Ecoer 2436 Installation Instructions Manual page 26

ESI Outdoor Unit Installation Instruction
14.3 Major components function
Liquid Stop Valve
Gas Stop Valve
Gauge Port
LP
ACC
Name
Inverter compressor
Inverter fan
Electronic expansion valve
4-way valve
Thermistor
High pressure sensor
Low pressure sensor
Accumulator
Manufacturer reserves the right to change specifications or designs without notice.
TL
Figure 14-1 Refrigerant Circuit
Symbol Function
Adjusts refrigerant flow rate by changing the frequency(RPS) based on
INV
objective pressure.
Outputs heat exchanger capacity by adjusting the motor rotation speed
FAN
based on operating pressure.
1) Fully open during cooling mode and defrost operation.
EEV
2) Control compressor discharge superheat in heating mode.
Switches the operation mode between heating and cooling (including
ST1
defrost control).
TH Uses to control defrosting during heating operation.
TA Uses to detect outdoor air temperature and control fan speed.
Uses to detect compressor suction temperature and calculate suction
TS
superheat (SH).
TL Uses to detect liquid line temperature and calculate sub-cooling (SC).
Uses to detect compressor discharge temperature and calculate discharge
TD
superheat (DSH).
TF Uses to detect heat sink temperature of inverter module.
HP Uses to detect high pressure.
LP Uses to detect low pressure.
ACC Uses to store excess refrigerant.
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EEV
TH
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TA
FAN
Heat Exchanger
ST1
TD
HP
INV
TS
08.2018