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IOM_ACVBA-ACVA_351a2402_207958_180109_EN
ACVBA-ACVA
PACKAGED VERTICAL COMPACT UNITS
AIR-AIR
OPERATION
TH TUNE CONTROL
Time schedule
Alarms
The alarms shown by a code on the thermostat will cause the stop of the unit.
Reset the Alarm Codes
Press several times the central button until
“RES” is
displayed (only available when there is at least one
active alarm).
All the alarms whose causes have disappeared or have been
solved, are cancelled.
Turn the central button to go from 0 to 1.
Press the central button one time to confirm.
When the reset is completed, the text will change to OK.
After resetting, the thermostat will automatically return to normal and will display the temperature.
Description of the Alarm Codes
CODE
DESCRIPTION
ALb1
Probe alarm B1 disconnected (Outdoor temperature)
ALb2
Probe alarm B2 disconnected (Supply temperature)
ALb3
Probe alarm B3 disconnected (Discharge temperature comp.1)
ALb5
Probe alarm B5 disconnected (Return humidity)
ALPA
High pressure switch alarm circuit 1
ALPB
Low pressure switch alarm circuit 1
ALF7
Thermal alarm of the interior fan
ALF6
Thermal alarm of the external fan/compressor
ALPM
Minimum pressure switch alarm
ALRF
Lack of refrigerant alarm
AL11
Probe alarm B11 disconnected (Pressure condens.Circuit 1, only 2 circuits
unit)
AL12
Probe alarm B12 disconnected (Pressure condens.Circuit 2, only 2 circuits
unit)
A2PA
High pressure switch alarm circuit 2
A2PB
Low pressure switch alarm circuit 2
A2PM
Minimum pressure switch alarm circuit 2
A2RF
Lack of refrigerant alarm circuit 2
ALF7
Thermal alarm of the external fan 2 (machine 2 circuits)
ALF8
Thermal alarm of the interior fan (machine 2 circuits)
