Gree GWH30LB-D3DNA3E - Troubleshooting; System Start-up and Odor Issues; Normal Operating Sounds; Unit Not Running or Inefficient

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2-Way
valve
Strainer
Strainer
Strainer
3-Way
valve
Muffler
4-Way valve
H
eat exc
h
anger
( INDOOR )
Heat exchanger
( OUTDOOR )
r o t a l u m u c c a - b u S
r o s s e r p m o C
Cooling
Heatin
g
Electron expansion valve