Daikin VRV Service Manual

Si30-408 Malfunction Tree Analysis (FTA)
Troubleshooting 99
4.3 Abnormal Discharge Pipe Temperature in Cooling
Operation
Faulty design
Clogged path
Faulty coil
Faulty control PC board
Faulty compressor
Faulty four way valve
Warp · Collapse
Faulty sensor
Faulty hot gas bypass valve operation
Run out of gas
Abnormal
discharge pipe
temperature
Discharge
temperature
rises
False detection
of discharge
pipe temperature
Faulty discharge
pipe control
Faulty
compressor
Refrigerant
circulation
volume shortage
Faulty discharge
pipe thermistor
Faulty control
PC board
Faulty liquid injection circuit
operation
Faulty expansion
valve operation
Piping resistance
high
Faulty solenoid valve
Faulty
expansion
valve
Faulty
control
Abnormal piping
length
Closed stop
valve
Foreign matter clog
(Including moisture chalk)
Faulty driving
part
Faulty control
PC board
Faulty valve
body

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