(R14447)
Caution
YES
NG
NO
NO
YES
YES
YES
NO
YES
NO
NO
YES
NO
NO
YES
∗ Discharge pipe thermistor
∗ Indoor or outdoor heat exchanger thermistor
∗ Room temperature thermistor
∗ Outdoor temperature thermistor
Check for refrigerant shortage.
Change for a specified amount of
fresh refrigerant.
Replace them in position.
Open the stop valve.
Repair the pipe flare or
replace the union.
Check the power transistor
harness for looseness.
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 electronic
expansion valve.
Replace the defective
one(s).
Completed.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
OK
NO
YES
Replace the compressor.
Completed.
Check No. 12
Electronic expansion valve
functioning?
Any thermistor
disconnected?
Stop valve closed?
Oil oozing at relay
pipe connections?
Oil oozing at internal
piping?
Refrigerant shortage error
again?
Check No. 01
Check the thermistors.
Replace the outdoor unit PCB.
Error again?
Compressor vibrating
too much?
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