Daikin AT12BV1LS Pocket Manual page 66

Si10-417
Trouble
shooting
Check
No.5-1
Refer to
P.155
Check No.6
Refer to
P.157
Check No.11
Refer to
P.162
Service Diagnosis
Be sure to turn off power switch before connect or
Caution disconnect connector, or parts damage may be occurred.
Four-way valve
coil disconnected
(loose)?
NO
Harness out of
connector?
NO
Check the continuity of the
four-way valve coil and
harness.
Disconnect
the harness from
the connector.
Resistance between
harnesses about
1500 Ω?
YES
Check No.
Check the four-way valve
switching output.
Functioning
Any thermistor
disconnected?
NO
Check No.
Check the thermistors.
Functioning
Check No.
Check the refrigerant
line.
Functioning
YES
YES
NO
5-1
Malfunctioning
YES
Malfunctioning
6
Malfunctioning
11
l
Water mixed
l
Shut-off
valve
defective
Troubleshooting
Correct.
Reconnect.
Replace the four-way
valve coil.
Replace the outdoor
unit PC board.
Reconnect in position.
Replace a defective
thermistor.
Refer to the
refrigerant line check
procedure.
Replace the four way
valve (defective or
dust-clogged).
(Q0353)
65