(R7T Or R15T) - Daikin VRV III REYQ8PY1 Service Manual

Si37-701
J8
3.31 " " Outdoor Unit:

(R7T or R15T)

J8
Remote
Controller
Display
Applicable REYQ8P~48P
Models
Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor.
Malfunction
Detection
Malfunction When the liquid pipe thermistor is short circuited or open.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗
Troubleshooting
Malfunction of Liquid Pipe Thermistor 2
Faulty liquid pipe thermistor 2 (R7T or R15T)
Faulty outdoor unit PC board
Defect of thermistor connection
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 P226~227)
Is
the connector
for liquid pipe
thermistor connected to
X30A on outdoor
unit PC board
(A1P)?
YES
Is the
resistance
measured after
removing the thermistor
(R7T or R15T) from outdoor
unit PC board normal?
(1.8kΩ to
800kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P417.
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the connector and
operate unit again.
Replace thermistor (R7T or R15T).
Replace outdoor unit PC board
(A1P).
(V3075)
277