Daikin RTSQ20PY1 Service Manual page 325

SiBE31-801_C
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Diagnosis Flow 1
Confirmation of Confirmation of
malfunction 3 malfunction 4
The number of indoor
units connected to the
same refrigerant circuit
system should not be
more than 64 units.
NO
Diagnosis Flow 2
Confirmation of Confirmation of
malfunction 3 malfunction 4
Check if the refrigerant
type of the outdoor unit
corresponds to that of the
indoor unit.
NO
Troubleshooting by Indication on the Remote Controller
YES
YES
Replace the main PCB of the
outdoor unit.
The number of indoor units
exceeds the standard. Check the
connection to correct.
Replace the main PCB of the
outdoor unit.
• With single systems, replace the
control PCB 1 (A1P).
• With multi systems, replace the
main PCB (A1P).
Match the refrigerant types of the
outdoor unit and the indoor unit.
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