Daikin Floor Standing Type F-Series, Руководство по обслуживанию

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SiBE06-708_A Troubleshooting
Service Diagnosis 90
4.6 Signal Transmission Error (between Indoor Unit and
Outdoor Unit)
Remote
Controller
Display
U4
Method of
Malfunction
Detection The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is
checked whether it is normal.
Malfunction
Decision
Conditions The data sent from the outdoor unit cannot be received normally, or the content of the data is
abnormal.
Supposed
Causes
„
Wiring error
„
Breaking of the connection wires between the indoor and outdoor units (wire No. 3)
„
Defective outdoor unit PCB
„
Defective indoor unit PCB
„
Disturbed power supply waveform
Troubleshooting
Check No.10
Refer to P.131
Check No.10
Check the power supply
waveform.
Check the voltage of the
connection wires on the indoor
terminal board between No. 1
and No. 3, and between No. 2
and No. 3.
YES
YES
Replace the indoor unit PCB.
Locate the cause of the
disturbance of the power
supply waveform, and correct
it.
NO
(R12160)
NO
YES
YES
NO
NO
Caution
Correct the indoor unit-outdoor
unit connection wires.
Diagnose the outdoor unit
PCB.
∗
Before you check the LED A,
cancel the standby electricity
saving function by operating
fan operation with the remote
controller.
∗
Wait at least for 7 sec. after
turning on the power.
Replace the connection wires
between the indoor and
outdoor units.
Is LED A blinking?
Properly insulated?
Is there any disturbance?
Is there any wiring error?
Check the indoor unit-outdoor unit
connection wires.
Check the LED A on the outdoor
unit PCB.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.