Daikin VRV-WIII RWEYQ72PTJU Service Manual page 225

SiUS30-1301
Troubleshooting

Note:
RWEYQ72/84PTJU
RWEYQ72/84PTJU9
RWEYQ72/84PYDN
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check if power supply
voltage is 208/230V ±10%
or 460V ±10%?
YES
Is the
resistance between
terminals P and N more
than hundreds of
ohms?
YES
Turn ON again.
Measure the voltage between
terminals P and N of power
module when the compressor
is running.
The
voltage is more
than 208V for 230V units
or 460V for 460V
units.
YES
Check the connection wiring.
∗1
Is the
connection wiring
defective?
NO
1 Connector code
Model name
Troubleshooting by Indication on the Remote Controller
NO
NO
NO
YES
Connector

• X6A(A2P) 
X33A(A1P)

• X4A(A2P) 
X25A(A1P)

• X6A(A2P) 
X28A(A1P)

• X4A(A2P) 
X20A(A1P)

• X6A(A3P) 
X28A(A1P)

• X4A(A3P) 
X20A(A1P)
Correct the power
supply voltage.
Replace the inverter
PCB.
Replace the inverter
PCB.
Replace the connection
wire.
To diagnosis error
P1
code " ".
217