Ca" Indoor Unit: Malfunction Of Thermistor For Discharge Air - Daikin VRVIII-S Service Manual

Troubleshooting by Indication on the remote control
3.12 "CA " Indoor Unit: Malfunction of Thermistor for Discharge
Air
CA
remote control
Display
Applicable
AII indoor unit models
Models
Method of
Malfunction detection is carried out by temperature detected by discharge air temperature
thermistor.
Malfunction
Detection
Malfunction
When the discharge air temperature thermistor becomes disconnected or shorted while the unit
Decision is running.
Conditions
Supposed ! Defect of indoor unit thermistor for air outlet
! Defect of indoor unit PC board
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P225.
136
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Connector is
NO
connected to the
indoorunit PC board.
YES
Resistance is normal
when measured after
NO
disconnecting the
thermistor from the
indoor unit PC board.
(7.2kΩ~112kΩ)
YES
SiENBE34-703
Connect the thermistor and turn
on again.
Replace the thermistor.
Replace the indoor unit PC board.
(V2786)
Troubleshooting