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2WAY VRF SYSTEM
Outdoor Unit Repair Procedures
2WAY VRF SYSTEM
Outdoor Unit Repair Procedures
When welding at the time of replacing the peripheral parts of electronic expansion valve, etc. and fusible plugs,
be sure to protect them from the heat affect.
10. Replacing Peripheral Parts of Fusible Plug
If the fusible plugs are affected by the heat, refrigerant leaks may occur.
CAUTION
Fusible Plug
Fusible Plug
Type: 72, 96
Type: 120, 144
11. High and Low Pressure Sensors
2WAY VRF SYSTEM
Outdoor Unit Repair Procedures
(1) Follow the instructions in “1. Removing Panels” and remove the corresponding components from the outdoor unit
where the high pressure sensors will be removed.
(2) Disconnect the high (3P) & low (4P) pressure sensors’ connector sockets (BLK) & (WHT) from terminals on the
outdoor unit control PCB of the outdoor unit where the high & low pressure sensors will be removed.
(3) Use 2 adjustable wrenches in combination to remove the high & low pressure sensors.
11. High and Low Pressure Sensors
Please make sure the refrigerant is recovered before removing the sensors
the connection port does not employ a Schrader-type valve.
CAUTION
11-1. Removing the High and Low Pressure Sensors
(1) Use 2 adjustable wrenches in combination to install the high and low pressure sensors.
11-2. Installing the High and Low Pressure Sensors
Type: 72, 96
The connection ports for the high and low pressure sensors do not employ Schrader-type push-to-release
valves. Therefore it is necessary to recover refrigerant when removing and installing them.
Or it is one option to just disconnect the wire from failed sensor from PCB, and add a new sensor at high/low
pressure sampling port.
If you decide to literary replace the sensor, please first recover refrigerant from outdoor unit and then please
follow the following steps.
Low Pressure Sensor
High Pressure Sensor
SM830237-07_北米向け2WAY_VRF.indb 37
18/06/18 18:48:25
