3004525-2017-06-28 5.4 List of alarms Alarms Unit Fault code Category Main Control VEX/CX Alarm description Troubleshooting (See appendix 1: "Simplified diagrams" for the positioning of dampers, xx yy z sensors, air directions, etc.) 00 01 1 Control is powered Indicates when control is powered 00 02 1 Unknown reboot of control ● Unknown fault, call service 00 03 1 A watchdog rebooted control ● Unknown fault, call service 00 04 1 Software rebooted con- The software has rebooted the control system. trol 00 05 1 User rebooted control The user has rebooted the control system. 00 06 1 Power supply voltage Reboot of control due to voltage drop drop rebooted the control system 00 16 1 "Manual" alarms reset The user has reset the alarms by user Device Fault code Category Pressure transmitter 1 Alarm description xx yy z 04 01 4 No modbus communi- cation to pressure transmitter 04 02 4 Calibration fault 04 03 1 Calibrate pressure transmitter 04 04 1 Pressure transmitter using old calibration values 04 05 4 Pressure transmitter not calibrated Troubleshooting (See appendix 1: "Simplified diagrams" for the positioning of dampers, sensors, air directions, etc.) ● Check the modbus cable between the connection board (EXact)/main board (EXact2) and MPT1. ● Check modbus cable for faults from MPT1 to the other units ● Re-calibrate ● If the problem continues, MPT1 must be replaced Calibrate MPT1 When the unit starts up this information is displayed. It does not necessarily mean that the pressure transmitter has to be calibrated. ● Check if the MPT is out of calibration in Menu 8.4 and recalibrate if required ● Set the VEX/CX to "OFF" in the user menu and open the doors. Next calibrate the MPT in Menu 8.4. 71/112
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