Daikin SkyAir RZQ200 · 250C7Y1B Service Manual page 150

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.
The high
pressure sensor is
connected to X32A of
outdoor unit PC
board (A1P).
YES
Measure the voltage (VH)
between the pins # (1) and (3)
of the above connector ∗1.
YES
Is the
relationship
between high pressure
and VH normal?
∗2
NO
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-0.5
NO
YES
PH
0 0.5 1 1.5 2 2.5 3 3.5
Output voltage V V
Diagnosis by Remote Controller
Connect the high pressure sensor
and turn on again.
Replace outdoor unit PC board
(A1P).
Replace the high pressure sensor.
PH = 1.38V-0.69
PH : Detected pressure (MPa)
V : Output Voltage (V)
4
DC
(V2806)
139