Daikin VRV Service Manual

Points of Analysis Si30-408
180 Service Checker Type3 Application Edition
5.3 Effective Use of Checker
Probe causes of wet operation using the Checker in combination with sensor kits.
Most of current malfunctions on compressors result from seizing of or damage to the
compressors due to the dilution of lubricant (refrigerant oil) caused while the compressors are in
wet operation.
In order to verify the wet operation using the Checker Type3, using DIII-NET and sensor input in
combination enables the collection of effective data.
(If the Checker is connected to PC board, no sensor kits can be used in combination.)
(Example of connection) For RSXYP16KJY1 (Information on slave units is omitted.)
 Through the ON/OFF operation of Injection solenoid valve and the temperature of outlet
pipe, determine whether or not oil leaks inside the solenoid valve.
 Measure the melting refrigerant into oil according to the temperature at the bottom of
compressor and also wet operation according to compressor operating temperature.
 Since the position of the suction pipe Th varies with models, mount the sensor kit Th in a
place where the suction pipe is connected at all times.

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