Fujitsu Waterstage WS G140DC6 Series - Service Parts Information 2: Inverter Compressor

Split system (Single phase and 3-phase type)
Maintenance Document 1544-1 37
2.4.2 Service parts information 2 : Inverter compressor
Check point 1 : Check connection
Check terminal connection of compressor
(Loose or incorrect wiring)
Only for 3-phase type :
Check connection of inverter PCB
(Loose or incorrect wiring)
Check point 2 : check winding resistance
Check winding resistance on each terminal
If the resistance value is 0Ω or infinite, replace compressor.
Check point 3 : replace Main PCB
If check point 1 and 2 do not improve the symptom, replace Main PCB.
(RED)
(BLACK)
(WHITE)
BLACK
WHITE
Compressor
Resistance value :
- 0.24 Ω (at 20°C) for single phase type
- 0.79 Ω (at 20°C) for 3-phase type
Main PCB