Daikin RZQ100B8V3B Service Manual page 227

ESIE05-03
3.14 Radiation Fin Temperature Increased (L4)
L4
Remote Controller
Display
Fin temperature is detected by the thermistor of the radiation fin.
Method of
Malfunction
Detection
Malfunction When the temperature of the inverter radiation fin increases abnormally due to faulty heat dissipation.
Decision
Conditions
Supposed Causes
Troubleshooting
∗ Fin temperature detection values
RZQ100~125 (1~)
RZQ100~140 (3~)
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Part 3 – Troubleshooting
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
Could
problem be
caused by high fin
temperature? * See
detection value
table
NO
Do LEDs on
outdoor unit PCB indicate
fin temperature
abnormality?
YES
Is reset possible?
YES
Reset
RZQ71 (1~)
YES
Correct the problem.
NO
Inspect outdoor unit PCB
and remote controller.
NO
Check remote controller indication.
See the section on "P4" error.
Detection Reset
87°C 77°C
79°C 69°C
76°C 66°C
Error Codes: Outdoor Units
3–79
1
3 3
4
5