3. OUTDOOR UNIT & BRANCH BOX
SYMBOL DESCRIPTION

Outdoor unit
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MARK DESCRIPTION
HEX Heat exchanger
OS Oil separator
SCHEX Sub-cool heat exchanger
HPS High pressure sensor
HP-SW High pressure sensor switch
LPS Low pressure sensor
4WV 4-way valve
3WV 3-way valve
EEV 1 Electric expansion valve 1
EEV 2 Electric expansion valve 2
SV Solenoid valve
TH 1 Discharge temperature thermistor
TH 2 Compressor temperature thermistor
TH 3 Suction temperature thermistor
TH 4 Outdoor temperature thermistor
TH 5 Heat exchanger (outlet) thermistor
TH 6 Sub-cool heat exchanger (inlet) thermistor
TH 7 Sub-cool heat exchanger (outlet) thermistor
TH 8 Liquid temperature thermistor
Branch box

MARK DESCRIPTION
EEV 3 Electric expansion valve 3
EEV 4 Electric expansion valve 4
TH 9 Branch box liquid temperature thermistor
TH 10 Branch box gas temperature thermistor
Indoor unit

MARK DESCRIPTION
HEX Heat exchanger
TH 11 Heat exchanger (middle) thermistor
TH 12 Room temperature thermistor
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OUTDOOR
UNITS
OUTDOOR
UNITS