Daikin RTSQ20PY1 Service Manual page 315

SiBE31-801_C
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Check the LED lamps for "Confirmation
of malfunction 3" corresponding to the
U7
malfunction code " " and for
Confirmation of malfunction 4 in the
monitor mode. (Refer to P.218~219 for
how to check)
Was the PCB (A1P)
NO
replaced with a
substitute PCB?
YES
Is the model setting
of the substitute PCB
correct?
YES
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Confirmation of Confirmation of
malfunction 3 malfunction 4
Troubleshooting by Indication on the Remote Controller
NO
Make correct model setting.
Go on to the Diagnosis Flow 1
(Faulty transmission caused when
the external control adaptor for
outdoor unit is mounted)
Go on to the Diagnosis Flow 2
(Transmission alarm given when
the external control adaptor for
outdoor unit is mounted)
Go on to the Diagnosis Flow 3
(Abnormal transmission between
the master unit and the slave unit 1)
Go on to the Diagnosis Flow 4
(Abnormal transmission between
the master unit and the slave unit 2)
Go on to the Diagnosis Flow 5
(Multi-connection RTSYQ units)
Go on to the Diagnosis Flow 6
(Erroneous manual address
settings of the slave units 1 and 2)
Go on to the Diagnosis Flow 7
(Connection of four or more
outdoor units to the same circuit)
Go on to the Diagnosis Flow 8
(Faulty auto address of the slave
units 1 and 2)
Go on to the Diagnosis Flow 9
(Disconnection of Function Unit)
Go on to the Diagnosis Flow 10
(Over connection of Function Unit)
Go on to the Diagnosis Flow 11
(Malfunction in installation of
RTSYQ20P)
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