Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T) - Panasonic Urban Multi MX1R Series Service Manual

PACD011001C2
3.20 Outdoor Unit:
J3 J3 J3 J3
Remote Controller
Display
„ Defect of thermistor (CU-5: R3T, CU-8·10: R3-1T, R3-2T) for outdoor unit discharge pipe
Supposed Causes
„ Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note:
Troubleshooting Urban Multi "MX1R, ME1R Series" Using R-407C
Malfunction of Discharge Pipe Thermistor (R3T)
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connector is
connected to X17A (18)
NO
or X16A (17) of outdoor unit
PC board (A1P).
YES
Resistance
is normal when
measured after
NO
disconnecting the thermistor
(R3T or R3-1T, R3-2T) from
the indoor unit PC
board. (3.5kΩ~
400kΩ)
YES
CU-5
R3T R3-1T (inverter)
MX1R X17A
ME1R —
CU-8·10
R3-2T (standard)
X17A X18A
X16A X17A
Troubleshooting
Connect the thermistor and turn on
again.
Replace the thermistor (R3T or R3-1T,
R3-2T).
Replace outdoor unit PC board A1P.
(VF046)
363