Daikin VRVII Manual page 20

Symptom-based Troubleshooting
Symptom
10 A white mist
comes out
from the
system.
<Indoor unit>
In cooling
operation, the
ambient humidity
is high.
(This indoor unit
is installed in a
place with much
oil or dust.)
<Indoor unit>
Immediately after
cooling operation
stopping, the
ambient
temperature and
humidity are low.
<Indoor and
outdoor units>
After the
completion of
defrosting
operation, the
system is
switched to
heating
operation.
Supposed Cause Countermeasure
Uneven
temperature
distribution due to
heavy stain of the
inside of the
indoor unit
Hot gas
(refrigerant) flown
in the indoor unit
results to be
vapor from the
unit.
Defrosted
moisture turns to
be vapor and
comes out from
the units.
Clean the inside
of the indoor unit.
Normal operation.
Normal operation.
15