J7" Outdoor Unit: Malfunction Of Thermistor (R7T) For Outdoor Unit Liquid Pipe - Daikin VRV III-S RXYMQ6PV4A Service Manual

SiME34-608
3.26 "J7" Outdoor Unit:
Outdoor Unit Liquid Pipe
J7
Remote
Controller
Display
Applicable RXYMQ6P
Models
Method of Malfunction is detected from the temperature detected by the liquid pipe thermistor.
Malfunction
Detection
Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting
Malfunction of Thermistor (R7T) for
Defect of thermistor (R7T) for outdoor unit liquid 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 outdoor
unit PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R7T) from the outdoor
unit PC board.
(3.5kΩ~
360kΩ)
YES
Refer to thermistor resistance / temperature characteristics table on P229.
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the thermistor and turn
on again.
Replace the thermistor (R7T).
Replace outdoor unit PC board
(A1P).
(V3074)
159