J5" Outdoor Unit: Malfunction Of Thermistor (R3T, R5T) For Suction Pipe 1, 2 - Daikin FCQ18PVJU Service Manual

Troubleshooting by Indication on the Remote Controller
J5
3.24 " " Outdoor Unit: Malfunction of Thermistor (R3T, R5T)
for Suction Pipe 1, 2
J5
Remote
Controller
Display
Applicable RZQ18~30PVJU
Models
Method of
Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2.
Malfunction
Detection
Malfunction
When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Decision
Conditions
 Defect of thermistor (R3T, R5T) for outdoor unit suction pipe
Supposed
 Defect of outdoor unit P.C.B. (A1P)
Causes
Troubleshooting
Refer to Thermistor Resistance / Temperature Characteristics table on P.166.
115
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts could be damaged.
Connector
of the thermistor for
NO
suction pipe1, 2 is
connected to outdoor
unit P.C.B.
(A1P).
YES
Resistance
is normal when
measured after
NO
disconnecting the thermistor
(R3T, R5T) from the
outdoor unit P.C.B.
(3.5kΩ~
360kΩ)
YES
SiUS28-902_a
Connect the thermistor and turn
on again.
Replace the thermistor (R3T, R5T).
Replace the outdoor unit P.C.B.
(A1P).
Troubleshooting