Daikin VRV III REYQ8PY1, Service Manual

Page: 336 / 452

Si37-701 Troubleshooting by Indication on the Remote Controller
Troubleshooting 325
Troubleshooting
NO
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).
NO
YES
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.
Check 3 Check 4
Diagnosis Flow 1
Check 3 Check 4
Diagnosis Flow 2
The number
of indoor units connected
to the same refrigerant circurt system
should not be more than
64 units.
Check if the refrigerant
type of the outdoor unit
corresponds to that of
the indoor unit.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.