Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 190

SiUS12-928_B
Troubleshooting
Check No.01
Refer to P.191
J3 error: The discharge
pipe temperature is
lower than the heat
exchanger temperature.
H9 : Outdoor temperature thermistor
J3 : Discharge pipe thermistor
J6 : Outdoor heat exchanger thermistor
J8 : Liquid pipe thermistor
J9 : Gas pipe thermistor
P4 : Radiation fin thermistor
In case of P4 for 24/32 class models
Note:
Replace the outdoor unit PCB.
Note: For 3MXS24JVJU
The short thermistors which locate near the connectors [S92] and [S93] each are indispensable for
control. When you check the liquid pipe thermistors or the gas pipe thermistors, check the short
thermistor also.
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Turn on the power again.
Error displayed
again on remote
controller?
YES
Check No. 01
Check the thermistor resistance
value.
Normal?
YES
Cooling: Outdoor heat
exchanger
thermistor
Heating: Indoor heat
exchanger
thermistor
Check No. 01
Check the indoor heat exchanger
thermistor resistance value in
heating operation.
Indoor heat
exchanger thermistor
functioning?
YES
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
NO
NO
NO
Short thermistor
Troubleshooting for Outdoor Unit
Reconnect the connectors
or thermistors.
Replace the defective
thermistor(s).
∗ Outdoor temperature
thermistor
∗ Discharge pipe thermistor
∗ Outdoor heat exchanger
thermistor
∗ Liquid pipe thermistor
∗ Gas pipe thermistor
∗ Radiation fin thermistor
Replace the indoor heat
exchanger thermistor.
Replace the outdoor unit
PCB.
[S92], [S93]
(R17392)
(R17366)
182