Daikin REYQ8-48PY1B - (R6 T, R9 T or R14 T)

Troubleshooting by Indication on the Remote Controller SiBE37-701_B
311 Troubleshooting
3.33
“
J7
”
Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1
(R6T, R9T or R14T)
Remote
Controller
Display
J7
Applicable
Models
REYQ8P~48P
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by liquid pipe thermistor.
Malfunction
Decision
Conditions
When the liquid pipe thermistor is short circuited or open circuited.
Supposed
Causes

Faulty liquid pipe thermistor 1 (R6T), (R9T) or (R14T)

Faulty outdoor unit PCB

Defect of thermistor connection
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P450.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the connector
for liquid pipe
thermistor
connected to
X30A on outdoor
unit PCB
(A1P)?
NO
Connect the connector and
operate the unit again.
Confirm which thermistor is
abnormal using outdoor unit
"monitor mode".
(Refer to P.255~P.256)
Is the resistance
measured after removing
the thermistor (R6T)
(R9T) or (R14T) from
outdoor unit PCB normal?
(1.8k
Ω
to 800k
Ω
)
YES
NO
YES
Replace the thermistor (R6T)
(R9T) or (R14T).
Replace the outdoor unit PCB
(A1P).