Troubleshooting; Error Codes; Error Codes On The Pcb Ehc-02 - DeDietrich AWHP 4MR–EMC 24/28 MI HYBRIDE User Manual

8

Troubleshooting

8.1

Error codes

Tab.27 List of alarm codes
Error code Message
A.02.06 WATPRESSURE
WARNING
A.02.22 SYSTEM FLOW
WARNING
Tab.28 List of error codes
Code Message
H.00.00 SENS T FLOW OPEN
H.00.01 SENS T FLOW CLOSED
H.00.16 SENS DHW OPEN
H.00.17 SENS DHW CLOSED
H.00.32 SENS T OUTSIDE OPEN
H.00.33 SENS T OUTSIDE CLOSED
H.00.40 SENS WATPRESSURE OPENS
H.00.41 SENS WATPRESSURE
CLOSEDS
H.00.47 SENS HP FLOW OPEN
H.00.48 SENS HP FLOW CLOSED
H.00.51 SENS HP RETURN OPEN
H.00.52 SENS HP RETURN CLOSED
H.00.57 SENS DHW TOP OPEN
H.00.58 SENS DHW TOP CLOSED
H.02.00 RESET IN PROGRESS
H.02.02 WAITING FOR CONFIGURATION
NUMBER
H.02.03 CONFIGURATION ERROR
H.02.04 PARAMETER ERROR
H.02.05 PSU
H.02.07 WATPRESSURE ERROR
H.02.09 PARTIAL BLOCK
H.02.10 FULL BLOCK
7611444 - v02 - 11122015

8.1.1 Error codes on the PCB EHC-02

An A.xx.xx or H.xx.xx error code corresponds to a temporary status of the
hybrid heat pump after a fault is detected. If an error code remains after
several automatic start-up attempts, the hybrid heat pump switches to fail­
ure mode. Failure mode is indicated by a E.xx.xx type fault code. The hy­
brid heat pump only restarts once the fault is resolved.
Note
An error code is linked to a PCB. If an error code is displayed,
check which PCB is affected.
Description
Water pressure in the installation lower than the minimum pressure
Flow rate in the installation lower than the minimum flow rate
When one of the error codes below is displayed, contact the professional
responsible for maintenance of the heat pump.
Description
Hybrid heat pump flow sensor defective
Hybrid heat pump flow sensor defective
Bottom domestic hot water temperature sensor defective
Bottom domestic hot water temperature sensor defective
Outside temperature sensor defective
Outside temperature sensor defective
Error on the water pressure sensor
Error on the water pressure sensor
Heat pump flow temperature sensor defective
Heat pump flow temperature sensor defective
Heat pump return temperature sensor defective
Heat pump return temperature sensor defective
Top domestic hot water temperature sensor defective
Top domestic hot water temperature sensor defective
Reset under way
The heat pump is not configured
The heat pump is not configured
Incorrect parameter configuration
Internal error
Insufficient water pressure
Check that the hydraulic pressure in the heating circuit is sufficient
The BL input on the terminal block in the EHC-02 PCB is open
The BL input on the terminal block in the EHC-02 PCB is open
8 Troubleshooting
45