Troubleshooting by Remote Controller Si20-701_B
169
Troubleshooting
Refer to P.470.
Refer to P.485.
Check if
the “low
pressure” value
and the actual
measurement value by
pressure sensor
are the same.
Are the
characteristics
of the low pressure
sensor normal?
(∗1)
Is
the stop valve
open?
NO
YES
YES
NO
Replace the low
pressure sensor.
Replace the
outdoor unit main
PCB.
Connect the service checker to compare the “low
pressure” value checked with the Service Checker
and the actual measurement value by pressure
sensor.
Service Checker
(1) Mount a pressure gauge on the low pressure
service port.
(2) Reset the operation using the remote controller,
and then restart the operation.
NO
YES
Open the stop
valve.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
· The low pressure sensor is normal, and the
pressure detected with the PCB is also normal.
· The low pressure has really become low.
Remove the causes by which the low
pressure has become low.
CHECK 15
CHECK 7
CHECK 7
CHECK 15
To Next Page
Loading...
Need help?
General
