H9", "J3", "J5", "J6", "J7", "J8" Malfunction Of Thermistor System - Daikin SkyAir Service Manual

Troubleshooting by Remote Controller Display / LED Display
5.26 "H9", "J3", "J5", "J6", "J7", "J8" Malfunction of Thermistor
System
H9, J3, J5, J6, J7, J8
Remote
Controller
Display
Applicable RZQ(S)71~140
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
* Refer to P228~229 for "Thermistor temperature/Resistance characteristics".
194
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
J7 : Malfunction of subcooling heat exchanger thermistor
J8 : Malfunction of liquid thermistor
NO
Connect correctly.
NO
Replace the thermistor.
Replace the outdoor PC board
(A1P).
SiBE28-804
Troubleshooting