Manual Argo A7 - AWIAS7DC (page 13 of 100) (English, German, French, Italian, Portuguese, Spanish)

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3742540532-U-AWIAS7-BS9DC 20-07-2015 8:49 Pagina 13

ERROR

LEDS

OPERATION TIMER STANDBY

POSSIBLE CAUSE SYSTEM BEHAVIOUR SOLUTION

F F F

Communication error between the out-

door unit and the indoor unit

Fan is stopped and flap is closed

after 30 seconds of missing com-

munication.

The system restarts automatically

as soon as the communication is

recovered.

Check that connections between C1

and C2 on outdoor and indoor terminal

block are correct (C1 terminals con-

nected together, C2 terminals connect-

ed together).

Check that a shielded communication

cable has been used.

Check that the dip-switch SW1 for com-

munication address setting is in the

correct position.

Check that all earth cables are proper-

ly connected to every terminal.

Check that the shield of the communi-

cation cable is properly connected to

every terminal.

Check the communication fuse on out-

door and indoor unit.

Check that the outdoor unit has power

supply and that it is working.

Check that all PCBs are powered on.

Be sure that power supply has not

been connected to the communication

terminals.

Check that there are no burnt signs on

the PCBs, in particular close to commu-

nication cables.

Check that the fan motor is not dam-

aged and it doesn’t create short circuit

on the indoor PCB.

O = LED OFF

= LED ON F = Flashing LED

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Argo A7 - AWIAS7DC Manual

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