SiENBE34-703 Troubleshooting by Indication on the remote control
Troubleshooting 149
3.22 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for
Outdoor Air
remote control
Display
H9
Applicable
Models
RXYSQ4~6P
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the outdoor air thermistor.
Malfunction
Decision
Conditions
When the outside air temperature thermistor has short circuit or open circuit.
Supposed
Causes
! Defect of thermistor (R1T) for outdoor air
! Defect of outdoor unit PC board (A1P)
Troubleshooting
∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P225.
(V3070)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Connector is
connected to X11A of
outdoor PC board
(A1P).
Replace outdoor unit PC board
(A1P).
Connect the connector and turn
on again.
Replace the thermistor (R1T).
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the outdoor unit
PC board. (3.5kΩ to
360kΩ)
YES
YES
NO
NO
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