Messages
Code
Description
ROOM S.C FAIL.
D13
Room temperature sensor error on circuit C: circuit C operates with no influence from
the room temperature sensor on circuit C:
Contact the professional responsible for maintenance of the heat pump
MC COM.FAIL
D14
Interruption in communication between the SCU PCB and the boiler radio module:
Contact the professional responsible for maintenance of the heat pump
ST.TANK S.FAIL
D15
Storage tank sensor error: storage tank heating is no longer covered:
Contact the professional responsible for maintenance of the heat pump
SWIM.P.B.S.FA
D16
Swimming pool sensor error on circuit B: swimming pool heating runs all the time dur
ing the comfort period on circuit B:
Contact the professional responsible for maintenance of the heat pump
SWIM.P.C.S.FA
D16
Swimming pool sensor error on circuit C: swimming pool heating runs all the time dur
ing the comfort period on circuit C
Contact the professional responsible for maintenance of the heat pump
DHW 2 S.FAIL
D17
Sensor error on tank 2:
Contact the professional responsible for maintenance of the heat pump
CU COM.FAIL
D27
Interruption in communication between the SCU and PCU PCBs:
Contact the professional responsible for maintenance of the heat pump
5 RESET:ON/OFF
D32
Five resets have been performed in less than an hour:
Switch the appliance off then on
TA-S SHORT-CIR
D37
The Titan Active System has short circuited:
Production of domestic hot water is off:
Restart domestic hot water production mode pressing the
key.
The domestic hot water tank is no longer protected:
Contact the professional responsible for maintenance of the heat pump
If a domestic hot water tank without the Titan Active System is connected:
Contact the professional responsible for maintenance of the heat pump
TA-S DISCONNEC
D38
The Titan Active System is in open circuit:
Production of domestic hot water is off:
Restart domestic hot water production mode pressing the
key.
The domestic hot water tank is no longer protected:
Contact the professional responsible for maintenance of the heat pump
If a domestic hot water tank without the Titan Active System is connected:
Contact the professional responsible for maintenance of the heat pump
FAIL UNKNOWN
D40
Contact the professional responsible for maintenance of the heat pump
ST.TAN.BOT S.DEF
D41
Contact the professional responsible for maintenance of the heat pump
DHW A S.FAIL
D42
Contact the professional responsible for maintenance of the heat pump
DHW B S.FAIL
D43
Contact the professional responsible for maintenance of the heat pump
DHW C S.FAIL
D44
Contact the professional responsible for maintenance of the heat pump
DHW BOT.S.FAIL
D45
Contact the professional responsible for maintenance of the heat pump
CONF.OUT.C DEF
D46
Contact the professional responsible for maintenance of the heat pump
DEF.BAD CU
D99
The software version in the SCU PCB does not recognise the PCU PCB connected:
Contact the professional responsible for maintenance of the heat pump
FAIL UNKNOWN
D254
Contact the professional responsible for maintenance of the heat pump
8.2.3
Bxx type errors
Tab.37 List of Bxx type errors
Messages
Code
Description
BL.PARAM.CRC
B00
An incorrect parameter value has been selected.
Contact the professional responsible for maintenance of the heat pump
BL.I.BL.COMPLETE
B02
A total power cut-off with no frost protection is running
BL.I.BL.PARTIAL
B03
A total power cut-off with frost protection is running
8 Troubleshooting
7613348 - v06 - 10122018
200 ASL HYBRID
49
