10
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
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 earth wires are connected properly.
Be sure to connect earth wire. (Grounding work) Incomplete earthing causes an electric shock.
Do not connect earth wires to gas pipes, water pipes, and lightning rods or earth wires for telephone wires.
Prohibition of
modification
Do not modify the products. Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.
Use specified
parts
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.
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.
Do not bring a
child close to the
equipment
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.
Insulating
measures
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 user's side.
No fire
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, be 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.
(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person”.
WARNING