PACD011001C2 Troubleshooting
Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C 365
3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger
Remote Controller
Display
J6
J6J6
J6
Supposed Causes
„
Defect of thermistor (R2T or R2-1T, R2-2T) for outdoor unit coil
„
Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note:
MX1R Series
R2T
↔
X19A
ME1R Series
R2-1T
↔
X18A
R2-2T
↔
X19A
(VF048)
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T or R2-1T, R2-2T) 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 (R2T or R2-1T,
R2-2T).
YES
YES
Connector is
connected to X19A or
X18A (19) 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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