Refrigerant Flow (Single Defrost) - Toshiba MMY-MUP0801HT8P-TR Service Manual

4-2. Refrigerant Flow (Single Defrost)

Outdoor Unit (MMY-MUP2401*)
Fan
M
Fan motor
PMV1
Left side Left side Left side
TL1
Main heat exchanger Main heat exchanger Main heat exchanger
TE1
Left side Left side Left side
Sub heat exchanger
Sub heat exchanger Sub heat exchanger
PMV2
TE2
PMV3
TL2
TS3
High-pressure
sensor
SV3D
SV
SV
SV41
TD1
Subcool
Heat Exchanger
PMV4
TL3
Liquid side Gas side
Service valve Service valve
TC2 TCJ TC1
Cooling
Outdoor Unit
4-way valve OFF SV3D
PMV1 Control SV3F
PMV2 Control SV4(n)
PMV3 Control Outdoor fan
PMV4 Control
Fan
M
Fan motor
TO
Right side Right side Right side
Main heat exchanger Main heat exchanger Main heat exchanger
TG1
TG2
TG3
Right side Right side Right side
Sub heat exchanger Sub heat exchanger Sub heat exchanger
TE3
4-way valve
TS1
Low-pressure
sensor
Accumulator
SV3F
High- High-
SV
pressure pressure
switch switch
SV42
TD2
TK1 TK2
TC2 TCJ TC1
Cooling
Control
Control
Control
Control
The outdoor unit which communication line between indoor and outdoor is connected is the "Header unit".
Other outdoor units are called "Follower units".
High-pressure gas refrigerant
Condensate liquid refrigerant
- 45 -
Evaporative gas refrigerant (Low pressure)
Low-pressure circuit (Refrigerant recover line)