Daikin VRV III REYQ8PY1 Service Manual page 291

Troubleshooting by Indication on the Remote Controller
Troubleshooting
∗
2: Voltage measurement point
∗
2: Refer to "Pressure Sensor, Pressure / Voltage Characteristics" table on P419.
280
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Confirm which high pressure
sensor is abnormal using
outdoor unit "monitor mode".
(Refer to page 226~227)
1.Set the high pressure gauge
upright.
2.Connect the checker for
VRV to the gauge.
Are
the characteristics
of the high pressure sensor
normal? (Make a comparison
between the voltage characteristics
(∗2) and the gauge
pressure.)
YES
If
the PC board
pressure detection normal?
(Make a comparison between the
checker pressure data and the
voltage characteristics
(∗2).)
YES
Reset the operation, and then
restart the outdoor unit.
Are the
characteristics of the high
pressure sensor
normal?
YES
∗1: Pressure sensor subject to malfunction code
Malfunction code Pressure sensor subject to malfunction code
JA
NO
NO
NO
High pressure sensor
Si37-701
Replace the high pressure sensor.
Replace the main PC board.
Replace the high pressure sensor.
Replace the main PC board.
Electric symbol
S1NPH
Troubleshooting
(V2806)