L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise - Daikin ERQ Service Manual

ESIE09-05
L4
3.32 " " Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise
L4
Remote
Controller
Display
Applicable
ERQ 125 ~ 200 A7V1
Models
Method of Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Detection
Malfunction
When the temperature of the inverter radiation fin increases above 83°C.
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
Actuation of fin thermal (Actuates above 83°C)
Defect of inverter PC board (A2P)
Defect of fin thermistor
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
The radiator
fin temperature is supposed
to have risen to 84°C
or more.
NO
Is the
connector X111A of
the fin thermistor properly
connected to the outdoor
PC board?
YES
Turn ON the power supply,
and then press the remote
controller check button once.
Is the
4
malfunction code " "
displayed on the remote
controller?
NO
Does the
L4
malfunction code " "
recur when the unit starts
operation?
NO
Troubleshooting by Indication on the Remote Controller
YES
NO
YES
YES
: http://splitoff.ru/tehn-doc.html
Faulty heat radiation of power unit
• Air suction opening blocked
• Dirty radiator fin
• High outdoor temperature
Properly connect.
To "P4" troubleshooting
Replace the inverter PC board
assy (A2P) as well.
Continue operation.
201