Daikin RXYQ96PYDN Service Manual page 400

SiUS34-801A_b
J8
3.31 Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2
(R7T or R15T)
J8
Remote
Controller
Display
Applicable RXYQ72P~240PYDN, PTJU
Models REYQ72P~240PYDN, PTJU
Method of
Malfunction is detected according to the temperature detected by liquid pipe thermistor.
Malfunction
Detection
Malfunction
When the liquid pipe thermistor is short circuited or open.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on P523.
Troubleshooting
Faulty liquid pipe thermistor 2 (R7T or R15T)
Faulty outdoor unit PC board
Defect of thermistor connection
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 liquid pipe
thermistor connected to
X30A on outdoor
unit PC board
(A1P)?
YES
Is the
resistance
measured after
removing the thermistor
(R7T or R15T) from outdoor
unit PC board normal?
(1.8kΩ to
800kΩ)
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the connector and
operate unit again.
Replace thermistor (R7T or R15T).
Replace outdoor unit PC board
(A1P).
(V3075)
385