J9" Malfunction Of Receiver Gas Pipe Thermistor (R5T) - Daikin R-410A Service Manual

SiBE39-402A

4.25 "J9" Malfunction of Receiver Gas Pipe Thermistor (R5T)

J9
Remote
Controller
Display
Applicable
AII outdoor unit models
Models
Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor
Malfunction (= Subcooling heat exchanger gas pipe thermistor).
Detection
Malfunction
When the receiver gas pipe thermistor is short circuited or open.
Decision
Conditions
! Faulty receiver gas pipe thermistor (R5T)
Supposed
! Faulty outdoor unit PC board
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P198.
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is the
connector for
receiver gas pipe
NO
thermistor connected
to outdoor unit PC
board (A1P)
YES
Is the
resistance
measured after
NO
removing the thermistor
(R5T) from outdoor unit PC
board normal.
(3.5 kΩ to
360 kΩ)
YES
Troubleshooting by Indication on the Remote Controller
Connect thermistor and turn on
again.
Replace the thermistor (R5T).
Replace outdoor unit PC board
(A1P).
(V3075)
139