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7.3.1 ALARMS OF THE INVERTER ESTUCS900
The inverter is equipped with a LED, which in case of alarms, blinks in different time intervals
depending on the type of alarm detected. The Alarm output is open collector type, open in
case of alarm (V
24V, l
max
ALARM TYPES
LED INDICATIONS ALARM INDICA-
Over temperature Blink Alarm led
3 s ON - 0,5 s OFF
Over voltage
Undervoltage
Over current
Over Load
Blink Alarm led
0,5 s ON - 0,5 s OFF
Safety control
Stop
Alarm Led ON
permanently
7.4 EXTRAORDINARY MAINTENANCE
All operations of extraordinary maintenance, such as regulation or the re-
placement of the electric components (motor, control, valves, etc.) must be
executed by qualified personnel only.
Before proceeding with any operation of extraordinary maintenance make
sure that the unit has been disconnected from the power supply.
In order to get access to the internal components of the cassette fancoil it is necessary to
operate as follows:
•
remove the air intake grill, loosening the four fixing screws;
5mA sink).
max
TIONS DIP4=OFF
Blink Alarm output
3 s ON - 0,5 s OFF
Blink Alarm output
0,5 s ON - 0,5 s OFF
Alarm Led Out ON
permanently
Alarms on inverter
ACTIONS
NOTES
Motor OFF
Auto restart Alarm. After about
1,5 min of persistent condition
the Alarm is set permanently: led
ON and Alarm ON. System is in
STOP mode.
Speed reduction Power limiting
Temperature limiting
Motor OFF
Set 0V on input to reset the alarms
EN
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