Alarm Types; Service Alarm - aldes DFE Série Manuel D'installation Et De Maintenance

4.8 Alarms

4.8.1 Alarm types

Type 1: Alarm indicating a fan failure (1).
This alarm indicates a failure of fan Fx.
This problem is usually caused by the motor. If not, the failure can be caused by an internal cable or a control.
See 1 in table below.
Type 2: Alarm on the pressure variation (CA and LS modes only).
This alarm indicates a pre-established pressure level has been reached on fan Fx. See 2 in table below.
Type 3: Alarm indicating a problem while initializing reference pressure for a pressure alarm (1).
3 possibilities (See 3 in table below):
- Actual airflow < requested airflow: The requested working point is 'too high' (too much pressure) for the maximal
available pressure at the requested airflow for this fan.
- Actual airflow > requested airflow: the nominal airflow requested to initialize the pressure alarm cannot be
reached because the lower limit of the fan's operating zone has been reached.
- Very unstable pressure (pumping).
See 3 in table below.
Pa cannot be identified and the fans are stopped. Press 'RESET' using 'SETUP' on the RC, or with the 'RESET'
réf
key on the CBr.
- If it occurs during initializing an alarm pressure 2 options: 1. No action is taken: the control will operate without
pressure alarm 2. Corrective action is taken (change the working point to one well located in the working zone of the
fan, by reducing the pressure system, modifying the nominal airflow,) and restart the setup operation....
- If it occurs during initializing of the assignment pressure in CP mode: A corrective action must be taken (change
the working point to one well located in the working zone of the fan, by reducing the pressure system, modifying the
nominal airflow,) and restart the setup operation....
Type 4: Alarm indicating the system cannot fulfill the assignment (1).
The assignment (keeping a certain airflow or a certain pressure constant) cannot be fulfilled because the upper or
lower limit of the fan's working zone has been reached. See 4 in table below.
Type 5: Alarm indicating a data failure in the control circuit
Crucial data from the circuit board has been lost. Try a TOTAL RESET of the data using the advanced setup (see
website). If still not solved send the defect RC for reprogramming. See 5 in table below.
Type 6: Fire Alarm with an external contact connected to a fire detection system
See 6 in table below and paragraph 4.9.
Type 7: Alarm indicating maintenance is expected. (for configuration see "advanced setup)
SERVICE ALARM: indicates the fan operating time (in hours) has exceeded a certain limit set during the
configuration..
STOP FAN: indicates the fan operating time (in hours) has exceeded a certain limit set during the configuration. This
alarm stops the fans. See 7 in table below.
Type 8: Alarm indicating a communication breakdown between the RC and the CBr.
Verify if the wirings are correct. See 8 in table below.
Type 9: Alarm indicating a T° sensor S1/S2/S3 failure .
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