GEA Grasso - Page 132

Grasso
Refri
g
eration Division
GRASSO SYSTEM CONTROL
Kap.6 - 20 638660E_chapter6.doc 01.2003/0
Warning message Possible cause Warning clearance
The suction temperature is too low. Remove the cause for low suction
temperature in the refrigerating
plant.
112 Warning (01)
Low suction
temperature
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.
This warning is activated if the
suction temperature is less than a
fixed limit value.
The sensor is defective. Replace the sensor.
The motor speed is too high. Remove the cause for high motor
speed in the refrigerating plant.
121 Warning (01)
High motor speed
‘Nmot hi alarm‘ minus ‘High
warning‘ set too high.
Change ‘Nmot hi alarm’ and ‘High
warning’ limits to suitable values.
The sensor has not been correctly
calibrated in the configuration
menu.
Enter the correct calibration value.This warning is activated if the
motor speed is higher than the
‘Nmot hi alarm’ minus ‘High
warning’ limit values.
The sensor is defective. Replace the sensor.
The intermediate temperature at
the low pressure side is too low.
Remove cause of low intermediate
temperature LP in the refrigeration
plant.
124 Warning (01)
Liquid in compressor
Discharge temperature
(LP) too low
This warning is activated if the
discharge temperature at the low
pressure side (equals intermediate
temperature LP) falls below a fixed
limit value.
The intermediate temperature at
the low pressure side is too high.
Remove cause of high intermediate
temperature LP in the refrigeration
plant.
125 Warning (01)
Compressor heating
Discharge temperature
(LP) too high
This warning is activated if the
discharge temperature at the low
pressure side (equals intermediate
temperature LP) exceeds a fixed limit
value.
The discharge temperature at the
high pressure side is too low.
Remove cause of low discharge
temperature in the refrigeration
plant.
126 Warning (01)
Liquid in compressor
Discharge temperature
(HP) too low
This warning is activated if the
discharge temperature at the high
pressure side falls below a fixed limit
value.