J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R2T) - Panasonic U-4..6ML5XPQ Service Manual

Panasonic
J3
3.27 " " Outdoor Unit:
Thermistor (R2T)
J3
Remote
Controller
Display
Applicable U-4..6ML5DPQ, U-4..6ML5XPQ
Models
Method of Malfunction is detected from the temperature detected by discharge pipe temperature
thermistor.
Malfunction
Detection
Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting
Malfunction of Discharge Pipe
Defect of thermistor (R2T) for outdoor unit discharge 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
X12A of outdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R2T from the outdoor
unit PC board.
(5.0kΩ~
640kΩ)
YES
Refer to thermistor resistance / temperature characteristics table on P252.
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).
(V3072)
175