Fujitsu ASU9RL - Error Detection; Serial Communication Errors; Thermistor Malfunctions; Control System and Motor Faults

REFRIGERANT SYSTEM DIAGRAM
Models : ASU9RL / AOU9RL
ASU12RL / AOU12RL
03-01
2-Way valve
Strainer
Strainer
3-Way valve
Muffler
4-Way valve
Expansion valve
Refrigerant direction
Heat exchanger
(indoor unit)
Heat exchanger
(outdoor unit)
Compressor
Cooling
Heating
Refrigerant pipe diameter
Liquid : 1/4" (6.35 mm)
Gas : 3/8" (9.52 mm)