Daikin VRV Service Manual

Si30-408 Method of Troubleshooting
Troubleshooting 87
3.5 Structure and Operation of Solenoid Valve
Liquid Injection In order to prevent overheating operation of compressor, refrigerant is injected to compressor
suction port from liquid line reducing pressure through capillary tube.
The operation is as follows;
Plunger which is a slide part inside valve body lifts to make a flow of refrigerant when the coil is
energized, while when not energized, the plunger lowers to contact with valve seat due to spring
force, and shuts the flow of refrigerant.
Guide tube
Spring
Refrigerant pipe
Valve seat
Plunger
Solenoid valve coil

Daikin VRV Specifications

General

Brand	Daikin
Energy Efficiency	High
Control	Centralized and individual zone control
Inverter Technology	Yes
Type	Variable Refrigerant Volume (VRV)
Cooling Capacity	Varies by model
Heating Capacity	Varies by model
Refrigerant	R-32 or R-410A
Application	Commercial buildings, large residential spaces
SEER	Varies by model
HSPF	Varies by model
EER	Varies by model
COP	Varies by model
Sound Level	Varies by model
Indoor Unit Options	wall-mounted, ducted