J9" Outdoor Unit; Malfunction Of Thermistor (R4T); J9" Outdoor Unit: Malfunction Of Thermistor (R4T) - Daikin RXYSQ4-5-6PA7V1B Service Manual

SiBE34-802
J9
3.31 " " Outdoor Unit:
J9
Remote
Controller
Display
Applicable RXYSQ4~6PA
Models
Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger
gas pipe thermistor.
Malfunction
Detection
Malfunction When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting

Malfunction of Thermistor (R4T)

Faulty subcooling heat exchanger gas pipe thermistor (R4T)
Faulty outdoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is
the connector
for subcooling heat
exchanger gas pipe
thermistor connected to
X12A of outdoor unit
PC board
(A1P)?
YES
Is the
resistance
measured after
removing the thermistor
(R4T) from outdoor unit PC
board normal?
(3.5 kΩ to
360 kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P251.
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect connector and operate
unit again.
Replace thermistor (R4T).
Replace outdoor unit PC board
(A1P).
(V3075)
179