Refrigerant Cycle Diagram - Toshiba MMW-AP0481CHQ-E Service Manual

5. REFRIGERANT CYCLE DIAGRAM

Model: MMW-AP0481CHQ-E (TR)
Gas side
R410A
Liquid side
PMV1
R410A
Functional part name
Pulse Motor Valve
Temperature
sensor
High-pressure
sensor
Low-pressure
sensor
High-pressure switch
Flow switch
Low-pressure
sensor (PS)
TC1
PLATE TYPE
HEAT EXCHANGER
R410A and R134a
TCJ
PMV1 (Connector CN82 (6P) Blue on Control P.C.Board)
(R410A side) 1) Controls sub cool in heating operation
2) Recovers refrigerant oil in cooling operation
3) Recovers refrigerant oil in heating operation
PMV2 (Connector CN711 (6P) Blue on I/F P.C.Board)
(R134a side) 1) Controls super heat in operation
TD (Connector CN611 (3P) White on l/F P.C.Board)
1) Detects discharge gas temperature (R134a side)
TS (Connector CN602 (2P) White on I/F P.C.Board)
1) Detects suction gas temperature (R134a side)
TE (Connector CN603 (2P) Black on I/F P.C.Board)
1) Detects refrigerant gas temperature (R134a side)
TC1 (Connector CN100 (3P) Brown on Control P.C.Board)
1) Detects refrigerant gas temperature (R410A side)
TCJ (Connector CN102 (2P) White on Control P.C.Board)
1) Detects refrigerant liquid temperature (R410A side)
TA (TWI) (Connector CN104 (2P) Yellow on Control P.C.Board)
1) Detects water inlet temperature
TC2 (TWO) (Connector CN101 (2P) Red on Control P.C.Board)
1) Detects water outlet temperature
PD (Connector CN606 (3P) Black on I/F P.C.Board)
1) Detects discharge refrigerant gas pressure
PS (Connector CN605 (3P) Yellow on I/F P.C.Board)
1) Detects suction refrigerant gas pressure
63H (Connector CN690 (3P) Green on IPDU P.C.Board)
1) Protects high pressure rise
FS (Connector CN34 (3P) Red on Control P.C.Board)
1) Detects water flow
High-pressure
sensor (PD)
High-pressure
switch (63H)
TS TD
Accumulator
Compressor
(Inverter)
PMV2
TE
Functional outline
– 17 –
TC2
(TWO)
PLATE TYPE
HEAT EXCHANGER
Water and R134a
Flow SW
FS
TA
(TWI)
Symbol
Check
Temperature
Strainer
sensor
joint
Water
Outlet
Water
Inlet