1592015820 User manual IC260_261L_D DUO FW1.9 rel. 1.0
Pag. 111 of 149
ALti: low air ambient temperature (Air / Air unit only)
Label on alarm
visualization menu
ALti
(low temperature value of the evaporator air inlet)
Origin
Chiller mode: CF01=0 and evaporator inlet NTC probe lower than AL26 for
AL28 seconds.
Heat pump: CF01=0 and evaporator inlet NTC probe lower than lower than
AL33 forAL36 seconds
In stand-by or remote OFF: the evaporator inlet NTC probe lower than the
lowest value compared between AL28 and AL36.
Reset
Chiller: evaporator inlet NTC probe higher than AL26 + AL27(differential).
Heat pump: evaporator inlet NTC probe higher than AL33 + AL34 (differential).
n stand-by or remote OFF: the evaporator inlet NTC probe higher than
AL26+AL27 or AL33+AL34.
Restart
Automatic
Symbol
On the display the symbol
is blinking
Action
Alarm Relay + and buzzer on
AEP1 - AEP2 Evaporator pumps / Supply fan maintenance request
Label on alarm
visualization menu
AEP1
(Main water pump)
AEP2
(Support water pump)
Activation
Load running hours > counter setpoint for that load
Reset
Running hour reset (Hour label in Menu function)
Restart
Manual
Symbol
On the display the symbol
is blinking
Actions
Alarm relay and buzzer activated
REGULATIONS
Actions
Only signalling
Loads
Not modified
The parameters CO34 / CO35 define the hour set counters for the condenser water pump / Support water
pump.
They establish the load running hours limit of the pump/s or the supply fan to give a maintenance signalling.
If one of these parameters is equal to 0 the maintenance signalling of that load is disabled but the running
hours counter remains active.
ACP1 - ACP12 Condenser pumps maintenance request
Label on alarm
visualization menu
ACP1
(main water pump)
ACP2
(support water pump)
Activation
Load running hours > counter setpoint for that load
Reset
Running hour reset (Hour label in Menu function)
Restart
Manual
Symbol
On the display the symbol
is blinking
Actions
Alarm relay and buzzer activated
REGULATION
Actions
Only signalling
Loads
Not modified
B1HP - B2HP High Pressure switch circuit 1 and 2
Label on alarm
visualization menu
b1HP
(high pressure switch circuit #1)
b2HP
(high pressure switch circuit #2)
Reason
The unit is running and the digital input of the high pressure switch is active
Reset
Digital input not active