23
Alarm messages
Message
Meaning
Alarm: 1
Unit with no cooling gas - permanent alarm
Alarm: 2
Stoppage for max cooling pressure - permanent alarm
Alarm: 4
Stoppage for compressor high temperature
Alarm: 8
BUS communication error
Alarm: 32
Stoppage for high temperature of delivery water
Alarm: 64
Stop of room delivery fan
Alarm: 128
Stop of ejection fan
Alarm: 256
Anti-freezing protection intervention – permanent alarm
Should a permanent alarm turn on, the unit will stop and will not restart until the alarm is
deleted by unplugging the machine. An exception is made for the anti-freezing alarm (128)
where the user can reactivate the unit by changing the current mode: for example, if the
machine was in the “exchange” mode when the alarm was set off and there is no longer a
freezing risk, just enter the “integration” input to restart the unit.
The other alarms are self-deleted when the related issue is solved. The control panel displays
only one message; in case of multiple alarms, the displayed message will show a number
equivalent to the sum of the numbers of the corresponding alarms. Example: failure number 34
corresponds to failure 32 plus failure 2.
When there is an alarm and a failure, the two messages flash alternatively on the display.
Whenever there are alarms or failures, the unit enters a provisional or partial operational
mode to provide, whenever possible, the residual functions without compromising its safe
use.
MAINTENANCE
Periodical maintenance consists of cleaning the air filters. To remove and clean the filters:
-
Disconnect and remove the filter lid from the opposite side of the hydraulic and electric
supply;
-
Turn the metal plates that block the filters;
-
Remove and clean the filters with water and soap or blow them out with compressed air.
