Specifications

SiBE341027 Troubleshooting by Remote Controller
Service Diagnosis 131
Troubleshooting
Note:
*1. Pressure sensor subject to error code
*2. Voltage measurement point
Refer to P.191
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.
1. Mount the high pressure
gauge.
2. Connect the checker for
VRV.
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 outdoor unit PCB.
Replace the high pressure sensor.
Replace the outdoor unit PCB.
NO
NO
YES
YES
YES
Malfunction code Pressure sensor subject to error code Electric symbol
JA High pressure sensor S1NPH
Outdoor unit PCB (A1P)
+5V
GND
Micro-computer
A/D input
Measure DC voltage here.
X32A
(4)
(3)
(2)
(1)
Red
Black
White
High pressure sensor
Connector for high
pressure sensor
CHECK 12