Daikin RXYQ96PYDN, Руководство по обслуживанию

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Troubleshooting by Indication on the Remote Controller SiUS34-801A_b
414 Troubleshooting
3.45
U1
Reverse Phase, Open Phase
Remote
Controller
Display
U1
Applicable
Models
RXYQ72P~240PYDN, PTJU
REYQ72P~240PYDN, PTJU
Method of
Malfunction
Detection
The phase of each phase are detected by reverse phase detection circuit and right phase or
reverse phase are judged.
Malfunction
Decision
Conditions When a significant phase difference is made between phases.
Supposed
Causes
Power supply reverse phase
Power supply open phase
Defect of outdoor PC board (A1P)
Troubleshooting
(V2820)
Operation
is normal if one
place of power supply
line phase is
replaced.
Fix the open phase. Requires
inspection of field power supply
section.
Reverse phase
Counter measure of the problem is
completed by phase replacement.
Replace outdoor unit PC board
(A1P).
• 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).
YES
YES
NO
NO
There
is an open phase
at the power supply
terminal section (X1M)
of the outdoor
unit.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.