Vivax ACP-12CT35GECI Service Manual page 49

Troubleshooting
All indoor units alarms
communication malfunction
Disconnect the power, and check
connection wire for indoor and outdoor
units and wires inside electric box are
connected correctly
Wires are
connected correctly?
Yes
Disconnect the power, and check whether the
connection wires between mainboard of outdoor
unit and filter palte are connected correctly by
referring to wiring diagram
Wires are
connected correctly?
Yes
Whether connection
wires are damaged?
No
Check whether the neutral wire
for mainboard of outdoor unit has
power input
Whether there's
power input?
Yes
Replace mainboard of
outdoor unit
Communication is
resumed ?
Yes
No
No
Yes
No
No
End
Connect wire connectly
according to wiring
diagram
Connect wire connectly
according to wiring
diagram
Replace connection
wires
Replace filter plate of
outdoor unit
Replace mainboard of
indoor unit
Yes
Is malfunction eliminated?
No
Yes
Is malfunction eliminated?
No
Yes
Is malfunction eliminated?
No
Yes
Is malfunction eliminated?
No
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