Malfunction Of Thermistor System - Daikin SkyAir Super Inverter 70 D Series Service Manual

Troubleshooting by Remote Controller Display / LED Display

6.24 Malfunction of Thermistor System

H9,J3,J5,J6
Remote
Controller
Display
Outdoor Unit LED
Refer to P.132
Display
Applicable
RZP71~140D
Models
Method of Abnormality is detected according to the temperature detected by each individual thermistor.
Malfunction
Detection
Malfunction
When thermistor is disconnected or short-circuited during operation
Decision
Conditions
Supposed
Causes
Troubleshooting
162
Faulty thermistor
Faulty connection of connector
Faulty outdoor unit PC board (control PC board)
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Check connectors for
connection.
Normal?
YES
Remove thermistor from
outdoor unit PC board,
then measure the
resistance using a tester.
Normal?
YES
H9 : Malfunction of outdoor temperature thermistor system
J3 : Malfunction of discharge pipe thermistor system
J5 : Malfunction of suction pipe thermistor system
J6 : Malfunction of heat exchange thermistor
0
See Check No. 12 for "Thermistor temperature/Resistance characteristics".
NO
Connect correctly.
NO
Replace the thermistor.
Replace the outdoor unit PC board
(control PC board).
SiE25-110
(S2589)
Troubleshooting