Code Message
Description
Check
B10
PSU
Internal error
Contact the professional responsible for maintenance of the heat pump
B11
AWAITING
CONFIGU
RATION
NUMBER
The hybrid system has not
been configured
Contact the professional responsible for maintenance of the heat pump
B13
DHW T
OPEN
Bottom domestic hot water
temperature sensor defec
tive
Contact the professional responsible for maintenance of the heat pump
B14
DHW T
CLOSED
Bottom domestic hot water
temperature sensor defec
tive
Contact the professional responsible for maintenance of the heat pump
B18
RESET
RUNNING
Reset under way
B19
HEAT
PUMP FL T
OPEN
Heat pump flow temperature
sensor defective
Contact the professional responsible for maintenance of the heat pump
B20
HEAT PUMP
FL T
CLOSED
Heat pump flow temperature
sensor defective
Contact the professional responsible for maintenance of the heat pump
B24
SYSTEM
FLOW RATE
ERROR
Insufficient flow rate
Contact the professional responsible for maintenance of the heat pump
B26
FL T OPEN
Hybrid system flow sensor
defective
Contact the professional responsible for maintenance of the heat pump
B27
FL T
CLOSED
Hybrid system flow sensor
defective
Contact the professional responsible for maintenance of the heat pump
B29
OUTSIDE T
OPEN
Outside temperature sensor
defective
Contact the professional responsible for maintenance of the heat pump
B30
OUTSIDE T
CLOSED
Outside temperature sensor
defective
Contact the professional responsible for maintenance of the heat pump
B33
HEAT PUMP
RET T
OPEN
Heat pump return tempera
ture sensor defective
Contact the professional responsible for maintenance of the heat pump
B34
HEAT PUMP
RET T
CLOSED
Heat pump return tempera
ture sensor defective
Contact the professional responsible for maintenance of the heat pump
B37
TOP DHW S
OPEN
Top domestic hot water
temperature sensor defec
tive
Contact the professional responsible for maintenance of the heat pump
B38
TOP DHW S
CLOSED
Top domestic hot water
temperature sensor defec
tive
Contact the professional responsible for maintenance of the heat pump
B42
WATER
PRESSURE
ERROR
Pressure lower than the
minimum pressure
Contact the professional responsible for maintenance of the heat pump
B43
HEAT PUMP
FAULT
Heat pump outdoor unit de
fective.
Contact the professional responsible for maintenance of the heat pump
B44
FUNCTION
AL DEVICE
DISCON
NECTED
No communication with the
PCB SMS-04
Contact the professional responsible for maintenance of the heat pump
B45
NON-CRITI
CAL DEVICE
DISCON
NECTED
No communication with the
PCB SMS-04
Contact the professional responsible for maintenance of the heat pump
8 Troubleshooting
46
MIV-4
7623755 - v02 - 03072015