Daikin R71FUV1 Service Manual page 264

Troubleshooting by Remote Controller
Troubleshooting
Caution
The high
pressure sensor
is connected to X32A
of outdoor unit
PCB.
YES
Measure the voltage (VH)
between the pins # (1)
and (3) of the above
connector (∗1).
YES
Is the
relationship
between high
pressure and VH
normal?
(∗2)
NO
Note:
∗1: Voltage measurement point
Outdoor unit PCB
Micro-computer
A/D input
∗2 Measure DC voltage here.
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
GND
+5V
Connector Red
(4)
(3)
(2)
(1)
Si20-701_B
Connect the high
pressure sensor
and turn ON
again.
Replace the
outdoor unit
PCB.
Replace the high
pressure sensor.
Red
Black
White
257