Daikin RXYQ96PYDN Service Manual page 450

SiUS34-801A_b
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Diagnosis Flow 1
Check 3 Check 4
The number
of indoor units connected
to the same refrigerant circurt system
should not be more than
64 units.
NO
Diagnosis Flow 2
Check 3 Check 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 PC board of
the outdoor unit.
• With single systems, replace
the control PC board 1 (A1P) or
the control PC board 3 (A3P).
• With multi systems, replace the
main PC board (A1P).
The number of indoor units
exceeds the standard. Check the
connection to correct.
Replace the main PC board of
the outdoor unit.
• With single systems, replace
the control PC board 1 (A1P).
• With multi systems, replace the
main PC board (A1P).
Match the refrigerant types of the
outdoor unit and the indoor unit.
435