25
IOM ACHA-ACHBA_201a1201_208000_180901_EN
ACHA / ACHBA
PACKAGED COMPACT
HORIZONTAL AIR - AIR
OPERATION
TH TUNE CONTROL
DIAGNOSIS ALARMS IN CONTROL
TH TUNE - 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)
ALb6
Probe alarm B6 disconnected (Return humidity)
ALb7
Probe alarm B7 disconnected (Outdoor humidity)
ALPA
High pressure switch alarm circuit 1
ALPB
Low pressure switch alarm circuit 1
ALF7
Thermal alarm of the indoor 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 units)
AL12
Probe alarm B12 disconnected (Pressure condens. Circuit 2, only 2 circuits units)
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
A2F7
Thermal alarm of the compressor 2 (2 circuits machine)
A2F8
Thermal alarm indoor fan (2 circuits machine)
ALF7
Thermal alarm of the external fan 2 (2 circuits machine)
ALF8
Thermal alarm of the indoor fan (2 circuits machine)
