11 Troubleshooting
11.1 Resolving error codes
If an error occurs, the control panel will display a key and a code The code
is important for the correct and rapid diagnosis of the type of malfunction
and for any technical assistance that may be needed.
1. Make a note of the code displayed.
2. Switch off the appliance.
3. Switch the appliance back on.
The appliance starts up again autonomously when the reason for
the disruption has been cleared.
4. If the error code is displayed again, correct the problem by following
the instructions in the table below.
11.1.1 List of error codes
Tab.28 Ex-type error codes
Code
Description
Causes and corrective actions
Communication error between the outdoor unit and the
control panel
Check the connection between the outdoor unit and
the control panel.
Replace the control panel if necessary.
Water temperature sensor T5L error
Communication fault: check the connection.
Damaged sensor: replace the sensor.
Evaporation temperature sensor T3 error
Communication fault: check the connection.
Damaged sensor: replace the sensor.
Air temperature sensor T4 error
Communication fault: check the connection.
Damaged sensor: replace the sensor.
Air suction temperature sensor Th error
Communication fault: check the connection.
Damaged sensor: replace the sensor.
Air discharge temperature sensor Tp error
Communication fault: check the connection.
Damaged sensor: replace the sensor.
Fig.73
MW
-4
0
0
0
1
8
8
-3
Electrical
Heating
Enter
Timer /
Clock
Opt Mode
Hybrid Mode
11 Troubleshooting
70
SPC Split
7740321 - v04 - 03122019