Daikin 2MXS-N Series Service Manual page 173

SiUS121502E
Troubleshooting In case of
Check No.01
Refer to P.166
J3 error: The discharge
pipe temperature is
lower than the heat
exchanger temperature.
H9
J3
J6
J8
J9
Service Diagnosis
H9 J3 J6 J8 J9
, , , ,
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 the
heating operation.
Indoor heat
exchanger thermistor
functioning?
YES
: Outdoor temperature thermistor
: Discharge pipe thermistor
: Outdoor heat exchanger thermistor
: Liquid pipe thermistor
: Gas pipe thermistor
Troubleshooting for Outdoor Unit
NO
NO
NO
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
Replace the indoor heat
exchanger thermistor.
Replace the outdoor unit
PCB (main PCB).
(R21118)
161