5. Scroll through the errors by pressing the or key. When this menu
opens, the row of the error in the memory appears briefly. The PCB
name appears. Go back to the error list by pressing the
h
key.
Important
The errors are stored from the most recent to the oldest.
6. Go back to the Er:xxx display by pressing the
h
key. Press the
key: the CLR parameter flashes after the errors. 000 corresponds to
the PCB selected.
Clear the error memory by pressing the
key.
7. Exit the Malfunctions menu by pressing the
h
key.
8.3
Troubleshooting
Problems
Probable causes
Corrections
The radiators are cold. The heating set point tem
perature is too low.
Increase the value of parameter or, if a room thermostat is connec
ted, increase the temperature on it.
The heating mode is deac
tivated.
Activate the heating mode.
The radiator valves are
closed.
Open the valves on all radiators connected to the heating system.
The heat pump is not op
erating.
Check that the heat pump is switched on.
Check the fuses and switches on the electrical installation.
The water pressure is too
low (< 1 bar).
Top up the installation with water.
There is no domestic
hot water.
The domestic hot water
set point temperature is
too low.
Increase the value of parameter
.
The domestic hot water
mode is deactivated.
Activate the domestic hot water mode.
The energy-saving shower
head is restricting the wa
ter flow.
Clean the shower head; replace it if necessary.
The heat pump is not op
erating.
Check that the heat pump is switched on.
Check the fuses and switches on the electrical installation.
The water pressure is too
low (< 1 bar).
Top up the installation with water.
Significant variations in
domestic hot water
temperature
Insufficient water supply
Check the water pressure in the installation.
Open the valve.
The heat pump does
not work.
The heating set point tem
perature is too low.
Increase the value of parameter or, if a room thermostat is connec
ted, increase the temperature on it.
The heat pump is not op
erating.
Check that the heat pump is switched on.
Check the fuses and switches on the electrical installation.
The water pressure is too
low (< 1 bar).
Top up the system with water.
An error code appears on
the display.
Correct the error if possible.
The water pressure is
too low (< 1 bar).
Not enough water in the
installation.
Top up the system with water.
Water leak.
Contact the installer.
Fig.59
MW
-1
0
0
0
6
9
0
-1
8 Troubleshooting
7613346 - v05 - 13112018
200 ESL HYBRID
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