1592015820 User manual IC260_261L_D DUO FW1.9 rel. 1.0
Pag. 141 of 149
AL 2
Low pressure alarm delay from digital input after compressor stop if the low pressure
switch is used for the pump down.
AL02= 0 low pressure alarm not enable with compressor OFF
AL02
≠ 0 low pressure alarm enable after AL02 time with compressor OFF
0
250
Sec
10 Sec
AL 3
Low pressure alarm setpoint from analogue input
-30.0
-22
0.0
0
70.0
158
50.0
725
°C
°F
bar
psi
Dec
int
Dec
int
AL 4
Low pressure alarm differential from analogue input
0.1
0
0.0
0
25.0
45
14.0
203
°C
°F
bar
psi
Dec
int
Dec
Int
AL 5
Maximum number of low pressure events from digital/analogue inputs:
Manual reset if AL05 = 0
Automatic reset if AL05 =16
From automatic to manual reset if AL05= 1..15
0
16
AL 6
Low temperature/pressure alarm during defrost
0= Not enabled
1= Enabled
0
1
AL 7
Low temperature/pressure alarm delay during defrost
0
250
Sec
AL 8
Low temperature/pressure alarm with unit in OFF or stand – by:
0 = Not enabled
1= Alarm enabled
0
1
High Alarm
AL 9
High temperature/pressure alarm from analogue input
-30.0
-22
0.0
0
70.0
158
50.0
725
°C
°F
bar
psi
Dec
int
Dec
int
AL 10
High temperature/pressure alarm differential from analogue input
0.1
0
0.0
0
25.0
45
14.0
203
°C
°F
bar
psi
Dec
int
Dec
int
Oil Alarm
AL 11
Low oil pressure / level delay from digital input
0
250
Sec
AL 12
Minimum time for low oil pressure / level from digital input activation in normal working
condition.
0
250
Sec
AL 13
Maximum number of low oil pressure/level events:
Always manual reset if AL13= 0
Always automatic reset if AL13 =16
From automatic to manual reset if AL13 = 1..15
0
16
Flow alarm
AL 14
Configuration
0= Not enabled
1= Only for chiller
2= Only for heat pump
3= For both chiller and heat pump
0
3
AL 15
“Flow switch / supply fan overload” alarm delay after pump/fun activation.
0
250
Sec
AL 16
Flow switch time activation before blocking evaporator water pump
0
250
Sec
AL 17
“Flow switch / supply fan overload” activation time to generate the alarm
0
250
Sec
AL 18
“Flow switch / supply fan overload” de-activation time to reset the alarm
0
250
Sec
Compressor overload alarm
AL 19
Compressor overload alarm delay after compressor start-up
0
250
Sec
AL 20
Maximum number of compressor overload alarm events
Always manual reset if AL20 = 0
Always automatic reset if AL20 =16
From automatic to manual reset if AL20 =1..15
0
16
Pump down alarm
AL 21
Maximum number of pump down alarm events per hour in stop condition. After this
number the alarm is logged, displayed and signalled with alarm relay + buzzer.
Manual reset if AL21 = 0
Automatic reset if AL21 =16
From automatic to manual reset if AL21 =1..15
0
16
AL 22
Maximum number of pump down alarm events per hour in start-up condition. After this
number the alarm is logged, displayed and signalled with alarm relay + buzzer.
Always manual reset if AL22 = 0
Always automatic reset if AL22 =16
From automatic to manual reset if AL21 =1..15 and parameter AL23 config.
0
16
AL 23
Select if the pump down alarm must change from automatic to manual reset:
0= Always automatic reset
1= Manual reset after AL21 alarm events
0
1
Anti-freeze alarm in Chiller mode
AL 24
Minimum antifreeze setpoint in chiller (from –30 °C to AL24)
-30.0
-22
AL26
°C
°F
Dec
int
AL 25
Maximum antifreeze setpoint in chiller (from AL24 to 70 °C)
AL26
70.0
158
°C
°F
Dec
int
AL 26
Setpoint temperature for low anti-freeze alarm, low ambient temperature (air/air), low
temperature air outlet (air/air). From AL24 to AL25.
AL24
AL25
°C/°F
Dec/int
AL 27
Differential of alarm reset in Chiller mode for anti-freeze, low ambient air temperature
or low outlet air temperature alarms.
0
0
25.0
45
°C
°F
Dec
int
AL 28
Alarm delay for anti-freeze, low ambient air temperature or low outlet air temperature.
The temperature must be lower than AL26 for this time duration before having the
alarm event.
0
250
Sec
