Daikin K-Series Service Manual page 111

SiBE061121.book Page 101 Monday, April 25, 2011 3:21 PM
SiBE061121
Troubleshooting 50 class
Check No.15
Refer to P.123
Check No.18
Refer to P.126
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn off the power.
Check the power supply voltage.
NO
Voltage as rated?
YES
Check No. 18
Check the discharge pressure.
NO
OK?
YES
Check the connection.
Electrical
components or
NO
compressor harnesses
connected as
specified?
YES
Turn on the power.
Check the electrolytic capacitor
voltage.
NO
320 ± 50 VDC?
YES
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter checker (∗).
YES
Any LED OFF?
NO
∗ Inverter checker
Part No.: 1225477
Troubleshooting
Correct the power supply.
Replace the stop valve.
Reconnect them as
specified.
Replace the outdoor unit
PCB.
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
(R14626)
101