SCM Cuno 2 Aqua, Manual

Page: 32 / 138

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
SU
PE
R
H
EA
T
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
C
O
MP
RE
SSOR
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
PA
R
A
LL
EL
CO
MP
RE
SSOR
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