Daikin K-Series Service Manual page 125

SiBE061121.book Page 115 Monday, April 25, 2011 3:21 PM
SiBE061121
Troubleshooting
Check No.01
Refer to P.119
Check No.12
Refer to P.121
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
YES
Any thermistor
disconnected?
∗ Discharge pipe thermistor
∗ Indoor or outdoor heat exchanger thermistor
∗ Room temperature thermistor
NO
∗ Outdoor temperature thermistor
YES
Stop valve closed?
NO
Check for refrigerant shortage.
YES
Oil oozing at relay
pipe connections?
NO
YES
Oil oozing at internal
piping?
NO
Check No. 12
NO
Outdoor electronic expansion
valve functioning?
YES
Change for a specified amount of
fresh refrigerant.
YES
Refrigerant shortage error
again?
NO
YES
Compressor vibrating
too much?
NO
NG
Check No. 01
Check the thermistors.
OK
Replace the outdoor unit PCB.
YES
Error again?
NO
Troubleshooting
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).
Replace the compressor.
Completed.
Completed.
(R14447)
115