Daikin R71FUV1 Service Manual page 162

Troubleshooting by Remote Controller
A
· The high pressure sensor is normal, and the
pressure detected with the PCB is also normal.
· The high pressure has really become high.
Remove the causes by which the high
CHECK 14
pressure has become high.
Note:
∗1: Make a comparison between the voltage of the
pressure sensor and that read by the pressure gauge.
(As to the voltage of the pressure sensor, make
measurement of voltage at the connector, and then
convert it to pressure according to information on
P.471.)
∗2: Make a comparison between the high pressure value
checked with the Service Checker and the voltage of
the pressure sensor (∗1).
∗3: Make measurement of voltage of the pressure
sensor.
Micro-computer
A/D input
Make measurement of DC
voltage between these wires.
CHECK 14
+5V
Connector for high
pressure sensor (Red)
Refer to P.483.
(4)
Red
(3)
Black
(2)
(1)
White
Si20-701_B
High
pressure
sensor
155