Daikin AT12BV1LS Pocket Manual page 146

Si10-417
Trouble
shooting
Service Diagnosis
Be sure to turn off power switch before connect or
Caution disconnect connector, or parts damage may be occurred.
Check the indoor unit-outdoor
unit connection wires.
Is there any wiring error?
NO
Fully insulated?
ex. between wirings,
earth.
Fine
The connection
wiring length over
30m?
NO
Check the outdoor unit's LED
A.
Is LED A flashing?
YES
Disconnect the No.3 terminal.
Check the voltage of the
indoor unit-outdoor unit
connection wires between
No.2 and No. 3. (Touch the
No.2 termintal with (-) in DC
range)
Is the voltage 30~50V?
NO
Troubleshooting
YES
Correct the indoor
unit-outdoor unit
connection wires.
Not enough
Replace the
connection wirings.
YES
Carry out the wiring
work within the
regulation.
(less than 30m)
NO
Replace the outdoor
unit PCB.
YES
Replace the indoor
unit PCB.
Replace the outdoor
unit PCB.
(R3046)
145