Daikin RXYQ72, Serivce Manual

Page: 166 / 273

SiUS39-601 Troubleshooting by Indication on the Remote Controller
Troubleshooting 155
2.28
“
J7
”
Malfunction of Receiver Outlet Liquid Pipe
Thermistor (R6T)
Remote
Controller
Display
J7
Applicable
Models RXYQ72M, 96M
Method of
Malfunction
Detection Malfunction is detected according to the temperature detected by receiver outlet liquid pipe
thermistor.
Malfunction
Decision
Conditions When the receiver outlet liquid pipe thermistor is short circuited or open.
Supposed
Causes
„
Faulty receiver outlet liquid pipe thermistor (R6T)
„
Faulty outdoor unit PC board
Troubleshooting
∗
1: Refer to thermistor resistance / temperature characteristics table on P239.
(V3075)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
resistance
measured after
removing the thermistor
(R6T) from outdoor unit PC
board normal?
(3.5 k
Ω
to
360 k
Ω
)
∗
1
Replace outdoor unit PC board
(A1P).
Connect thermistor and operate
unit again.
NO
NO
Replace thermistor (R6T).
YES
YES
Is
the connector
for receiver
outlet liquid pipe thermistor
connected to X37A on
outdoor unit PC
board (A1P)?
Caution