Beretta 20171586, Руководство по установке

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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
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.
Faults are signalled by means of LED 1 blinking.
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.
Tabella allarmi
Faults are signalled by means of LED 1 blinking.
Led 1 Description
1 External unit microprocessor fault
2 Power module fault (IPM)
3 Main electronic board protection
against overcurrent
4 Communication error between
main board (PCB) and power
module (IPM)
5 High pressure protection
6 Wrong power supply voltage
7 Compressor lockout
8 Overheat protection for
compressor discharge
9 Fan motor malfunction
10 Defrost temperature sensor failure
11 Suction probe fault
12 External air probe fault
13 Discharge temperature sensor
failure
14 Compressor suction
overtemperature
15 Communication error between
outdoor and indoor unit
16 Lack of refrigerant
17 4-way valve malfunction
18 Deviate from the normal for the
compressor
19 Power module malfunction
20 Internal unit overload
21 Internal unit overload
22 Internal unit anti-freeze protection
23 Main electronic board overheating
24 Compressor motor overcurrent
25 Overcurrent protection for single-
phase of the compressor
27 CT disconnection
28 Liquid probe circuit A fault
29 Liquid probe circuit B fault
32 Gas probe circuit A fault
33 Gas probe circuit B fault
37 Heat exchanger protection
38 Power supply modul fault
46 Wrong combination with indoor
unit