Daikin VRV - Page 85

Si30-408 Method of Troubleshooting
Troubleshooting 81
2. Voltage Characteristic of Pressure Sensor (R22, R407C)
High pressure P
H = (VH - 0.5) × 0.98
Low pressure P
L = (VL - 0.5) × 0.98 / 3
P
H
: Detection pressure [High pressure side] MPa
P
L
: Detection pressure [Low pressure side] MPa
V
H
: Output voltage [High pressure side] V
DC
V
L
: Output voltage [Low pressure side] V
DC
Output voltage (VH, VL)
0
5.1 0.5
0
1234
V
DC
10.2 1.0
15.3 1.5
30.6 3.0
25.5 2.5
20.4 2.0
(kg/cm
2
) MPa
P
H, PL
Detection pressure
High pressure
(P
H)
Low pressure
(P
L)