Toshiba MMY-MAP0806HT7(J)P, Service Manual

Page: 60 / 350

Explanation of Functional Parts
e n i l t u o l a n o i t c n u F e m a n t r a p l a n o i t c n u F
Solenoid valve
SV3A
(Connector CN321: White)
1) Supplies oil reserved in the oil header during ON time.
SV3B
(Connector CN321: White)
1) Returns oil supplied in the balance pipe to the compressor.
SV3C
(Connector CN321: White)
1) Pressurizes oil reserved in the oil header during ON time.
SV3D
(Connector CN322: White)
1) Reserves oil in the oil separator during OFF time.
2) Returns oil reserved in the oil separator to the compressor during ON time.
SV2
(Hot gas bypass) (Connector CN311: White)
1) Low pressure release function
2) High pressure release function
3) Gas balance function during stop time
SV41
SV42
(
Start assure valve
of compressor)
(SV41 Connector CN312: Blue, SV42 Connector CN312: Blue
.
1) For gas balance start
2) High pressure release function
3) Low pressure release function
SV
52
(Connector CN314: White)
1)
Gas injection function during hot gas defrost in heating operation
4-way valve
(Connector CN317:Blue)
1) Cooling/heating exchange
2) Reverse defrost
Oil separator
1) Prevention for rapid decreasing of oil (Decreases oil flowing to the cycle)
2) Reserve function of surplus oil
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
Heater
Compressor
case heater (Compressor 1 Connector CN331: White, Compressor 2 Connector CN332: Blue
.
1) Prevents liquid accumulation to compressor
Accumulator
case heater (Connector CN334: Red)
1) Prevents liquid accumulation to accumulator
t i n u r o o d t u o h c a e n i g n i c n a l a b li O ) 1 e p i p e c n a l a B
(PMV1 Connector CN300: White, PMV3 Connector CN302: Blue)
1)
Super heat control function in heating operation
PMV1, 3
2)
Liquid line shut-down function while follower unit stops
Pulese motor
3)
Subcool adjustment function in cooling operation
valve
4)
Exchange function between main and sub exchangers in cooling operation
(Connector CN303: Red)
PMV4
1) Subcool adjustment function in cooling operation
2)
Liquid bypass function for discharge temperature release (cooling bypass function)
TD1
(TD1 Connector CN502: White, TD2 Connector CN503: Pink )
TD2
1)
Protection of compressor discharge temp.
2)
Used for dischage temperature release
TS1
(Connector CN505: White)
1)
Controls PMV1 super heat in heating operation
2)
Protection of compressor
TS3
(Connector CN90 3 : Purple)
1)
Controls PMV4 super heat in heating operation
TG1
TG2 (TG1 Connector CN52 5 : Blue, TG2 Connector CN526: White )
1)
Controls PMV1 super heat in heating operation
Temp. Sensor
TE1
(TE1 Connector CN520: Green, TE2 Connector CN521: Red )
TE2
1)
Controls defrost in heating operation
2)
Controls outdoor fan in heating operation
TK1,TK2
(TK1 Connector CN531: Black, TK2 Connector CN532: Green, TK4 Connector CN534: Yellow,
TK4,TK5
TK5 Connector CN535: Red)
1)
Judges oil level of the compressor
TL1,TL2
TL3
(TL1 Connector CN523: White, TL2 Connector CN52 4 : Gray, TL3 Connector CN90 2 :
Pink)
1)
Detects subcool in cooling operation
TO
(Connector CN507: Yellow)
1)
Detects outside temperature
(Connector CN31
4
:
White
)
1)
Preventive function for high-pressure rising in heating operation
2)
Gas injection function during hot fas defrost in heating operation
SV
51
− 5 9 −
(High pressure SW 1,2 Connector CN251: BLK )
1) Piping resisting pressure protection
High pressure switch
(4.15MPa)
High pressure SW 1
High pressure SW 2