J7" Outdoor Unit: Malfunction Of Liquid Pipe Thermistor (R6T) - Daikin VRV III RXYQ5-54PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
3.28 "J7" Outdoor Unit:
(R6T)
J7
Remote
Controller
Display
Applicable RXYQ5P~54P
Models
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
∗
256
Malfunction of Liquid Pipe Thermistor
Faulty liquid pipe thermistor (R6T)
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.
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
(R6T) from outdoor unit PC
board normal?
(1.8kΩ to
800kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P365.
NO
NO
Si34-601A
Connect the connector and
operate unit again.
Replace thermistor (R6T).
Replace outdoor unit PC board
(A1P).
(V3075)
Troubleshooting