J4" Outdoor Unit; Heat Exchanger Gas (R2T Or R11T) - Daikin VRV III REYQ8PY1B Service Manual

SiBE37-701
J4
3.27 " " Outdoor Unit:
for Heat Exchanger Gas (R2T or R11T)
J4
Remote
Controller
Display
Applicable REYQ8P~48P
Models
Method of Detect malfunction based on the temperature detected by each thermistor.
Malfunction
Detection
Malfunction In operation, when a thermistor is disconnected or short circuits.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting
Malfunction of Temperature Sensor
Defective connection of thermistor
Defective thermistor
Defective outdoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Confirm which thermistor is
abnormal using outdoor unit
"monitor mode".
(Refer to P248~249)
Connector is
connected to X30A of
outdoor PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T or R11T) from the
outdoor unit PC
board. (1.8kΩ
to 800kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P437.
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the connector and turn on
again.
Replace the thermistor (R2T or
R11T)
Replace outdoor unit PC board
(A1P).
(V3070)
295