Troubleshooting by Indication on the Remote Controller
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Is the stop
Mount a pressure gauge on the low pressure
Reset the operation using the remote
controller, and then restart the operation.
characteristics of the
low pressure sensor
Connect the service checker to compare the "low pressure" value and the
actual measurement value by pressure sensor (*1) by using the service
Check if the
"low pressure" value and
the actual measurement value by
pressure sensor are
· The low pressure sensor is normal, and the pressure detected with the PCB
is also normal.
· The low pressure has become very low.
Referring to information on P.211, remove the cause of the
increased low pressure.
*1: Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge.
As to the voltage of the pressure sensor, take measurement of voltage at the connector, and then convert it to
pressure according to information on P.243.
*2: Take measurement of voltage of the pressure sensor.
Make measurement of DC voltage between these wires.
Connector for low pressure sensor
Open the stop valve.
Replace the low pressure
Replace the main PCB (A1P).