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Explanation of functional parts
Functional part na
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Solenoid valve
(Start compensation valve of compressor)
(Connector CN312: Red)
1) For gas balance start
2) High pressure release function
3) Low pressure release function
4-way valve
(Connector CN317: Blue)
1) Cooling / heating exchange
2) Reverse defrost
Pulse motor
valve
PMV1
(Connector CN300: White)
1) Super heat control function in heating operation
2) Liquid line shut-down function while follower unit stops
3) Subcool adjustment function in cooling operation
Temp. sensor
TD
(Connector CN502: White)
1) Protection of compressor discharge temp.
2) Used for discharge temperature release
TS
(Connector CN505: White)
1) Controls PMV super heat in heating operation
TE
(Connector CN520: Green)
1) Controls defrost in heating operation
2) Controls outdoor fan in heating operation
TL
(Connector CN523: White)
1) Detects subcool in cooling operation
TO
(Connector CN507: Yellow)
1) Detects outside temperature
Pressure sensor
High pressure
sensor
(Connector CN501: Red)
1) Detects high pressure and controls compressor capacity
2) Detects high pressure in cooling operation, and controls the fan in low ambient cooling operation
3) Detects subcool in indoor unit in heating operation
Low pressure
sensor
(Connector CN500: White)
1) Detects low pressure in cooling operation, and controls compressor capacity
2) Detects low pressure in heating operation, and controls the super heat
SV4
SV5
SV2
(Hot gas bypass) (Connector CN311 : White)
1) Low pressure release function
2) High pressure release function
3) Gas balance function during stop time
4) Hot gas bypass into accumulator
(Connector CN314 : White)
1) Preventive function for highpressure rising in heating operation
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A10-1510.indb 29
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2016/04/08 17:20:30
2016/04/08 17:20:30
