Hitachi airHome 500 RAK-GH18PCASV Operation Manual page 12

If the unit still fails to operate normally after performing the
above inspections, turn the circuit breaker off and contact
your sales agent immediately.
Contact your sales agent immediately
if the following phenomena should
occur
The circuit breaker switches off or
●
the fuse blows frequently.
The switch operation is not
●
stable.
Foreign matter or water accidentally enters the
●
unit interior.
The power cord gets excessively hot or its
●
insulation is torn or stripped.
TIMER lamp on the indoor unit display blinks.
●
(As the nature of the failure can be identifi ed
by the blinking cycle, check the blinking cycle
before turning off the circuit breaker.)
AFTER SALE SERVICE AND
WARRANTY
WHEN ASKING FOR SERVICE, CHECK
THE FOLLOWING POINTS
CONDITION
If the remote controller
is not transmitting a
signal.
(Remote controller
display is dim or
blank.)
When it does not
cool well
CHECK THE
FOLLOWING POINTS
Do the batteries need
●
replacement?
Is the polarity of the
●
inserted batteries correct?
Is the fuse all right?
●
Is the voltage extremely
●
high or low?
Is the circuit breaker "ON"?
●
Is the setting of operation
●
mode different from other
indoor units?
Is the pre-fi lter blocked
●
with dust?
Does sunlight fall directly
●
on the outdoor unit?
Is the air fl ow of the
●
outdoor unit obstructed?
Are the doors or windows
●
opened, or is there any
source of heat in the
room?
Is the set temperature
●
suitable?
Are the air inlets or air
●
outlets of indoor and
outdoor units blocked?
Is the fan speed "LOW" or
●
"SILENT"?
Please contact your sales agent immediately if the air
conditioner still fails to operate normally after the above
inspections. Inform your agent for the model of your unit,
serial 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 fl uctuation
may occur. This is of no consequence.
The conditions of the local Power Supply Companies
are to be observed.
Note
Avoid to use the room air conditioner for cooling
●
operation when the outside temperature is below
21°C (70°F).
The recommended maximum and minimum operating
temperatures of the hot and cold sides should be as
below:
Indoor Dry bulb °C
Wet bulb °C
Outdoor Dry bulb °C
Wet bulb °C
– 12 –
Minimum Maximum
21 32
15 23
21 46
15 26