Toshiba MCY-MHP0305HT-C Service Manual page 23

Explanation of functional parts
Functional part na m e
(Hot gas bypass) (Connector CN311 : White)
1) Low pressure release function
SV2
2) High pressure release function
3) Gas balance function during stop time
4) Hot gas bypass into accumulator
Solenoid valve
(Start compensation valve of compressor)
(Connector CN312: Red)
SV4 1) For gas balance start
2) High pressure release function
3) Low pressure release function
(Connector CN317: Blue)
4-way valve 1) Cooling / heating exchange
2) Reverse defrost
(Connector CN300: White)
Pulse motor 1) Super heat control function in heating operation
PMV
valve 2) Liquid line shut-down function while follower unit stops
3) Under cool adjustment function in cooling operation
(Connector CN502: White)
TD 1) Protection of compressor discharge temp.
2) Used for discharge temperature release
(Connector CN505: White)
TS
1) Controls PMV super heat in heating operation
(Connector CN520: Green)
Temp. sensor
TE 1) Controls defrost in heating operation
2) Controls outdoor fan in heating operation
(Connector CN523: White)
TL
1) Detects under cool in cooling operation
(Connector CN507: Yellow)
TO
1) Detects outside temperature
(Connector CN501: Red)
High pressure 1) Detects high pressure and controls compressor capacity
sensor 2) Detects high pressure in cooling operation, and controls the fan in low ambient cooling operation
3) Detects under cool in indoor unit in heating operation
Pressure sensor
(Connector CN500: White)
Low pressure
1) Detects low pressure in cooling operation, and controls compressor capacity
sensor
2) Detects low pressure in heating operation, and controls the super heat
F u n t c o i n l a o u l t n i e
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