Panasonic CU-8ME1XPK - Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3 T)

PACD011001C2 Troubleshooting
Troubleshooting UM Combination “MA1R Series” Using R-407C 517
3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T)
Remote Controller
Display
J3
Supposed Causes
„
Defect of thermistor (R3-1(11)T, R3-2(12)T or R3-13T) for outdoor unit discharge pipe
„
Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note:
16~20 HP class ··· R3-1T, R3-2T (A1P)
24~30 HP class ··· R3-11T, R3-12T (A1P), R3-13T (A3P)
(VF046)
Resistance
is normal when
measured after
disconnecting the thermistor
(R3-1(11)T, R3-2(12)T or
R3-13T) from the indoor
unit PC board.
(3.5kΩ~
400kΩ)
Replace outdoor unit PC board A1P or
A3P.
Connect the thermistor and turn on
again.
NO
NO
Replace the thermistor (R3-1(11)T, R3-
2(12)T, or R3-13T).
YES
YES
Connector
is connected to X16A,
X17A or X21Aof outdoor unit
PC board
(A1P or A3P).
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.