Code
Description
H10.12
Domestic Hot Water temperature sensor Zone B Closed
H10.13
Swimming Pool Temperature Sensor Zone B Open
H10.14
Swimming Pool Temperature Sensor Zone B Closed
H10.18
Flow temperature sensor Zone C Open
H10.19
Flow temperature sensor Zone C Closed
H10.20
Domestic Hot Water Temperature Sensor Zone C Open
H10.21
Domestic Hot Water temperature sensor Zone C Closed
H10.22
Swimming Pool Temperature Sensor Zone C Open
H10.23
Swimming Pool Temperature Sensor Zone C Closed
H10.27
Flow temperature sensor Zone D Open
H10.28
Flow temperature sensor Zone D Closed
H10.29
Domestic Hot Water Temperature Sensor Zone D Open
H10.30
Domestic Hot Water temperature sensor Zone D Closed
H10.36
Flow temperature sensor Zone E Open
H10.37
Flow temperature sensor Zone E Closed
H10.38
Domestic Hot Water Temperature Sensor Zone E Open
H10.39
Domestic Hot Water temperature sensor Zone E Closed
8.1.3
EHC–05 fault codes
If a fault code is still present after several automatic start-up attempts, the
heat pump switches to error mode.
The heat pump will only resume normal operation once the causes of the
fault have been eliminated by the installer.
When one of the following codes is displayed and the heat pump cannot
restart automatically, contact a maintenance technician.
Tab.37 List of fault codes
Error code
Description
E00.00
Flow temperature sensor is either removed or measures a temperature below range
E00.01
Flow temperature sensor is either shorted or measures a temperature above range
E02.13
Blocking Input of the Control Unit from device external environment
Input BL open.
E02.24
System water flow locking active
8.1.4
EHC–05 alarm codes
An alarm code is a temporary heat pump status, resulting from the
detection of an anomaly. If an alarm code still remains after several
automatic start-up attempts, the system goes into fault mode.
When one of the following codes is displayed and the hybrid system
cannot restart automatically, contact a maintenance technician.
Tab.38 List of alarm codes
Error code
Description
A02.06
Water Pressure Warning active
A02.18
Object Dictionary Error
A02.22
System water flow warning active
A02.55
Invalid or missing device serial number
8 Troubleshooting
38
iHPI
7701562 - v02 - 22052018