J5" Outdoor Unit: Malfunction Of Thermistor (R2T), (R7T); For Suction Pipe; Suction Pipe - Daikin VRV III RXYQ5-54PY1 Service Manual

Troubleshooting by Indication on the Remote Controller
3.26 "J5" Outdoor Unit:

for Suction Pipe

J5
Remote
Controller
Display
Applicable RXYQ5P~54P
Models
Method of Malfunction is detected from the temperature detected by the suction pipe temperature
thermistor.
Malfunction
Detection
Malfunction When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
254
Malfunction of Thermistor (R2T), (R7T)
Defect of thermistor (R2T), (R7T) for outdoor unit suction pipe
Defect of outdoor unit PC board (A1P)
Defect of thermistor connection
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connector
is connected to
X30A, of outdoor unit
PC board.
(A1P)
YES
Resistance
is normal when
measured after dis-
connecting the thermistor
(R2T), (R7T) from the
outdoor unit PC
board. (1.8kΩ
to 800kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P365.
NO
NO
Si34-601A
Connect the connector and turn on
again.
Replace the thermistor R2T.
Replace outdoor unit PC board
(A1P).
(V3073)
Troubleshooting