Outdoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger - Panasonic Urban Multi MX1R Series Service Manual

PACD011001C2
3.22 Outdoor Unit:
J6 J6 J6 J6
Remote Controller
Display
„ Defect of thermistor (R2T or R2-1T, R2-2T) for outdoor unit coil
Supposed Causes
„ Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note: MX1R Series
ME1R Series
Troubleshooting Urban Multi "MX1R, ME1R Series" Using R-407C
Malfunction of Thermistor (R2T) for Heat Exchanger
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Connector is
connected to X19A or
X18A (19) of outdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T or R2-1T, R2-2T) from
the indoor unit PC
board. (3.5kΩ~
360kΩ)
YES
R2T ↔ X19A
R2-1T ↔ X18A
R2-2T ↔ X19A
NO
NO
Troubleshooting
Connect the thermistor and turn on
again.
Replace the thermistor (R2T or R2-1T,
R2-2T).
Replace outdoor unit PC board A1P.
(VF048)
365