Daikin K-Series Service Manual page 114

SiBE061121.book Page 104 Monday, April 25, 2011 3:21 PM
Troubleshooting
Troubleshooting
Check No.12
Refer to P.121
Check No.15
Refer to P.123
104
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn off the power and turn it on
again.
Start operation.
∗ Running
YES
current as shown at
right with relay cable 1
or 2?
NO
Check No. 12
Check the capacitor voltage.
YES
320 ± 50 VDC?
NO
Measure the rectifier input voltage.
Voltage within the
YES
allowable range (Supply
voltage ± 15%)?
NO
Current Capacitor charged when
(guideline) the indoor unit or outdoor
unit main relay turns on
Rising with increasing
frequency
Time
2 sec
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter checker (∗).
YES
Any LED OFF?
NO
Turn off the power and reconnect
the harnesses. Then turn on the
power again and restart operation.
YES
Compressor running?
NO
SiBE061121
Replace the outdoor unit
PCB.
∗ Inverter checker Part
No.: 1225477
Correct the power supply or
replace the PM1.
(Replace the outdoor unit
PCB.)
Replace the outdoor unit
PCB.
Replace the compressor.
Replace the outdoor unit
PCB.
Check the supply voltage.
(R14627)
Service Diagnosis