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
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