TH-TUNE
Air-Air and Water-Air autonomous units
OPERATION
Alarm Codes Description
Alarm probe B1 disconnected (Outdoor Temperature)
Alarm probe B2 disconnected (Air supply Temperature)
Alarm probe B3 disconnected (Comp. 1 discharge Temperature)
Alarm probe B5 disconnected (Return humidity)
Alarm probe B6 disconnected (Return humidity)
Alarm probe B7 disconnected (Outdoor humidity)
Alarm probe B8 disconnected (Water inlet temperature circuit 2)
Alarm probe B9 disconnected (Water outlet temperature circuit 3)
Alarm probe B11 disconnected (Low pressure C1, only units with 2 circuits)
Alarm probe B12 disconnected (Low pressure C2, only units with 2 circuits)
Alarm probe B1 disconnected (Outdoor temperature)
Alarm probe B2 disconnected (Air supply temperature)
Alarm probe B3 disconnected (Comp. 1 discharge Temperature)
Alarm probe B5 disconnected (Return humidity)
Alarm probe B6 disconnected (Return humidity)
Alarm probe B7 disconnected (Outdoor humidity)
Alarm probe B8 disconnected (Water inlet temperature circuit 2)
Alarm probe B9 disconnected (Water outlet temperature circuit 3)
Thermic alarm outdoor fan/compressor
Thermic alarm outdoor fan 2 (2-circuit unit)
Thermic alarm indoor fan (2-circuit unit)
Antifreeze alarm 1 (Water inlet below 12 ºC)
Antifreeze alarm 2 (Water outlet below 6 ºC)
Antifreeze alarm 3 (Water inlet < 15ºC and ΔT > 8ºC)
Antifreeze alarm 4 (Compressor ON and water inlet/outlet ΔT lower than 1,5 ºC)
High pressure switch alarm circuit 1
Low pressure switch alarm circuit 11
Minimal pressure switch alarm
Lack of refrigerant alarm
Thermic alarm compressor 2 (2-circuit unit)
Thermic alarm indoor fan 2 (2-circuit unit)
High pressure switch alarm circuit 2
Low pressure switch alarm circuit 2
Minimal pressure switch alarm circuit 2
Alarm lack of refrigerant circuit 2
Note: if code “AL” is shown on the display, then reset as has been explained in the previous paragraph.
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