Daikin ERSQ 011AAV1, Service Manual

Page: 175 / 262

ESIE09-08 Troubleshooting by Indication on the Remote Controller
Troubleshooting 163
3.24
“H9”
Outdoor Unit: Malfunction of Thermistor (R1T) for
Outdoor Air
Remote Control
Display
H9
Applicable
Models
ER*Q 011~016*
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 page 229.
(V3070)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the outdoor
unit PC board.
(3.5k
Ω
to
360k
Ω
)
Connector
is connected to X11A
of outdoor PC board
(A1P).
Replace outdoor unit PC board
(A1P).
Connect the connector and turn
on again.
NO
NO
Replace the thermistor (R1T).
YES
YES