Daikin RZQ100B8V3B Service Manual page 263

ESIE05-03
5.9.5 Outdoor unit: Check Low Pressure Sensor
Measure the voltage (DC) between pins 2 and 3 of the connector.
n
Microcomputer
A/D input
Detected Pressure
(Kg/cm²)
P
P
V: Voltage (V)
Part 3 – Troubleshooting
For RZQ71 models
Outdoor unit PC board
+5V
Measure voltage (DC) here.
P , P
H L
MPa
51.0 5.0
45.9 4.5
40.8 4.0
35.7 3.5
30.6 3.0
25.5 2.5
20.4 2.0
15.3 1.5
10.2 1.0
5.1 0.5
0 0
-5.1 -0.5
-0.5 0 0.5 1 1.5
Output voltage (V
= 0.57V-0.28 P
L L
: Low pressure (MPa) V : Output voltage (Low side) Vdc
L L
Additional Checks for Troubleshooting
(Blue)
„
Red
ƒ
Black
Low pressure sensor
‚
White

Low Pressure (P )
L
2 2.5 3 3.5 4
Vdc
)
L
= Detected Presuure (Low side) MPa
(V3053)
1
3 3
(S2680)
4
5
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