J5" Outdoor Unit: Malfunction Of Thermistor (R2T) For Suction Pipe - Daikin VRV II REYQ8MY1B Service Manual

Si39-306
2.27 " J5 " Outdoor Unit:
Suction Pipe
J5
Remote
Controller
Display
Applicable REYQ8~48M
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
∗2: Refer to thermistor resistance / temperature characteristics table on P.275.
Troubleshooting
Malfunction of Thermistor (R2T) for
Defect of thermistor (R2T) for outdoor unit suction pipe
Defect of outdoor unit PC board (A1P)
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Connector
is connected to
X37A, of outdoor unit
PC board.
(A1P)
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T) from the outdoor
unit PC board.
(3.5kΩ ~
360kΩ)
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the thermistor and turn
on again.
Replace the thermistor R2T.
Replace outdoor unit PC board
A1P.
(V3073)
179