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

Troubleshooting
3.21 Outdoor Unit:
J5
Remote Controller
Display
„ Defect of thermistor (R4-1(11)T, R4-2(12)T or R4-13T) 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: 16~20HP class ··· R4-1T, R4-2T (A1P)
24~30HP class ··· R4-11T, R4-12T (A1P), R4-13T (A3P)
518
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 X14A,
NO
X15A or X20A ofoutdoor unit
PC board(A1P
or A3P).
YES
Resistance
is normal when
measured after
NO
disconnecting the thermistor
(R4-1(11)T, R4-2(12)T or
R4-13T) from the indoor
unit PC board.
(3.5kΩ ~
360kΩ)
YES
Troubleshooting UM Combination "MA1R Series" Using R-407C
PACD011001C2
Connect the thermistor and turn on
again.
Replace the thermistor (R4-1(11)T, R4-
2(12)T or R4-13T).
Replace outdoor unit PC board A1P or
A3P.
(VF047)