SCM CUBO2 AQUA - Hecu Alarm; List of Alarms

EN
OEM Manual – CUBO
2
AQUA
Pag. 26-EN UMT/WG T MT Rev3.0 – 08/10/2021
26
11 List of alarms
When an alarm occurs in the controller the alarm icon in the user display will be switched ON and it will
start to blink ( ).
To get more alarm details you should check the alarm masks available in the display.
These mask contains several information (date and time, description, suct. and disch. Pressure, codes)
that could help the user to identify the possible alarm reason and to understand which checks to
perform.
Here below some details about how to interpret the different codes shown in the alarm masks.
 Highlighted in RED the main alarm reference  Check the HECU alarm table to get more details
 Highlighted in BLUE the PSD (POWER+) alarm code  Check the PSD (Power+) alarm table to get
more details
 Highlighted in GREEN the Envelope Zone that caused a compressor shut-off  Check the
Envelope Zone table to get more details (at page 33)
11.1 Hecu alarm
In the below table we reported a quick description about the Condensing Unit alarm with the main action
made by the controller.
The alarm Index to refer is the one reported in the alarm masks or in the alarm logs (please find an
example in the below picture. The Mask Index is the one highlighted in red).
Mask
index
Topic
Description
Serious
alarm
Normal
alarm
Action
Delay
Reset
ALU02
PROBES
Regulation probes missing.
One of the main probe is missing or
wrong configured: P_suc, P_GC,
T_out_GC, P_receiver or
Pparallel_Suct
x
Shutdown Unit
No delay
Automatic
ALA01
Discharge temperature probe
broken or disconnected.
Discharge temperature probe could
be broken, disconnected or not
properly configured
x
No action on the regulation
The function that reduce
the compressor speed to
prevent High Discharge
temperature will be
disabled (mask Hb02 and
Hb03)
No delay
Automatic