7
DANGER
Turn off
breaker.
Electric shock
hazard
Prohibition
Stay on
protection
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 (*1) or qualified service person (*1) 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 (
∗
1) is allowed to do this kind of work.
WARNING
Check earth
wires.
Prohibition of
modification.
Use specified
parts.
Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main
unit, otherwise an electric shock is caused when a leak occurs.If the earth wire is not correctly connected,
contact an electric engineer for rework.
After completing the repair or relocation work, check that the ground wires are connected properly.
Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for telephone wires.
Do not modify the products. Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.
When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the
specifications given in the Service Manual (or use the parts contained on the parts list in the Service Manual).
Use of any parts which do not satisfy the required specifications may give rise to electric shocks, smoking
and/or a fire.
