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Stay on
protection
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.
Check earth
wires.
Use
specified
parts.
Do not bring
a child close
to the
equipment.
Insulating
measures
No fire
Prohibition of
modification.
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.
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 that do not satisfy the required specifications may give rise to electric
shocks, smoking and/or a fire.
Do not modify the products. Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.
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, place "Keep out" signs around the work site
before proceeding. Third-party individuals may enter the work site and receive electric shocks if this warning
is not heeded.
Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then apply a
water-cut method, otherwise a leak or production of fire is caused at the users' side.
When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that
coats the pipes may otherwise burn.
When repairing the refrigerating cycle, take the following measures.
1) Be attentive to fire around the cycle.
When using a gas stove, etc., is sure to put out fire before work; otherwise the oil mixed with refrigerant
gas may catch fire.
2) Do not use a brazing in the closed room.
When using it without ventilation, carbon monoxide poisoning may be caused.
3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the brazing may catch the
inflammables.
After completing the repair or relocation work, check that the earth wires are connected properly.
Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of
refrigerant in the atmosphere due to the refrigerant leak.
Under no circumstances, the power supply wire or the indoor and outdoor connecting wire must not be
connected in the middle (Connection using a solder less terminal etc.)
Connection trouble in the places where the wire is connected in the middle may give rise to smoking and/or
a fire.
Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock.
Do not connect earth wires to gas pipes, water pipes, and lightning rods or earth wires for telephone wires.
(
∗
1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”