Daikin VRVII Manual page 194

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Caution
Confirm which low
pressure sensor is
abnormal using outdoor
unit "monitor mode".
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 and
the gauge
pressure.)
YES
Is the
PCB
pressure
detection normal?
(Make a comparison
between the checker
pressure data and
the voltage
characteristics
(∗1).)
YES
A
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
NO
Replace the low
pressure sensor.
Replace the
outdoor unit main
PCB.
189