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 simultaneously 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.
4. Alarm for impossibility to execute the airflow assignment
2 different situations can occur :
- The airflow requested cannot be held constant because the counterpressure on fan is too high :
CA ALARM
AIRFLOW TOO LOW.
REDUCE PRESSURE
ON THAT FAN.
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
- The airflow requested cannot be held constant because the airflow is too low for the working range of the fan:
CA ALARM
AIRFLOW TOO HIGH
MINIMUM MOTOR
LIMIT ACHIEVED
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.
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