dixell xc440c, Instruction Manual

Page: 24 / 28

Operating instructions cod. 1592001300
1592001300 XC440C gb r1.0 07.06.2004.doc rel. 1.0 Page
24 / 28
Action
The alarm is signalled with standard action. The outputs are unchanged.
18.2 Alarm muting
Press any buttons to silence the buzzer during an alarm condition.
Hold pressed for more than 3 seconds switch off the alarm relay during an alarm condition
18.3 Alarm conditions – summary table
Code Description Cause Action Reset
P1 P1 probe failure
alarm Probe failure or out of
range The compressors
are activated
according to the
SPr or PoPr
parameters. Automatically as soon as the probe restarts
working.
EA1
EA2
EA3
EA4 Load safeties
alarm Safeties
compressor/fan input
activation.
NOTE: with step
compressors 1 input
for each compressor
has to be used. the corresponding
load is turned off.
(with step
compressors all
relays referred to
the input are
disabled). Recovery depends on ALMr parameter:
With ALMr = no The instrument restart the
standard operating mode when the input is
disabled.
With ALMr = yES manual recover for the
alarms of compressors and fans. Push the
DOWN key for 3s.
LA Minimum
pressure
(temperature)
alarm for
compressors Suction pressure or
temperature lower
than
SET_C-LAL value signalling only Automatically: as soon as the pressure or
temperature reaches the (Set_C-LAL+
differential) value.
(differential = 0.3bar or 1°C)
LA2 Minimum
pressure
(temperature)
alarm for fans Condensing pressure
or temperature lower
than
SET_F-LAL value signalling only Automatically: as soon as the pressure or
temperature reaches the (Set_F-LAL+
differential) value.
(differential = 0.3bar or 1°C)
HA Maximum
pressure
(temperature)
alarm for
compressors Suction pressure or
temperature higher
than
SET_C+HAL value signalling only
Automatically: as soon as the pressure or
temperature reaches the (Set_C + HAL -
differential) value.
(differential = 0.3bar or 1°C)
HA2 Maximum
pressure
(temperature)
alarm for fans Condensing pressure
or temperature higher
than
SET_F+HAL value signalling only Automatically: as soon as the pressure or
temperature reaches the (Set_F + HAL -
differential) value.
(differential = 0.3bar or 1°C)
A5 Liquid level
alarm Input enabled signalling only Automatically as soon as the input is disabled
A14 Load
maintenance
alarm A load has worked for
the hour set in the
SEr parameter signalling only Manually: reset the running hour of the
compressor
(see par. 8
Running hours of loads )