Troubleshooting by Indication on the Remote Controller
254
Troubleshooting
Note:
∗1: Compare pressure sensor measurements with
pressure gauge readings.
(For measurements by a pressure sensor, measure
voltage between connectors (2) and (3) and convert
it to pressure in accordance with .)
∗2: Compare low pressure measured by the Service
Checker with pressure sensor measurements (∗1).
NO
Are
the low
pressure sensor
characteristics normal?
(∗1)
Replace the low
pressure sensor.
NO
YES
YES
Is the PCB
detector pressure
normal? (∗2)
Replace the main
PCB.
CHECK 2
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
In cooling
Set up a pressure
gauge in the service
port on the low
pressure side.
Connect the Service
Checker.
Reset operation with a
remote controller and
restart operation.
CHECK 12
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