1592001830 XC645D GB r3.4 04.09.2017.docx XC645D 40/50
Load (step) configuration
error
• A relay oA(i) has been set as
compressor without a previous relay
oA(i-1) has been set as compressor.
EI oA1 = StP
The P3 probe is
requested for a function,
but it’s not present
• Check the parameters P3C
None oA(i) is set as
compressors or fans
• Check the setting of oA2, oA3, oA4,
oA6 parameters
P2 probe not available for
the 4÷20mA output
• P2 probe not available P2P =no.
Enable the probe setting: P2P =yES
• The second probe P2 is used to
control the temperature of the engine
of screw compressors. Check CtyP
and set it different from Scr.
P2 probe not available for
fan regulation
• P2 probe not available P2P =no.
Enable the probe setting: P2P =yES
• The second probe P2 is used to
control the temperature of the engine
of screw compressors. Check CtyP
and set it different from Scr.
More than one oAi has
been set as inC1 (inverter
for suction 1)
• Check the oAi parameters and set only
1 as “inC1”.
None analogue output
has been set as “inC1”
• Check AoF and 2AoF and set one of
them as “inC1”
More than one oAi has
been set as inF (inverter
for fan)
• Check the oAi parameters and set only
1 as “inF”.
None anlogue output has
been set as “inF”
• Check AoF and 2AoF and set one of
them as “inF”
The kind of outputs are
not compatible with the 2
suction circuits
• Check parameters oA(i) , CtyP and
set CtyP different from Scr.
AO1 And AO2
SAME
Function
AoF and 2AoF have the
same setting
• Set AoF and 2AoF properly.
One relay is set as hot
gas injection valve (oA2
or oA3 or oA4 = HGi), but
the probe to detected th
superheat is missed:
ASH9 = nP
• Set a probe to detect the superheat by
the parameter ASH9 = P3 or P4.
• If the hot gas injection valve is not
present, set oA2 or oA3 or oA4
different from HGi.
20.1.2 E01L, Electronic Pressure switch alarm, suction section
Parameters
ELP: Electronic pressure switch threshold: (-50°C÷SETC; -58°F÷SETC; PA04÷SETC);
Pressure / Temperature value at which all the compressors are switched off. It has to be set some
degrees above the mechanical low pressure switch value, in order to prevent mechanical low
pressure activation.
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