Hitachi RAC-50FPA, Service Manual

Page: 26 / 101

–37 –
Steam emitted from the outdoor unit
Water generated duri
ng defrosting operat
ion evaporates and steam is emitted.
Odors
Caused as the smells and particles of smoke, food, cosmetics, etc. pr
esent in room
air become att
a
ched the unit and blown off in
to the room ag
ain.
Defrosting is underway (as the heati
n
g
operation is
stopped, the microcompu
ter
checks frost accumulated in the i
n
door unit and instructs t
h
e unit to perform
automatic defr
osting if necessary).
Shows preheating or def
rosting operati
o
n is under
w
ay.
As the protective circuit or preheat sensor
operates when unit operation is stopped
during preheati
ng and then re
started, or when operation mode is switched
from
cooling to heating, the
lamp continues to b
link.
Actual room temperature
may deviate sl
ightly from the remote controller’s
temperature setting depending on the number of pe
ople in the room, indoor or
outdoor conditions when the air conditioner
is used for more than one room at the
same time.
s
If the unit still fails to operate normally after performing the above inspections, turn the circuit
break
e
r off and contact
your sales
agent immediatel
y.
Contact your sales agent immediately if the following phenomena should occur: s
The circuit brea
ker switches off or the fuse blows
frequently.
s
The switch operation is not stable.
s
Foreign matter or water accidenta
lly enters the unit interior.
s
The power cord gets
excessi
v
ely hot or its insul
ation is torn or
stripped.
s
TIMER lamp on the indoor unit display b
links.
As the nature of the failure can be identified by
the blinking cycle,
check the b
linking cycle before turning off
the circuit br
eaker.
s
Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above inspections. Inform your agent of the model of your unit, production number, date of installation.
Please also
inform him regarding the fault.
Please note: On switching on the equipment, particularly when the room light is dimmed, a slight brightness fluctuation may occur. This is of no consequence. The conditions of the local Power Supply Companies are to be observed.
Notes
s
In quiet operation or stopping the running, the following phenomena may occasionally occur, but they are not abnormal for the operation. (1)
Slight flowing noise of refrigerant in the refrigerating cycle.
(2)
Slight rubbing noise from the fan casing which is cooled and then gradually warmed as operation stops.
s
The odor will possibly be emitted from the room air conditioner because the various odor, emitted by smoke, foodstuffs, cosmetics and so on, sticks to it. So please clean the air filter and the evaporator regularly to reduce the odor.
The outdoor unit continues to
operate
even if operation is stopped Does not reach the temperatur
e
setting The OPERATION lamp is blinking
( )
26