Troubleshooting PACD011001C2
364 Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C
3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe
Remote Controller
Display
J5
J5J5
J5
Supposed Causes
„
Defect of thermistor (R4T or R4-1T, R4-2T) for outdoor unit suction pipe
„
Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note:
MX1R Series
R4T
↔
X16A
ME1R Series
R4-1T
↔
X14A
R4-2T
↔
X15A
(VF047)
Resistance
is normal when
measured after
disconnecting the thermistor
(R4T or R4-1T, R4-2T) from
the indoor unit PC
board. (3.5kΩ ~
360kΩ)
Replace outdoor unit PC board A1P.
Connect the thermistor and turn on
again.
NO
NO
Replace the thermistor (R4T or R4-1T,
R4-2T).
YES
YES
Connector is
connected to X16A or
X14A (15) of outdoor unit
PC board (A1P).
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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