sensor's resistance complies with the actual tem-
perature. See temperature resistance table appendix 2.
● If the sensor resistance has significantly changed in value, it
should be replaced.
22 03
2
Temperature sensor
short-circuited
● Check the sensor's resistance complies with the actual tem-
perature. See temperature resistance table appendix 2.
● If the sensor resistance has significantly changed in value, it
should be replaced.
Humidity sensor RH
Device
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of dampers,
sensors, air directions, etc.)
xx yy
z
23 01
2
No modbus communi-
cation to MIO-RH mod-
ule
● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and MIO module.
● Check the modbus cable from the MIO module to the other
units for faulty wiring.
● Check the DIP-switch settings in the MIO module, refer to MIO
module instructions.
23 02
2
Humidity level is below
2% – RH sensor may
be defective
● Humidity sensor may be defective and should be replaced
23 03
2
RH input via BMS se-
lected and BMS has
not been configured.
● Configure BMS.
3006401-2022-05-04
Alarms
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Summary of Contents for EXact2 HMI2-350-TOUCH
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