SCM Cuno 2 Aqua - Page 32

EN
OEM Manual – CUBO
2
AQUA
Pag. 30-EN UMT/WG T BT Rev3.0 – 08/10/2021
Mask
index
Topic
Description
Serious
alarm
Normal
alarm
Action
Delay
Reset
alarm threshold settable by mask
Fhb28
made in mask Cbe42 and
Fhb28)
ALW10
SUPERHEAT
Warning low superheat.
Suction SH of MT/LT compressor
lower than alarm threshold (set on
mask Cae30). No delay is used to
issue the warning.
x
No action (it is just a
warning)
No delay
Automatic
ALW24
LT COMPRESSOR
Power plus device offline.
No communication between HECU
controller and PSD (Inverter for
compressor BLDC)
x
Shut Off compressor
No delay
Automatic
ALW25
Power+ inverter alarm.
Generic Alarm of the PSD (LT/MT
compressor). More details about
the alarm code of the inverter is
reported in the same mask.
x
Shut Off compressor
No delay
Automatic
ALW26
Compressor start failure.
Delta Pressure between suction and
discharge does not increase after
the compressor start
x
Compressor shut off.
Compressor restarts after a
delay if this alrm does not
occur more than 5 times in
60 minutes
Settable
by mask
Cag51
Automatic/
manual (if
it occurs
more than
5 times in
60
minutes)
ALW27
Envelope alarm.
Compressor is working out of
admitted envelope. The current
operating zone is reported in the
same mask
x
Shut Off compressor
Settable
by mask
Cag55
Automatic
ALW28
High discharge gas temperature.
Discharge temperature measured
by the probe is higher than the
Alarm threshold set on mask Hb02
x
Shut Off compressor
No delay
Automatic
ALW29
Compressor Low pressure
differential (insufficient lubrication).
Low delta pressure between suction
pressure and discharge pressure
x
No Action
Settable
by mask
mask
Cag55
Automatic
ALW30
Inverter model not compatible
(Power+ only allowed).
The inverter model is not
compatible with the compressor
size configured on mask Cag12
x
Compressor does not start
No delay
Automatic
ALP01
PARALLEL COMPRESSOR
Power + n.2 offline (Parallel Comp).
No communication between HECU
controller and PSD (Inverter for
compressor BLDC) of Parallel
Compressor
x
Shut Off Parallel
compressor
No delay
Automatic
ALP02
Alarm Power+ Parallel Compressor.
Generic Alarm of the PSD (Parallel
compressor). More details about
the alarm code of the inverter is
reported in the same mask.
x
Shut Off Parallel
compressor
No delay
Automatic
ALP03
Parallel compressor start failure.
Delta Pressure between suction and
discharge does not increase after
the compressor start
x
Compressor shut off.
Compressor restarts after a
delay if this alrm does not
occur more than 5 times in
60 minutes
Settable
by mask
Cbg51
Automatic/
manual (if
it occurs
more than
5 times in