Radiation Fin Temperature Increased - Daikin SkyAir Super Inverter 70 D Series Service Manual

Troubleshooting by Remote Controller Display / LED Display

6.26 Radiation Fin Temperature Increased

L4
Remote
Controller
Display
Outdoor Unit LED A
Display
Applicable
RZP71~140D
Models
Method of
Fin temperature is detected by the thermistor of the radiation fin.
(Thermistor for RZP 100, 125, 140D is on power transistor (IGBT).)
Malfunction
Detection
Malfunction When the temperature of the inverter radiation fin increases abnormally due to faulty heat
Decision dissipation.
Conditions
Supposed
Causes
Troubleshooting
∗ Fin temperature detection values
164
5 1 3 2 3 3 3 4
Activation of fin thermal switch
Faulty fin thermistor
High outside air temperature
Insufficient cooling of inverter radiation fin
Blocked suction opening
Dirty radiation fin
Faulty outdoor unit PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Could
problem be
caused by high fin
temperature? ∗ See
detection value
table below.
NO
Do LEDs on
outdoor unit PCB indicate
fin temperature
abnormality?
YES
Is reset possible?
YES
Reset
RZP71D
RZP100~140D
4
YES
NO
NO
Detection
90˚C
98˚C
Correct the problem.
Inspect outdoor unit PCB
and remote controller.
Check remote controller
indication.
See the section on error.
(S2031)
Reset
80˚C
88˚C
Troubleshooting
SiE25-110