Alarm Signals; Silencing Buzzer/Alarm Relay Output; Alarm Recovery; Other Messages - Emerson Dixell XR75CX Series Installation And Operation Manual

14 Alarm Signals

Message Cause
P1 Room probe failure
Evaporator probe
P2
failure
P3 Third probe failure
Fourth probe
P4
failure
Maximum
HA
temperature alarm
Minimum
LA
temperature alarm
Condenser high
HA2
temperature
Condenser low
LA2
temperature
dA Door open
EA External alarm
Serious external
CA
alarm (i2F=bAL)
Pressure switch
CA
alarm (i2F=PAL)
Real time clock
rtF
board failure
Table 14-1 - Alarm Signals
14.1. Silencing Buzzer/Alarm
Relay Output
f tbA = Y, the buzzer and the relay are silenced by 
I
pressing any key.
If tbA = n, only the buzzer is silenced while the alarm relay
is ON until the alarm condition recovers.

Silencing Buzzer/Alarm Relay Output

14.2. Alarm Recovery

Probe alarms P1, P2, P3, and P4 start some seconds after
the fault in the related probe; they automatically stop some
Outputs
seconds after the probe restarts normal operation. Check
connections before replacing the probe.
Compressor output
acc. to par. Con and
Temperature alarms HA, LA, HA2, and LA2 
CoF
automatically stop as soon as the temperature returns to
normal values.
Defrost end is timed
Alarms EA and CA (with i1F = bAL) recover as soon as
the digital input is disabled.
Outputs unchanged
Alarm CA (with i1F = PAL) recovers only by switching
OFF and ON the device.
Outputs unchanged

14.3. Other Messages

Outputs unchanged.
Outputs unchanged.
It depends on the
AC2 parameter
It depends on the
bLL parameter
Compressor restarts
Output unchanged.
Table 14-2 - Additional Display Messages
All outputs OFF.
All outputs OFF
Alarm output ON;
Other outputs
unchanged;
Defrosts according
to par. idF. Contact
the service.
Message
Pon Keyboard unlocked
PoF Keyboard locked
In programming mode:
No parameter is present
noP
On the display or in dP2, dP3, dP4:
The selected probe is not enabled
Output
Alarm Signals • 17