5
2. Precautions for Safety
The manufacturer shall not assume any liability for the damage caused by not observing the
description of this manual.
DANGER
Before carrying out the installation, maintenance, repair or removal work, be sure to set the
circuit breaker for both the indoor and outdoor units to the OFF position. Otherwise, electric
shocks may result.
Before opening the intake grille of the indoor unit or service panel of the outdoor unit, set
the circuit breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through
contact with the interior parts.
Only a qualified installer or qualified service person is allowed to remove the intake grille
of the indoor unit or service panel of the outdoor unit and do the work required.
Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the
circuit breaker to the OFF position and place a "Work in progress" sign on the circuit
breaker.
When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF
without fail, and place a "Work in progress" sign near the circuit breaker before proceeding
with the work.
When you have noticed that some kind of trouble (such as when an error display has
appeared, there is a smell of burning, abnormal sounds are heard, the air conditioner fails
to cool or heat or water is leaking) has occurred in the air conditioner, do not touch the air
conditioner yourself but set the circuit breaker to the OFF position, and contact a qualified
service person. Take steps to ensure that the power will not be turned on (by marking
"out of service" near the circuit breaker, for instance) until qualified service person
arrives. Continuing to use the air conditioner in the trouble status may cause mechanical
problems to escalate or result in electric shocks or other failure.
When you access inside of the service panel to repair electric parts, wait for about five
minutes after turning off the breaker. Do not start repairing immediately. Otherwise you may
get electric shock by touching terminals of high-voltage capacitors. Natural discharge of the
capacitor takes about five minutes.
Place a "Work in progress" sign near the circuit breaker while the installation, maintenance,
repair or removal work is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
Before operating the air conditioner after having completed the work, check that the
electrical parts box cover of the indoor unit and service panel of the outdoor unit are
closed and set the circuit breaker to the ON position. You may receive an electric shock if
the power is turned on without first conducting these checks.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the
electrical parts with the electrical parts box cover of one or more of the indoor units and the
service panel of the outdoor unit removed in order to find out exactly where the trouble lies,
wear insulated heat-resistant gloves, insulated boots and insulated work overalls, and take
care to avoid touching any live parts. You may receive an electric shock if you fail to heed
this warning. Only qualified service person is allowed to do this kind of work.
Before starting to repair the air conditioner, read carefully through the Service Manual, and
repair the air conditioner by following its instructions.
Only qualified service person is allowed to repair the air conditioner. Repair of the air
conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks
and / or other problems.
Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which
may result in a failure or explosion of the product or an injury to your body.
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