Specifications

The ON/OFF Function Parameters • 11
ALC Temperature alarms configuration (Ab; rE)
Ab = Absolute temperature: alarm temperature is given by the
ALL or ALU values; rE = Temperature alarms are referred to the
setpoint. Temperature alarm is enabled when the temperature ex-
ceeds the SEt + ALU or SEt- ALL values.
ALU MAXIMUM temperature alarm (ALL to 110°C; ALL to 230°F)
When this temperature is reached, the alarm is enabled after the
ALd delay time.
ALL Minimum temperature alarm (-100°C to ALU; -148 to ALU)
When this temperature is reached, the alarm is enabled after the
ALd delay time.
AFH Differential for temperature alarm re-
covery
(0.1 to 25.5°C; 1 to 45°F)
Intervention differential for recovery of temperature alarm.
ALd Temperature alarm delay (0 to 255 min)
Time interval between the detection of an alarm condition and
alarm signaling.
dAo Exclusion of temperature alarm at start-
up
(from 0.0 min to 23.5 hr)
Time interval between the detection of the temperature alarm
condition after controller power ON and alarm signaling.
CONDENSER TEMPERATURE ALARM
AP2 Probe selection for temperature alarm of
condenser
nP = no probe
P1 = thermostat probe
P2 = evaporator probe
P3 = configurable probe
P4 = probe on Hot Key plug
AL2 Low temperature alarm of condenser (-100 to 150°C; -148 to 302°F)
When this temperature is reached the LA2 alarm is signaled, pos-
sibly after the Ad2 delay.
AU2 High temperature alarm of condenser (-100 to 150°C; -148 to 302°F)
When this temperature is reached the HA2 alarm is signaled, pos-
sibly after the Ad2 del
ay.
AH2 Differential for temperature condenser
alarm recovery
(0.1 to 25.5°C; 1 to 45°F)
Ad2 Condenser temperature alarm delay (0 to 255 min)
Time interval between the detection of the condenser alarm con-
dition and alarm signaling.
dA2 Condenser temperature alarm exclusion
at start up
(from 0.0 min to 23.5 hr, res. 10 min)
bLL Compressor OFF with low temperature
alarm of condenser
n = no: compressor keeps on working
Y = yes: compressor is switched OFF until the alarm is present,
in any case regulation restarts after Ac time at minimum
AC2 Compressor OFF with high temperature
alarm of condenser
n = no: compressor keeps on working
Y = yes: compressor is switched OFF till the alarm is present, in
any case regulation restarts after Ac time at minimum
AUXILIARY RELAY
tbA Alarm relay silencing (with oA1 = ALr) n = silencing disabled: alarm relay stays ON until alarm condition
lasts
y = silencing enabled: alarm relay is switched OFF by pressing a
key during an alarm
Code Parameter Function
Table 7-1 - List of Parameters