52
ENG
Hecu CO
2
+0300085EN rel. 2.2 - 07.05.2019
Screen
index
Display Description Serious
alarm
Alarm Delay Reset
ALB15 High suction pressure Suction pressure exceeds a threshold set on Cae24 x Cae25 Auto
ALB16 Low suction pressure Suction pressure below a settable threshold x Cae27 Auto
ALB22 Oil sensor level broken
or disconnected
Oil level sensor faulty or not confi gured
correctly (LT only)
The alarm is activated when neither of the two
sensors is active from DI
x 10 s Auto
ALC01 Alarm 1 compressor 1 Alarm from DI for BLDC compressor set on Cae02 (ge-
neric, overload, high pressure, low pressure, oil)
x Cae04 Auto/manual
ALC02 Alarm 2 compressor 1 Alarm from DI for BLDC compressor set on Cae05 (ge-
neric, overload, high pressure, low pressure, oil)
x Cae07 Auto/manual
ALC26 Alarm 1 parallel compressor Alarm from DI for parallel compressor set on Cbe02
(generic, overload, high pressure, low pressure, oil)
x Cbe04 Auto/manual
ALC27 Alarm 2 parallel compressor Alarm from DI for parallel compressor set on Cbe05
(generic, overload, high pressure, low pressure, oil)
x Cbe07 Auto/manual
ALC51 CO2 level alarm Refrigerant leakage outside of the circuit
signalled by DI
x Hc06 Auto
ALC51 Leak detector alarm Refrigerant leakage in the circuit signalled by DI x Hc05 Auto
ALF01 Fan overload Alarm from DI for one or two fans when fan common
overload is disabled on De05
x De05 Auto/manual
ALG01 Al_Clock Alarm due to problem reading controller clock x
ALG02 Extended memory error Faulty controller alarm x
ALG11 High thermostat 1…5 alarms High temperature (pressure) alarm
for generic function 1 to 5
x Ffa09-13-17-
21-25
Auto
ALG15 Low thermostat 1…5 alarms Low temperature (pressure) alarm
for generic function 1 to 5
x Ffa09-13-17-
21-25
Auto
ALG19 High modulating 1-2 alarms High temperature (pressure) alarm
for generic modulating function 1 or 2
x Ffb08-Ffb14 Auto
ALG23 Low modulating 1-2 alarms Low temperature (pressure) alarm
for generic modulating function 1 or 2
x Ffb09-Ffb15 Auto
ALG27 Generic 1-2 normal alarms Generic alarm 1 or 2 x Ffc07, Ffc09 Auto
ALG28 Generic 1-2 serious alarms Serious generic alarm 1 or 2 x Ffc07, Ffc09 Auto
ALT01 Compressor working hours Operating hours exceeded for the compressor(s)
selected on Cac13
Compressor operating time shown in Cac01
x Not present Manual
ALT07 HPV valve alarm HPV valve alarm from DI settable on Fha04 and HPV
brought to safety position (Fhb10)
x Not present Auto
ALT08 RPRV valve alarm RPRV valve alarm from DI settable on Fha05
and RPRV brought to safety position (Fhb23)
x Not present Auto
ALT15 Low superheat alarm Low SH alarm settable on Cae30 x Cae30 Auto/manual
ALT19 DSH Low liquid fl owback SH less than 0 K and DSH at discharge less
than 10 K for a time set on Cae41
x Cae41 Auto/manual
ALT20 HPV Valve position warning The HPV valve is at an opening percentage higher than
a certain threshold settable on Fhb27
x Fhb27 Auto
ALT21 RPRV Valve position warning The RPRV valve is at an opening percentage higher
than a certain threshold settable on Fhb28
x Fhb28 Auto
ALT17 HPV set point warning
Gas cooler press. too low/high,
deviation from current set point
P_GC is higher or lower than a diff erential set on Fhb17
in relation to the current set point
x Fhb17 Auto
ALT18 High receiver pressure alarm Receiver pressure higher than a settable threshold
(Fhb25)
x Fhb25 Auto
ALW10 Low superheat warning The SH value as shown on Aa01 is less than a
threshold set on Cae30
Warning before the alarm is activated, with a delay that
can be set on Cae30
x Not present Auto
ALW24 Power plus device offl ine BLDC compressor inverter not present
or not connected
x 30-90s Auto
ALW25 Power+ inverter alarm Inverter alarm n.xx; ALW25 indicates the type of alarm
generated by the inverter
x Not present Auto
ALW26 Compressor start failure The diff erential between compressor discharge and
suction pressure does not increase by a certain value
in a set period of time. Minimum variation in pressure
diff erence and time period can be set on Cag50
x Cag50 Auto for 0-9
attempts
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