Daikin E Series, Руководство по обслуживанию

Страница: 390 / 453

SiAU18-715 Troubleshooting for Outdoor Unit
Troubleshooting 377
7.18 Malfunction of Inverter Radiating Fin Temperature Rise
Remote
Controller
Display
L4
Applicable
Models AII outdoor unit models
Method of
Malfunction
Detection Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Decision
Conditions When the temperature of the inverter radiation fin increases above 83°C.
Supposed
Causes
„
Actuation of fin thermal (Actuates above 83°C)
„
Defect of inverter PCB
„
Defect of fin thermistor
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Turn ON the power supply,
and then press the remote
controller check button once.
The
radiator fin
temperature is supposed to
have risen to 83
°
C
or more.
Is the
connector X111A
of the fin thermistor properly
connected to the outdoor
PCB?
Is the
malfunction code
"P4" displayed on the
remote controller?
Does the
malfunction code
"L4" recur when the unit
starts operation?
Faulty heat radiation of
power unit
• Air suction opening blocked
• Dirty radiator fin
• High outdoor
Continue operation.
(Q0567)
YES
NO
NO
Properly connect.
NO
YES
To "P4" troubleshooting
YES
NO
Replace the outdoor PCB
(A1P) as well.
YES