Daikin SUPER MULTI NX CTXS07JVJU Service Manual page 166

SiUS12-928_B
Troubleshooting
24/32 class
Check No.01
Refer to P.191
Check No.12
Refer to P.194
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Any thermistor
disconnected?
NO
Stop valve closed?
NO
Check for refrigerant shortage.
Oil oozing at relay
pipe connections?
NO
Oil oozing at internal
piping?
NO
Check No. 12
Outdoor electronic
expansion valve
functioning?
YES
Change for a specified amount of
fresh refrigerant.
Refrigerant shortage error
again?
NO
YES
∗ Discharge pipe thermistor
∗ Indoor or outdoor heat exchanger thermistor
∗ Room temperature thermistor
∗ Outdoor temperature thermistor
YES
YES
YES
Compressor vibrating
too much?
NO
NO
YES
Check No. 01
Check the thermistors.
OK
Replace the outdoor unit PCB.
Error again?
NO
Troubleshooting for Outdoor Unit
Replace the thermistor(s)
position.
Open the stop valve.
Repair the pipe flare or
replace the union.
YES
Check the harness for
loosening.
Correct it as required. Also
replace the cracked pipe.
Check the pipes for
improper contact. Correct
them as required. Also
replace the cracked pipe.
Replace the outdoor
electronic expansion valve.
NG
Replace the defective
thermistor(s).
YES
Replace the compressor.
Completed.
Completed.
(R17254)
in
158