Daikin VRVIII-S, Service Manual

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SiENBE34-703 Troubleshooting by Indication on the remote control
Troubleshooting 151
3.24 “
J5
” Outdoor Unit: Malfunction of Thermistor (R3T, R5T)
for Suction Pipe 1, 2
remote control
Display
J5
Applicable
Models
RXYSQ4~6P
Method of
Malfunction
Detection Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2.
Malfunction
Decision
Conditions When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Supposed
Causes
!
Defect of thermistor (R3T, R5T) for outdoor unit suction pipe
! Defect of outdoor unit PC board (A1P)
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P225.
(V3073)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Replace outdoor unit PC board
(A1P).
Connect the thermistor and turn
on again.
Replace the thermistor (R3T, R5T).
Connector of the
thermistor for suction
pipe1, 2 is connected to
X12A of outdoor unit
PC board
(A1P).
Resistance is
normal when
measured after
disconnecting the thermistor
(R3T, R5T) from the
outdoor unit PC board.
(3.5k
Ω
~360k
Ω
)
YES
YES
NO
NO