Daikin RXYQ96PYDN Service Manual page 405

Troubleshooting by Indication on the Remote Controller
Troubleshooting
∗1: Voltage measurement point
∗2: Refer to "Pressure Sensor, Pressure / Voltage Characteristics" table on P525.
390
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Confirm which low pressure
sensor is abnormal using
outdoor unit "monitor mode".
(Refer to Page 334~335)
1.Set the low pressure gauge
upright.
2.Connect the checker for
VRV to the gauge.
Are
the characteristics
of the low pressure sensor
normal? (Make a comparison
between the voltage characteristics
(∗1) and the gauge
pressure.)
YES
If
the PC board
pressure detection normal?
(Make a comparison between the
checker pressure data and the
voltage characteristics
(∗1).)
YES
Reset the operation, and then
restart the outdoor unit.
Are the
characteristics of the low
pressure sensor
normal?
YES
NO
NO
NO
SiUS34-801A_b
Replace the low pressure sensor.
Replace the main PC board.
Replace the low pressure sensor.
Replace the main PC board.
Troubleshooting
(V2808)