Exhausto EXact2 VEX240 series, Basic Instructions

Page: 100 / 108

ALC extract air damper alarm
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
52 01 4 MD1: No communica-
tion to damper motor. ● Check Modbus cable to and from ALC damper for faulty
mounting.
52 02 4 MD1: Incorrect type of
damper motor. ● Check that the damper motor type and Modbus address (17)
are correct.
52 03 1 MD1: Damper motor
cannot move. ● Check whether ALC dampers have reduced mobility (are
blocked).
ALC alarm
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
54 01 2 Increased rotation
leakage Leakage pressure (diff. pressure) is below 0 Pa. The ALC damper
cannot compensate for the pressure conditions.
● If necessary, contact support.
54 02 2 Diff pressure below 0
Pa for more than 5
min. Leakage may oc-
cur. The unit continues, but there is a risk of leakage.
● Check whether the ALC damper in the extract air is blocked.
54 03 2 Excessive damper ac-
tivity/intermittent fluctu-
ations The unit continues, but there is a risk of the damper motor suffer-
ing overload
● If necessary, contact support.
3005167-2022-02-02
Alarms
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