F3" Outdoor Unit: Abnormal Discharge Pipe Temperature - Daikin VRV III RXYQ5-54PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
3.20 "F3" Outdoor Unit:
Temperature
F3
Remote
Controller
Display
Applicable RXYQ5P~54P
Models
Method of Abnormality is detected according to the temperature detected by the discharge pipe
temperature sensor.
Malfunction
Detection
Malfunction When the discharge pipe temperature rises to an abnormally high level
When the discharge pipe temperature rises suddenly
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
248
Abnormal Discharge Pipe
Faulty discharge pipe temperature sensor
Faulty connection of discharge pipe temperature sensor
Faulty outdoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Discharge
pipetemperature is 115˚C
or higher when the unit stop
by malfunction.
NO
Pull out the discharge pipe
thermistor from the outdoor
PCB, and then make
measurement of resistance
using a multiple meter.
Are
the characteristics
of the discharge pipe
thermistor normal?
(3.5~400KΩ)
∗
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P366.
YES
NO
Si34-601A
Refrigerant shortage, compression
defect, etc. Defect of the
refrigerant system.
Replace the discharge pipe
thermistor.
Replace outdoor unit PC board
(A1P).
(V3068)
Troubleshooting