Daikin VRV Service Manual

Malfunction Tree Analysis (FTA) Si30-408
100 Troubleshooting
4.4 Water Leakage from Indoor Unit
Air flow shortage
Faulty fan motor
Refrigerant deflection
Hole opened drain pan
Drain pump failure
Clogged drain pipe
Float SW failure
Splashes from fin
An actual example;
Sealing materials inserted in tube sheet of
cassette or double flow cassette, or between
partition plates of heat exchanger come out
from contacting part with tube sheet and come
into contact with heat exchanger resulting water
leakage.
Water leakage
Waterdrop fall down
from fin
Foreign matter adhesion /
Structural deformation
Water leakage from drain
pan
Adhesion of waterdrop caused by heat exchange
water repellent (misting)
Heat exchanger
water repellent
Contact drain pan
with heat exchanger
Generation of waterdrop
by fin breakage
Dirty air filter, heat
exchanger
Malfunction of
refrigerant system
Refrigerant
shortage

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