Outdoor Unit: Malfunction Of Thermistor (R4T) For Suction Pipe - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting
3.21 Outdoor Unit:
J5 J5 J5 J5
Remote Controller
Display
„ Defect of thermistor (R4T or R4-1T, R4-2T) for outdoor unit suction pipe
Supposed Causes
„ Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note: MX1 Series
ME1 Series
176
Malfunction of Thermistor (R4T) for Suction Pipe
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Connector
is connected to X16A
or X14A (15) ofoutdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R4T or R4-1T, R4-2T) from
the indoor unit PC
board. (3.5kΩ ~
360kΩ)
YES
R4T ↔ X16A
R4-1T ↔ X14A
R4-2T ↔ X15A
NO
NO
Troubleshooting Urban Multi "MX1, ME1 Series" Using R-22
PACD011001C2
Connect the thermistor and turn on
again.
Replace the thermistor (R4T or R4-1T,
R4-2T).
Replace outdoor unit PC board A1P.
(VF047)