Hitachi RAC-25FX8, Руководство по обслуживанию

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– 18 –
– 20 –
Heating Capability •
This room air conditioner utiliz
es
a heat pump system that absorbs
e
xter
ior
heat and br
ings
it into a room to be heated.
As the ambient
temper
ature
gets lo
w
e
r,
heating capability will also lo
w
e
r.
In such a
situation, the P
A
M
and in
ve
rter
w
o
rk
to increase compressor r
pm
to k
eep
the unitís
heating capability from decreasing.
If the unitís
heating
perf
or
mance
is still unsatisf
actor
y,
other heating appliances should be
used to augment this unitís perf
or
mance
.
•
The air conditioner is designed to heat an entire room so that it ma
y tak
e some time bef
ore y
ou f
eel w
a
rm
. Timer
Cooling and Dehumidifying Capabilities •
If the heat present in a room e
xceeds
the unitís
cooling capacity (f
or
e
xample
,
if there are man
y
people in the room
or other heating appliances are used), the preset room temper
ature ma
y not be reached.
INFORMATION
CAP
ABILITIES
CA
UTION
Do not use a sto
ve
or an
y other high-
temper
ature de
vices
in pro
ximity to the
indoor unit.
•
When f
an speed, room temper
ature are set with the remote controller bef
ore star
ting man
ual oper
ation and
the b
uttons
are released, the indication of settings will go of
f in 10 seconds and only the oper
ation
mode will
be displa
y
ed.
•
Pressing the
b
utton while the unit is in oper
ation will let the protectiv
e circuit w
o
rk
so that the unit will
not oper
ate f
or appro
ximately 3 min
utes
.
• •
If y
ou
feel
cold wind dur
ing
w
a
rm
ing
oper
ation
with t
h
e
(HI) f
an
speed or w
ant
to mak
e
the unit oper
ation
quieter after the room is heated, use of
(A
UT
O) setting is recommended.
•
W
ith the
(SILENT) setting, the unití
s cooling capability will lo
w
er slightly
.
V
ARIOUS FUNCTIONS
•
When the timer has been prog
ra
mmed,
the unit will not oper
ate
e
v
en
if the set time is reached unless the unit
receiv
es a
signal
from
the
remote
controller
.
that timer prog
ra
mming
is complete (beep) and the
TIMER lamp of the indoor unit lights
.
•
If the
(SLEEP) b
utton is pressed while the ON/OFF timer is prog
ra
mmed, the sleep timer tak
es pr
ior
ity
.
•
Dur
ing
sleep timer oper
ation,
the f
an
speed sets to
(SILENT)
regardless of the preset speed.
The remote
controller displa
y
indication will remain unchanged e
v
en with the
(SILENT) setting.
TIMER PR
OGRAMMING/SLEEP
TIMER OPERA
TION
PR
OHIBITION
operation is recommended for effective preheating ahead of the desired time. During heating operation, the indoor unit’
s color indicator lamp may flash with no air emitted for a while.
– 21 –
ENGLISH
REGULAR INSPECTION
PLEASE CHECK
THE FOLLOWING POINTS EVER
Y
EITHER HALF
YEARL
Y
OR
YEARL
Y
. CONT
ACT
YOUR
SALES
AGENT
SHOULD
YOU NEED
ANY
HELP
.
1 2
Check to see if the unit’
s earth line has been connected
correctly
.
If the earth line is disconnected or faulty
, unit failure or electric
shock hazard may result.
Check to see if the mounting frame has rusted excessively or if the outdoor unit has tilted or become unstable.
It could collapse or fall, causing injury
.
WHEN
ASKING FOR SER
VICE, CHECK THE FOLLOWING
CONDITION
CHECK THE FOLLOWING POINTS
•
Do the batteries need replacement?
•I
s the polarity of the inserted batteries correct?
•I
s the air filter blocked with dust?
•I
s the set temperature suitable?
•
Have the top and bottom air deflectors been adjusted to their correct positions according to the operation mode selected?
•A
re the air inlets or air outlets of indoor and outdoor units blocked?
•I
s the fan speed “LOW” or “SILENT”?
WARNING
W
ARNING
AFTER SALES SERVICE AND WARRANTY
•I
s the fuse all right?
•I
s the voltage extremely high or low?
•I
s the circuit breaker “ON”?
•I
s the setting of operation mode different from other indoor units?
When it does not operate. When it does not cool well. When it does not heat well.
<Operation start> The unit is preparing to blow warm air. Please wait. <In operation> The outdoor unit is defrosting. Please wait.
Hissing or fizzy sounds
Refrigerant flow noise in the pipe or valve sound generated when flow rate is adjusted.
Squeaking noise
Noise generated when the unit expands or contracts due to temperature changes.
Rustling noise
Noise generated with the indoor unit fan’s rpm changing such as operation start times.
Clicking
noise
Noise of the motorized valve when the unit is switched on.
Perking noise
Noise of the ventilation fan sucking in air present in the drain hose and blowing out dehumidifying water that had accumulated in the condensed water collector. For details, consult your sales agent.
Changing operation noise
Operation noise changes due to power variations according to room temperature changes.
Mist
emission
Mist is generated as the air within the room is suddenly cooled by conditioned air.
During heating, the operation indicator blinks and air blow stops
If the remote controller is not transmitting a signal.
(Remote controller display is dim or blank.)
The f
o
llo
wing phenomena do not indicate unit f
a
ilure
.