Page 24
Control
6.6 Main alarms
Once you have solved the problem that originated
the alarm, reset the alarms by pressing the ON-OFF
button.
E00 does not close the relay that signals an alarm
state (terminals 121-122)
High pressure alarm
When this alarm is activated, the control system halts
the operation of the involved refrigeration circuit and
opens the compressor’s control chain (safety against
failures). The alarm is reset manually from the control
panel when the pressure switch has been reset auto-
matically.
Low pressure alarm
When this alarm is activated, the control system halts
the operation of the involved refrigeration circuit.
The activation of this alarm is inhibited for approx.
40 seconds from start-up. The reset is automatic for
the first three times during the same hour. Upon the
fourth activation, a manual reset is required.
Antifreeze alarm
This alarm is enabled when the temperature of the
fluid leaving the evaporator drops below 4 °C. After
the activation of this alarm, the control system halts
the operation of the involved refrigeration circuit.
The reset is manual from he control panel.
External interlock alarm
When this alarm is activated, the control system halts
the operation of the unit. The reset is automatic.
Code
Description
Reset
E00
Remote Off
Automatic
E01
High pressure 1
Manual
E02
Low pressure 1
Automatic/manual
E03
Thermal protection, compressor 1
Manual
E04
Thermal protection, fans
Manual
E05
Antifreeze, circuit 1
Manual
E06
Failure of leaving water sensor 1
Automatic
E07
Failure of coil sensor 1
Automatic
E21
High pressure 2
Manual
E22
Low pressure 2
Automatic/manual
E23
Thermal protection, compressor 2
Manual
E25
Antifreeze, circuit 2
Manual
E26
Failure of leaving water sensor 2
Automatic
E27
Failure of coil sensor 2
Automatic
E40
Failure of entering water sensor
Automatic
E41
Flow meter - no water
Manual
E42
Failure of ST4 sensor
Automatic
E44
Machine discharge
Manual
E45
Configuration error
Manual
E46
High temperature of entering water
Automatic
Manuale CLS-CLH1 7.2.2005 10:17 Pagina 24
