Daikin SUPER MULTI NX G Series Service Manual page 129

SiUS12-928_A
Troubleshooting
Check No.07
Refer to P.153
Check No.08
Refer to P.154
Check No.14
Refer to P.157
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
∗ An input overcurrent may result from wrong internal wiring. If the wires have been disconnected and
reconnected, and the system is interrupted by an input overcurrent, take the following procedure.
Check No. 07
Check the installation condition.
Start operation and measure the
input current.
Input current flowing
above its stop level?
YES
Check No. 14
Check the main circuit electrolytic
capacitor.
Normal?
YES
Turn off the power and disconnect
the harnesses U, V, and W.
Check with the inverter checker (∗).
Any LED off?
NO
Turn off the power, and reconnect
the harnesses. Turn on the power
again and start operation.
Check No. 08
Check the discharge pressure.
NO
NO
∗ Inverter checker
Part No.: 1225477
YES
Troubleshooting
Replace the outdoor unit
PCB.
Replace the electrolytic
capacitor.
Correct the power supply or
replace the SPM or PM1.
(Replace the outdoor unit
PCB.)
(R11896)
120