35
cyberair 3pro cw2 original instructions
© STULZ GmbH – all rights reserved EN/06.2017/G18D
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 measeured
values in selected zone.
Check room on Hotspots or chilled air zones,
moist zones.
2. sensor defective.
Check measured value with an external measu
-
ring instrument.
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.
Check measured value with external thermo
-
meter, hygrostat, pressure gauge.
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
