Zehnder Unitair Compo Anleitung Seite 37

12.2 Fan running alarm
Text displayed
FAN ALARM
CHECK POWER SUPPLY AND CABLES CONNECT.
THEN PRESS ON RESET.
IF NOT SOLVED REPLACE CABLE
OU CB OU MOTOR
12.3 Data error alarm
Text displayed
DATA ERROR
12.4 Alarm for impossibility to execute the airflow assignment
- CA/LS alarm ( CA or LS mode):
The airflow requested cannot be maintained at constant level:
2 different situations can occur:-
- The airflow requested cannot be held constant because the counterpressure on fan is too high:
Text displayed
CA or LS ALARM
AIRFLOW TOO LOW.
REDUCE PRESSURE
ON THAT FAN.
- The airflow requested cannot be held constant because the airflow is too low for the working range of the fan:
Text displayed
CA or LS ALARM
AIRFLOW TOO HIGH
MINIMUM MOTOR
LIMIT ACHIEVED
- CP Alarm (mode CPf or CPs):
The requested pressure cannot be held constant.
- The minimum airflow of the fan is reached and calculated pressure is still superior to requested pressure:
Text displayed
CPf or CPs ALARM
PRESSURE TOO HIGH
MINIMUM AIRFLOW ACHIEVED
- The maximum airflow of the fan is reached and calculated pressure is still inferior to requested pressure:
Geafficheerde tekst
CPf or CPs ALARM
PRESSURE TOO LOW
MAXIMUM AIRFLOW
ACHIEVED
Description
Describes a fan function default. Check wiring, connections and 230V supply.
(text is displayed on several successive screens).
Alarm LED is lit, relay R1 is closed and relay LED is also lit.
Check wiring, connections and 230V supply. Otherwise the problem can be caused by defecti wire,
control circuit or motor
Description
This alarm indicates an error in the data of the control circuit.
If this error occurs, Alarm LED is lit, relay R1 is closed and relay LED is lit.
To solve this problem:
- Make a « factory reset » using the advanced setup (to activate press keys SETUP and ENTER simul-
taneously until text "ADVANCED SETUP" appears on the screen. Select "factory reset" and press
enter.
- If not solved circuit has to sent back for a factory reprogramming.
Description
This alarm means the requested airflow cannot be reached. (text is displayed on several successive screens).
Requested airflow cannot be held constant because the counterpressure on the fan is too high.
- It is activated if actual airflow < 93% of requested airflow and
- Deactivated once airflow reaches value > 97% of requested airflow
Description
This alarm signals that The airflow requested cannot be held constant because the airflow is too low
for the working range of the fan.
Activated when airflow is > 112% of requested airflow
Deactivated when airflow < 108% of requested airflow .
The text appears on different successive screens.
Description
This alarm states that the minimum airflow of the fan is reached and calculated pressure is still superior to
requested pressure. The text appears on different successive screens.
Activated when pressure is > 112% of requested airflow
Deactivated when pressure < 108% of requested airflow.
Beschrijving
This alarm states that the maximum airflow of the fan is reached and calculated pressure is still inferi-
or to requested pressure.
The text appears on different successive screens.
Activated when pressure is < 93% of requested airflow
Deactivated when pressure >97% of requested airflow.
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