20
8 - CONTROL
ALARM LIST
The ALARMS indicate a potentially hazardous situation for the machine integrity.
Before resetting the alarm, identify and remove the reason of the lock: a repeated reset can cause irreversible damage. That's why the
reset is MANUAL, namely through keyboard (provided that the cause no longer exists).
PRE-ALARMS and SIGNALS indicate a close risk situation. Their occurrence can be accepted if occasional and/or in temporary situa-
tions (for example at the system start-up).
The reset is AUTOMATIC, that is there is a self-reset as soon as the cause ceases without any keyboard intervention.
FAILURES signal the malfunctioning of probes and transducers; they are AUTOMATICALLY reset, so that anyway the unit can oper-
ate, even if possibly with reduced functions.
In case of doubt contact an authorized service center.
The presence of one or more alarms is signalled by the ALARM CODE blinking and by the machine time it/they occurred.
The cumulative lock relay activates simultaneously with the alarm code displaying.
Some alarms, typically PRE-ALARMS, do not activate the relay.
The table shows all the variables which can be managed by the electronic system.
According to the machine configuration and the accessories, some alarms can be not relevant.
Code
Alarms
reset
I/O on
1 compr. board
I/O on
2 compr. board
E01
Inlet temp. Probe fault fault
Automatic
2.1
2.1
E02
Outlet temp. Probe fault
Automatic
2.2
2.2
E03
Externe temperature probe fault
Automatic
2.3
2.3
E04
Ambient UR% probe fault
Automatic
2.9
3.7
E05
Externe UR% probe fault
Automatic
3.8
3.8
E06
Air qualità probe fault
Automatic
3.11
3.11
E07
Fire
alarm
Manual 1.3
1.3
E08
Outlet fan protection intervention
Manual
1.7
1.7
C9
Clogged filter signal
Automatic
1.8
1.14
E10
Aux. heater overtemperature alarm
Manual
1.10
E11
Antifreeze
alarm
Manual
1.9
1.15
C12
Outlet high temp. signaling
Automatic
1.10
C13
Outlet low temp. signaling
Automatic
E14
Cond. pressure probe fault. - 1"
Automatic
E15
Cond/evap. pressure probe fault - 1
Automatic
2.8
2.8
E16
High pressure alarm - 1
Manual
1.5
1.5
C17 - E17
Low pressure alarm - 1
Automatic
1.4
1.4
E18
Compressor / fan safety device intervention -1
Manual
1.6
1.6
E19
Condenser / evap. water-flow alarm -1
Automatic
C20
High pressure –1 prealarm 1
Automatic
C21 - E21
High pressure –1 prealarm 2
Automatic
C22 - E22
Low pressure prealarm - 1
Automatic
C23
Defrosting forcing intervention - 1
Automatic
E24
Condensation temperature probe fault - 2
Automatic
E25
Cond./evap. pressure probe fault – 2
Automatic
2.9
E26
High pressure alarm – 2
Manual
1.10
C27 - E27
Low pressure alarm – 2
Automatic
1.8
E28
Compressor/fan safety intervention-2
Manual
1.9
E29
Condenser/evap. Water-flow alarm – 2
Automatic
C30
High pressure –2 prealarm 1
Automatic
C31 - E31
High pressure –2 prealarm 2
Automatic
C32 - E32
Low pressure prealarm - 2
Automatic
C33
Defrosting forcing intervention – 2
Automatic
E34
Internal handling coil temperature probe fault
Automatic
E35
Unit configuration error
Automatic
E36
Condenser temperature probe fault
Automatic
E37
Condenser / water evap. antifreeze alarm
Automatic
E00
Communication time out between thermostat and unit
Automatic
E38
Overhetaing external water coil
Automatic