Daikin RTSQ20PY1 Service Manual page 320

Troubleshooting by Indication on the Remote Controller
Troubleshooting
309
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 9
Confirmation of Confirmation of
malfunction 3 malfunction 4
Is a function unit connected?
YES
Diagnosis Flow 10
Confirmation of Confirmation of
malfunction 3 malfunction 4
Two or more function units
are connected.
NO
Diagnosis Flow 11
Confirmation of Confirmation of
malfunction 3 malfunction 4
Model name is RTSYQ20P.
YES
RTSQ8P and RTSQ12P are
multi connected.
YES
NO
Connect the function unit.
Replace the main PCB of the
outdoor unit.
YES
Check for the connection.
Only one function unit can be
connected.
Replace the main PCB of the
outdoor unit.
NO
Replace the main PCB of the
outdoor unit.
NO
Connect them correctly.
Replace the main PCB of the
outdoor unit.
SiBE31-801_C
Troubleshooting