54
ENG
Hecu
C
O
2
+0300085EN rel. 2.2 - 07.05.2019
Screen
index
Display
Description
Serious
alarm
Alarm
Delay
Reset
ALW27
Envelope alarm
Compressor operation outside of the envelope
x
Cag55
Auto
ALW28
High discharge gas temperature
Compressor discharge temperature exceeds a
threshold set on Hb02
x
Not present
Auto
ALW29
Compressor low pressure diff erential
(insuffi
cient lubrication)
Diff erence between BLDC compressor
suction and discharge pressure too low
x
Cag55
Auto
ALW30
Inverter model not compatible
(Power+ only)
Selected inverter model not compatible with the type
of compressor set on Cag02
x
Not present
Auto
ALW37
Alarm stores (generic)
Generic alarm evaporator 1 to 5
ALW37 shows the evaporators with active alarms
x
Not present
Auto
ALW40-53-66-
79-92
Store 1…5 offl
ine
Evaporator 1 to 5 confi gured by Hecu but MPXPRO/UC
device not connected via Fieldbus or offl
ine
x
Not present
ALW41-54-67-
80-93
Store 1…5: Low temperature alarm
Low temperature alarm for the probe set on
MPXPRO/UC evaporator 1 to 5
x
from MPXPRO/
UC (Ad)
Auto
ALW42-55-68-
81-94
Store 1…5: High temperature alarm
High temperature alarm for the probe set on
MPXPRO/UC evaporator 1 to 5
x
from MPXPRO/
UC (Ad)
Auto
ALW43-56-69-
82-95
Store 1…5: Low temperature alarm 2 Low temperature alarm for the probe set only on MPX-
PRO evaporator 1 to 5
x
from MPXPRO
(Ad2)
Auto
ALW44-57-70-
83-96
Store 1…5: High temperature alarm 2 High temperature alarm for the probe set only on
MPXPRO evaporator 1 to 5
x
from MPXPRO
(Ad2)
Auto
ALW45-58-71-
84-97
Store 1…5: Defrost timeout
End defrost procedure by timeout signal, evaporator
1 to 5
x
from MPXPRO/
UC (dP1, dP2)
Auto
ALW46-59-72-
85-98
Store 1…5: Low superheat alarm
SH evap. 1 to 5 below the threshold; control is activated
to rapidly close the valve and prevent liquid from
returning to the compressor
x
from MPXPRO
(P9)
Auto
ALW47-60-73-
86-99
Store 1…5:
Low suction temperature alarm
Suction temperature (t_gs) 1 to 5 below threshold, with
the risk of liquid returning to the compressor
x
from MPXPRO
(P12)
Auto
ALW48-61-74-
87-ALZ00
Store 1…5: MOP alarm
Evap. pressure in cabinet 1 to 5 above the threshold
(parameter PM1 on MPXPRO); control is activated
(parameter PM2) to rapidly close the valve
x
from MPXPRO
(PM3)
Auto
ALW49-62-75-
88-ALZ01
Store 1…5: LOP alarm
Evap. pressure in cabinet 1 to 5 below the
threshold (parameter PL1 on MPXPRO); control is acti-
vated (parameter pL2) to rapidly open the valve
x
from MPXPRO
(PL3)
Auto
ALW50-63-76-
89-ALZ02
Store 1…5:
stepper driver communication error
Incorrect setting of parameter P1 on MPXPRO 1 to 5,
which must be set to 2 (management of Carel E2V
electronic valve is required)
x
from MPXPRO
(P1)
ALW51-64-77-
90-ALZ03
Store 1…5: stepper motor error
Electronic valve not properly installed
x
ALW52-65-78-
91-ALZ04
Store 1…5: installation or confi g
problems on EEV driver
Valve 1 to 5 end of travel alarm.
Valve blocked alarm ("Blo") signalled on MPXPRO
x
ALZ06
Liquid return from MPX 1…5
offl
ine during fl ush
MPX 1 to 5 offl
ine alarm during washing
x
ALZ07
Warning: no DO confi gured for
vapour injection fl ow in BLDC
No DO confi gured for the vapour injection function
for BLDC compressor in LT applications or for parallel
compressor, set on Fda07
x
Not present
Auto
ALZ08
Carel EXV valve not confi gured on
MPXPRO
The unit will switch off in 10 hours
Valve managed by MPXPRO/UC is not a Carel E2V
electronic valve.
x
ALP01
Power + n.2 (n.3) offl
ine
Parallel compressor inverter not present
or not connected
x
30-90s
Auto
ALP02
Power+ n2 (n.3) alarm
Inverter no. 2 (no. 3) alarm n.xx
Alarm screen ALW25 indicates the type of alarm gener-
ated by the inverter
x
Not present
Auto
ALP03
Parallel compressor start failure
The diff erential between discharge (P_GC)
and suction pressure for the parallel compressor
(P_ric) does not increase by a certain value in a
period of time set on Cbg50
x
Cbg50
Auto for 0 to 9
attempts
Содержание Hecu CO2
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