Daikin RXYQ96PYDN Service Manual page 401

Troubleshooting by Indication on the Remote Controller
J9
3.32 Outdoor Unit: Malfunction of Subcooling Heat
Exchanger Gas Pipe Thermistor (R5T or R13T)
J9
Remote
Controller
Display
Applicable
RXYQ72P~240PYDN, PTJU
Models REYQ72P~240PYDN, PTJU
Method of
Malfunction is detected according to the temperature detected by subcooling heat exchanger gas
Malfunction pipe thermistor.
Detection
Malfunction
When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on P523.
386
Faulty subcooling heat exchanger gas pipe thermistor (R5T or R13T)
Faulty outdoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Confirm which thermistor is
abnormal using outdoor unit
"monitor mode".
(Refer to P334~335)
Is
the connector
for subcooling heat
exchanger gas pipe
thermistor connected to
X30A on outdoor
unit PC board
(A1P)?
YES
Is the
resistance
measured after
removing the thermistor
(R5T or R13T) from outdoor
unit PC board normal?
(1.8kΩ to
800kΩ)
YES
NO
NO
SiUS34-801A_b
Connect the connector and
operate unit again.
Replace thermistor (R5T or R13T).
Replace outdoor unit PC board
(A1P).
(V3075)
Troubleshooting