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

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