Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 152

SiBE26-701
Troubleshooting
∗
1: Voltage measurement point
∗
2: "Pressure Sensor", pressure/voltage characteristics table.
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check if the connector for
the low-pressure sensor
(X31A) is correctly
connected to the outdoor
unit PC board (A1P)
Is it connected
correctly?
YES
Measure the voltage (V)
between the pins # (2) and
(3) of the above connector
(∗1).
YES
Is the relation
between the pressure and the
voltage normal?
(∗2).
NO
NO
YES
1.5
PL
1.0
0.5
0
-0.5
-0.5 0 0.5 1 1.5 2 2.5
Output voltage V
PL = 0.57V-0.28
PL : Detected pressure (MPa)
V : Output Voltage (V)
Diagnosis by Remote Controller
Connect correctly
Replace outdoor unit PC board
(A1P).
Replace the low pressure sensor.
3 3.5 4
Vcc
(V2808)
141