Daikin RQYQ140-180PY1, Руководство по обслуживанию, Страница: 144 / 231

Troubleshooting by Remote Controller SiBE341001
135 Troubleshooting
Troubleshooting
∗
2: Voltage measurement point
∗
2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P201.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Are the characteristics of the
high pressure sensor normal?
(Make a comparison between
the voltage characteristics (
∗
2)
and the gauge pressure.)
NO
Replace the high pressure sensor.
Confirm which high pressure
sensor is abnormal using
outdoor unit "monitor mode".
(Refer to P.106~P.107)
1. Set the high pressure gauge
upright.
2. Connect the checker for
VRV to the gauge.
If the PCB pressure detection
normal? (Make a comparison
between the checker pressure
data and the voltage
characteristics (
∗
2).)
Reset the operation, and then
restart the outdoor unit.
Are the
characteristics of
the high pressure
sensor normal?
Replace the main PCB.
Replace the high pressure sensor.
Replace the main PCB.
NO
NO
YES
YES
YES
∗
1: Pressure sensor subject to malfunction code
Malfunction code Pressure sensor subject to malfunction code Electric symbol
JA High pressure sensor S1NPH
Outdoor unit PCB (A1P)
+5V
GND
Micro-computer
A/D input
∗
2 Measure DCvoltage here.
X32A
(4)
(3)
(2)
(1)
Red
Black
White
High
pr
essu
re
sen
s
or