Daikin VRV - WII Service Manual page 207

Troubleshooting by Indication on the Remote Controller
Troubleshooting
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194
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
The low
pressure sensor is
connected to X45A (blue)
of outside unit PC
board (A1P).
YES
The
relationship
between the ∗1
VH and low pressure is
normal (see ∗2) when voltage
is measured between X45A pins
(2) and (3) of outside unit
PC board (A1P)
(see ∗1).
NO
1: Voltage measurement point
2: Refer to pressure sensor, pressure / voltage characteristics table on P280.
NO
YES
SiUS30-604
Connect low pressure sensor
property and restart system.
Replace outside unit PC board
A1P.
Replace the low pressure sensor.
Troubleshooting
(V2808)