F3" Outdoor Unit: Abnormal Discharge Pipe Temperature - Daikin R-410A Service Manual

Troubleshooting by Indication on the Remote Controller
4.20 "F3" Outdoor Unit: Abnormal Discharge Pipe
Temperature
F3
Remote
Controller
Display
Applicable
AII outdoor unit models
Models
Method of Abnormality is detected according to the temperature detected by the discharge pipe
Malfunction temperature sensor.
Detection
! When the discharge pipe temperature rises to an abnormally high level
Malfunction
! When the discharge pipe temperature rises suddenly
Decision
Conditions
! Faulty discharge pipe temperature
Supposed
! Faulty connection of discharge pipe thermistor
Causes
! Faulty outdoor unit PCB
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P198.
134
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Discharge pipe
YES
temperature is 115°C or
higher.
NO
Are
the characteristics
NO
of the discharge pipe
thermistor normal?
(3.5~400KΩ)
YES
SiBE39-402A
Out of gas, compression defect,
etc. Defect of the refrigerant
system.
Replace the discharge pipe
thermistor.
Replace outdoor unit PC board
A1P.
(V3182)
Troubleshooting