Daikin VRVIII-S, Service Manual

Page: 163 / 266

Troubleshooting by Indication on the remote control SiENBE34-703
152 Troubleshooting
3.25 “
J6
” Outdoor Unit: Malfunction of Thermistor (R6T) for
Outdoor Unit Heat Exchanger
remote control
Display
J6
Applicable
Models
RXYSQ4~6P
Method of
Malfunction
Detection Malfunction is detected from the temperature detected by the heat exchanger thermistor.
Malfunction
Decision
Conditions When a short circuit or an open circuit in the heat exchange thermistor is detected.
Supposed
Causes
!
Defect of thermistor (R6T) for outdoor unit heat exchanger
! Defect of outdoor unit PC board (A1P)
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P225.
(V3074)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Resistance is
normal when
measured after
disconnecting the thermistor
(R4T) from the outdoor unit PC
board.
(3.5k
Ω
~360k
Ω
)
Replace outdoor unit PC board
(A1P).
Connect the thermistor and turn on
again.
Replace the thermistor (R6T).
Connector is
connected to X13A of
outdoor unit PC board
(A1P).
YES
YES
NO
NO