Exhausto EXact2 VEX240 series, Basic Instructions

Page: 68 / 108

Pressure transmitter 1
Unit
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the location of dampers, sen-
sors, air directions, etc.)
xx yy z
04 01 4 No modbus communi-
cation to pressure
transmitter ● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and MPT1.
● Check modbus cable for faults from MPT1 to the other units
04 02 4 Calibration fault ● Re-calibrate
● If the problem continues, MPT1 must be replaced
04 03 1 Calibrate pressure
transmitter Calibrate MPT1
04 04 1 Pressure transmitter
using old calibration
values When the unit starts up this information is displayed. It does not
necessarily mean that the pressure transmitter has to be calibra-
ted.
● Check if the MPT is out of calibration in menu 8.4 and recali-
brate if required
04 05 4 Pressure transmitter
not calibrated ● Set the VEX/CX to "OFF" in the user menu and open the
doors. Next calibrate the MPT in menu 8.4.
Pressure transmitter 2
Unit
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the location of dampers, sen-
sors, air directions, etc.)
xx yy z
05 01 4 No modbus communi-
cation to pressure
transmitter ● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and MPT2.
● Check modbus cable for faults from MPT2 to the other units
05 02 4 Calibration fault ● Re-calibrate
● If the problem continues, MPT2 must be replaced
05 03 1 Calibrate pressure
transmitter Calibrate MPT2
05 04 1 Pressure transmitter
using old calibration
values When the unit starts up this information is displayed. It does not
necessarily mean that the pressure transmitter has to be calibra-
ted.
● Check if the MPT is out of calibration in menu 8.4 and recali-
brate if required
05 05 4 Pressure transmitter
not calibrated ● Set the VEX/CX to "OFF" in the user menu and open the
doors. Next calibrate the MPT in menu 8.4.
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Alarms
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