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Sensor
(TC2)
M
Fan
Fan motor
Sensor
(TCJ)
Sensor
(TC1)
Strainer
Liquid
side
Gas side
Capillary tube
Sensor
(TA)
Pulse Motor
Valve
(PMV)
Heat exchanger
at indoor side
Functional part name Functional outline
Pulse Motor Valve
1. Single cooling
(Connector CN082 (6P): Blue)
1) Controls super heat in cooling operation
2) Controls under cool in heating operation
3) Recovers refrigerant oil in cooling operation
4) Recovers refrigerant oil in heating operation
PMV
Temp. Sensor (Connector CN104 (2P): Yellow)
1) Detects indoor suction temperature
1.TA
(Connector CN100 (3P): Brown)
1) Controls PMV super heat in cooling operation
2.TC1
(Connector CN101 (2P): Black)
1) Controls PMV under cool in heating operation
3.TC2
OutlineOperation mode
(Connector CN102 (2P): Red)
1) Controls PMV super heat in cooling operation
2) [MMU-AP007YH to AP012YH only] Controls PMV under cool in heating operation
4.TCJ
Cooling operation only without heating operation
The outdoor heat exchanger (Main heat exchanger) is used as condenser.
2. Single heating
Heating operation only without cooling operation
The outdoor heat exchanger (Main heat exchanger) is used as evaporator.
4. Collective heating
Operating heating function mainly, collective operation of cooling and heating operation
The outdoor heat exchanger (Main heat exchanger) is used as evaporator.
Reversing 4-way valve, defrost the outdoor heat exchanger with single cooling cycle.5. Defrost
3. Collective cooling
Operating cooling function mainly, collective operation of cooling and heating operation or single
cooling operation under outdoor temperature 10˚C or below
The outdoor heat exchanger (Auxiliary heat exchanger) is used as condenser.
Indoor Unit
CAUTION
MMU-AP007YH, AP012YH type air conditioners have no TC2 sensor.
Explanation of functional parts in indoor unit
As shown in the following table, the operation modes are provided for this model.
<Operation mode>
For the refrigerating cycle flow of each operation mode, refer to “4. System refrigerant piping schematic
diagrams” and after.
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