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11. High and Low Pressure Sensors
The outdoor unit connection ports for the high and low pressure sensors employ Schrader-type push-to-release
valves. Therefore it is not necessary to recover refrigerant when removing and installing them.
11-1. Removing the High Pressure Sensor
(1)
Follow the instructions in "1. Removing Panels" and "2. Removing Electrical Component Box and Duct"
and remove the corresponding components from the outdoor unit where the high pressure sensor will be
removed.
(2)
Disconnect the high pressure sensor connector (3P) (BLK) from terminal CN009 on the outdoor unit control
PCB of the outdoor unit where the high pressure sensor will be removed.
(3)
Use 2 adjustable wrenches in combination to remove the high pressure sensor.
When removing the high pressure sensor, internal pressure will be applied by the
refrigerant in the outdoor unit. The high pressure sensor connection port on the
CAUTION
outdoor unit employs a Schrader-type valve.
11-2. Removing the Low Pressure Sensor
(1)
Follow the instructions in "1. Removing Panels" and "2. Removing Electrical Component Box and Duct " and
remove the corresponding components from the outdoor unit where the low pressure sensor will be removed.
* If there is sufficient space to allow removal of the left-side panel, then it is possible to remove the low
pressure sensor without removing the electrical component box and duct.
(2)
Disconnect the low pressure sensor connector (3P) (WHT) from terminal CN024 on the outdoor unit control
PCB of the outdoor unit where the low pressure sensor will be removed.
(3)
Use 2 adjustable wrenches in combination to remove the low pressure sensor.
When removing the low pressure sensor, internal pressure will be applied by the
CAUTION
refrigerant in the outdoor unit. The low pressure sensor connection port on the
outdoor unit employs a Schrader-type valve.
11-3. Installing the High and Low Pressure Sensors
(1)
Use 2 adjustable wrenches in combination to install the high and low pressure sensors.
Low pressure
sensor
Fig. 27
2 - 35
3-WAY ECO-i SYSTEM
Outdoor Unit Repair Procedures
High pressure
sensor
2
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