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Cyberair mini Cw originaL instruCtions
EN/06.2021/G23 © STULZ GmbH – all rights reserved
Alarm message
Cause for alarm
Cause
elimination
Airflow failure
Differential pressure for airflow
switch has triggered.
1. Fan motor defective. Fan speed
too low.
Check fan motor on voltage continuity and cur
-
rent consumption.
Check if fan is mechanically blocked.
2. Air filter extremely clogged.
Check air filter.
3. Hoses to the airflow monitor dirty
or kinked.
Clean hoses and check whether they are kinked
.
Sensor # error
The tolerance to the average
value adjustable in the control
-
ler has been exceeded.
1. Big difference of measured val
-
ues in selected zone.
Check room on Hotspots or chilled air zones,
moist zones. Check measured value with an
external measuring instrument.
2. sensor defective.
Replace defective sensor.
Sensor # defective
The measured voltage/current
is outside the range defined in
the controller.
1. electrical connection defective.
Check connections.
2. sensor cable defective.
Check cable on continuity.
3. sensor defective.
Replace defective sensor.
Depending on the option configured in the controller further alarm messages exist.
# stands for a number in case of several components of the same kind.
8. Malfunction
