3 | COMMISSIONING AND MAINTENANCE
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1
Upper panel
2
Electric panel cover
- unscrew the fastening screws
- remove the top panel
- unscrew the fastening screws
- remove the electric panel cover
1
Main electronic board
2
Led 2
3
Led 1
The unit operation is signalled with LED 2.
Led 2
Description
On
Indicates that the unit is supplied with electricity
Off
Indicates that the unit is not supplied with
electricity
Faults are signalled by means of LED 1 blinking.
After the LED switches off:
Wait 10 minutes before touching the device electric components.
Check with a tester that the voltage between the power supply
connectors of the main electronic board is lower than 10 Vdc.
In the presence of operating abnormalities, the unit is secured and
blocked.
Safety block can occur randomly.
Wait for at least 10 minutes before restarting the unit.
If the fault occurs again, an accurate check of the device
components is required. Contact
Technical Support Service.
Indoor units with display signal faults with an alphanumeric code.
Consult the matching outdoor unit instruction booklet for the
installer.
