Diagnostic
Error code
20
Position Detection Circuit Error
21
Current Sensor Error
Outdoor Heat Exchange Sensor (TE)
22
/ (TS)
23
Discharge Temperature Sensor (TD)
24
Outdoor Fan Error
26
Other Outdoor Error
27
Compressor Lock
28
Discharge Temperature Error
29
Compressor Breakdown
Temperature/humidity sensor of user
40
interface in zone 1
Comfort Module tank temperature
41
sensor fail
42
Leaving water temperature Sensor fail
Domestic hot water temperature
43
sensor fail
44
Outdoor temperature sensor fail
45
Flowswitch 1
28 80HMA
Item
Master Board
System type
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
30AWH
communicated by heat pump
Value out of range and
Single zone
User Interface IN ZONE =1
Any
Value out of range
Any
Value out of range
(Sensor mapped + Value out
Any
(Par. 71<>3 +sensor not
(Outdoor Temperature Sensor
Value out of range) or
(Outdoor Temperature Sensor
Any
Outdoor Temperature Sensor
from heatpump not available
Flowswitch is mapped and:
Water pump output not
Sanitary water valve not active
Heat pump is ON
Flowswitch detects no flow
Any
Water pump output not
Heat pump is ON
Floswitch detects no flow
Water pump output mapped
Water pump output ON
Floswitch detects no flow
Failure when
Type
Sensor mapped
of range)
OR
mapped)
mapped +
not mapped)
and
case 1)
mapped
case 2)
mapped
Par. 81=1
case 3)
B
B
B
B
B
B
B
B
B
A
B
B
B
A
B;D