Daikin VRVIII-S, Service Manual

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Troubleshooting by Indication on the remote control SiENBE34-703
134 Troubleshooting
3.10 “
C5
” Indoor Unit: Malfunction of Thermistor (R3T) for Gas
Pipes
remote control
Display
C5
Applicable
Models
All indoor unit models
Method of
Malfunction
Detection Malfunction detection is carried out by temperature detected by gas pipe thermistor.
Malfunction
Decision
Conditions When the gas pipe thermistor becomes disconnected or shorted while the unit is running.
Supposed
Causes
!
Defect of indoor unit thermistor (R3T) for gas pipe
! Defect of indoor unit PC board
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P225.
(V2785)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Caution
Replace the indoor unit PC board.
Connect the thermistor and turn
on again.
Replace the thermistor (R3T).
Resistance is
normal when
measured after
disconnecting the
thermistor (R3T)
from the indoor
unit PC board.
(0.6k
Ω
~360k
Ω
)
Connector is
connected to X11A of
the indoor unit PC
board.
YES
YES
NO
NO