8 Troubleshooting
8.1 Error messages
1. Press
for 3 seconds to restart the appliance.
Note
The previous codes are displayed alternately.
In economy mode, the appliance will not run a domestic hot water
heating cycle after a central heating cycle.
2. Briefly press the
key to display the current operating status on
the screen.
8.1.1 Error codes
An error code is a temporary boiler status, resulting from the detection of
an anomaly.
Tab.21 List of alerts
Error code Message
Description
W4
WATPRESSURE
WARNING
Water pressure in the installation lower than the minimum pressure
W5
SYSTEM FLOW RATE
ALERT
Flow rate in the installation lower than the minimum flow rate
Tab.22 List of lock-downs
Code Message
Description
Check
B00
PARAME
TER ERROR
Incorrect parameter configu
ration
Contact the professional responsible for maintenance of the heat pump
B02
TOTAL
LOCK-
DOWN
The BL input on the terminal
block in the EHC-02 PCB is
open
Contact the professional responsible for maintenance of the heat pump
B03
PARTIAL
LOCK-
DOWN
The BL input on the terminal
block in the EHC-02 PCB is
open
Contact the professional responsible for maintenance of the heat pump
B05
WATER
PRESSURE
S OPEN
Error on the water pressure
sensor
Contact the professional responsible for maintenance of the heat pump
B06
WATER
PRESSURE
S CLOSED
Error on the water pressure
sensor
Contact the professional responsible for maintenance of the heat pump
B09
CONFIG ER
ROR
The hybrid system has not
been configured
Contact the professional responsible for maintenance of the heat pump
Fig.51 Restarting the appliance
MW-5000060-2
Fig.52 Error code display
MW-5000061-2
8 Troubleshooting
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