GEA Grasso - Page 126

Grasso
Refri
g
eration Division
GRASSO SYSTEM CONTROL
Kap.6 - 14 638660E_chapter6.doc 01.2003/0
Display message / Explanation Possible cause of the alarm Alarm clearance
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
080 Alarm (01)
Wire failure
oil temperature
There is a short circuit in the sensor
wiring.
Check where the short circuit has
occured and rectify.
The sensor is defective. Replace the sensor.The GSC has detected a loose wire
or short circuit in the oil temperature
sensor.
The analogue input module
defective.
Replace the analogue input module.
081 Alarm (01)
Selected refrigerant
not valid with
selected compressor
This alarm is activated if the selected
refrigerant is not allowed for the
selected compressor type
.
The combination of the selected
refrigerant and selected
compressor type is invalid.
Check the parameters ‘Refrigerant’
and ‘Comp type’ in the configuration
menu.
The configuration is invalid. Check the parameter ‘Comp type’ in
the configuration menu.
082 Alarm (01)
Compressor data
not found. Please
select other comp.
This alarm is activated if during the
configuration a compressor type has
been selected that is not available
on the EPROM
.
The selected compressor type is not
available on the EPROM.
If the correct compressor type has
been selected and this alarm occurs,
where the PLC shows no other failures,
the EPROM has to be exchanged.
The configuration is invalid. Check the parameters ‘LP cylinders’,
‘HP cylinders’, ‘Fast Pull Down’ and
‘Booster’ in the configuration menu.
083 Alarm (01)
Compressor
configuration
not valid
This alarm is activated if a
compressor configuration has been
selected that is not available on the
EPROM
.
The selected compressor
configuration is not available on
the EPROM.
If the correct compressor configuration
has been selected and this alarm
occurs, where the PLC shows no other
failures, the EPROM has to be
exchanged.
The cylinder head temperature is
too high.
Remove cause of high cylinder head
temperature in the refrigeration plant
or at the compressor.
090 Alarm (01)
Cylinder head
temperature
too high
The terminal connections have
become loose or a wire is broken.
Check the terminal connections for
tightness and continuity of wiring.
The sensor is defective. Replace the sensor.This alarm is activated if the digital
input signal E 1.3 ’Cyl head temp
safety’ equals 0.
The digital input module defective. Replace the digital input module.