Hoval DGV-6/30, Руководство по конструкции

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6 Alarms and monitoring
The system monitors itself. All the alarms are registered in the alarm list and displayed by TempTronic RC. Priority A alarms
are also displayed via the collective trouble indicator.
Alarm Priority Cause System reaction Benefit
Gas burner A There is a burner malfunction. The affected unit switches to operating
mode 'Off'.
prevents damage to the
burner
Fresh air
damper
A The fresh air/recirculation air damper is
jammed or its actuator is defective.
The affected unit switches to operating
mode 'Off'.
Avoids loss of energy /
undefined states of
operation.
Filter B The pressure difference for filter monitoring
was exceeded for more than 5 minutes.
– Informs the user of the
necessity of maintenance
work
Isolation B The isolation switch on the unit has been in
the 'Off' position for more than 30 minutes.
– Avoids unintentional
switching off.
Supply air
sensor
B The supply air sensor is defective. The plant operates with the minimum heat
output until the fault is eliminated.
Avoids interruptions of
plant operation.
Fan A A fan motor has overheated. The affected unit switches to operating
mode 'Off'.
Avoids damage to the fan
motor.
70
Control system
Alarms and monitoring