Mitsubishi Electric CITY MULTI PUHY-P108 Service Handbook page 79

[ III Outdoor Unit / BC Controller Components ]
(2) Front view of a refrigerant circuit
High-pressure check joint *1
Pressure switch
High-pressure
sensor
4-way valve
(21S4a)
2-way valve
(SV5b)
Gas-side
ball valve *1
Liquid-side ball valve *1
*1 The diameter of this charge plug is 5/16".
Use the adapter that is supplied with the product if using tools designed primarily for use with 1/4"-diameter materials.
(3) Rear view of a refrigerant circuit
Accumulator
Subcool coil
Fusible plug
4-way valve
(21S4b)
Low-pressure
check joint *1
Oil separator
- 70 -
Inverter compressor
Fusible plug
Low-pressure sensor
Oil separator
Accumulator
Discharge muffler
Linear expansion valve
(LEV1)