Toshiba R410A Service Manual page 58

5-5. Mainly Heating, Partly Cooling Operation
(Cooling/heating simultaneous operation with subjective heating operation)
TE1
SV12
PMV1 PMV2
PMV3
SV11
SV5
SV6
TL
Liquid
tank
SVD
FS unit
SVDD SVSS
ST
Indoor unit
PMV
TC2
TCJ
High pressure gas or condensed liquid refrigerant
Low pressure gas refrigerant
Outdoor unit
4-way valve ON
SV4 (n) (Note 1)
SV5 OFF
SV6 Control
SV11 ON
SV12 Close (Note 2)
Outdoor fan Control
(Note 1) SV4 on the stopped compressor is ON.
Header unit
FM
*
Sensor
Main heat exchanger
TO
*
Main heat exchanger
4-Way valve
ON
Pd sensor
SV2
OS
SV3D
SV41 SV42
HP HP
SV3C
TD1
TD2
TK3
TK1 TK2
Oil tank
TK4
SV3E
SV3A
SV3B
SVS
SVD
ST ST
PMV
TC1
TC2
TCJ
Heating
SV3A OFF
SV3B OFF
SV3C OFF
SV3D Control
SV3E ON
PMV1, 2 Control
PMV3 Close (Note 2)
PMV1 PMV2
PMV3
TS1
Pd
sensor
TS2
TL
Liquid
tank
Accumulator
Discharge gas pipe
Liquid pipe
SVS
SVD
SVDD SVSS
ST ST
PMV
TC1
TC2
TCJ
Heating
Low pressure gas refrigerant (Refrigerant recovery line)
High pressure refrigerant (Push-in circuit)
Flow selector/Indoor unit
Cooling thermo.-ON
SVD OFF
SVS ON
SVDD OFF
SVSS ON
PMV Control
(Note 2) May be controlled.
58
Follower unit
FM
TE1
*
Main heat exchanger
*
Main heat exchanger
SV12
SV11
SV5
Pd sensor
SV6
SV2
OS
SV3D
SV41
HP
SV3C
TD1
TK3
TK1 TK2
Oil tank
TK4
SV3E
SV3A
Suction gas pipe
SVS
SVD
SVDD SVSS
ST ST
PMV
TC1
TC2
TCJ
Stop
Heating thermo.-ON
SVD ON SVD
SVS OFF
SVDD OFF SVDD
SVSS OFF SVSS
PMV Control PMV
Sensor
TO
4-Way valve
ON
TS1
Pd
sensor
TS2
SV42
HP
Accumulator
TD2
SV3B
SVS
SVDD SVSS
ST
TC1
Cooling
Stop
OFF
SVS OFF
OFF
ON
Close