Daikin SkyAir Super Inverter 70 D Series Service Manual page 203

Troubleshooting by Remote Controller Display / LED Display
Check No. 13 Voltage Measuring Method
Measure the voltage (DC) between pins 2 and 3 of the connector.
n
For RZP71~140D models
Microcomputer
A/D input
Detected pressure
194
Outdoor unit PC board
+5V
Measure voltage (DC) here.
P
L
MPa
3.0
2.5
2.0
1.5
1.0
0.5
0 1 2
Output voltage (V
(Blue)
„
Red
ƒ
Black
Low pressure sensor
‚
White

Low pressure P
P : Detected pressure (low pressure side)MPa
L
V : Output voltage (low pressure side)V
L
Low pressure (P )
L
3 4
, V )
V
H L
DC
= (V - 0.5) x 0.98/3
L L
DC
Troubleshooting
SiE25-110
(S2680)