F
Operating instructions
cod. 1592001330
1592001330 XC642C GB r1.0 07.06.2004.doc
rel. 1.0
Pa. 19 / 21
Code
Description
Cause
Action
Reset
E0H
High pressure
switch alarm
High pressure switch
input enabled
-
All compressors are
turned off.
-
All fans are turned
on.
Automatically
(if the number of activation are less than
PEn in the PEi time) when the input is disable.
-
Compressors and fans restart working according
to the working algorithm.
Manually
(if PEn activation happened in the PEi time)
When the input is disable:
-
hold pressed the
Restart
(DOWN) key for 3s or
-
turn off and on the instrument.
Compressors and fans restarts working according to the
working algorithm.
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
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
compressors
section
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)
HA
Maximum
pressure
(temperature)
alarm
compressors
section
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 fans
section
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
)
