Daikin RQYQ140-180PY1 Service Manual page 146

Troubleshooting by Remote Controller
∗
1: Voltage measurement point
∗
2: Refer to "Pressure Sensor, Pressure / Voltage Characteristics" table on P201.
137
Outdoor unit PCB (A1P)
GND
Micro-computer
A/D input
∗2 Measure DC voltage here.
+5V
X31A
(4) Red
(3)
Black
(2)
White
(1)
SiBE341001
Troubleshooting