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Mitsubishi Electric PUHY-HP200YNW-A Service Handbook page 3

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Always replace a fuse with one with the cor-

rect current rating. The use of improperly

rated fuses or a substitution of fuses with

steel or copper wire may result in bursting,

fire or explosion.

To reduce the risk of electric shock, smoke,

and fire due to infiltration of dust and water,

properly install all required covers and pan-

els on the terminal box and control box.

To reduce the risk of being caught in rotat-

ing parts, electric shock, and burns, do not

operate the unit without all required panels

and guards being installed.

To reduce the risk of injury, do not sit,

stand, or place objects on the unit.

To reduce the risk of water leakage and mal-

functions, do not turn off the power immedi-

ately after stopping operation. Leave the

unit turned on for at least 5 minutes before

turning off the power.

Do not install the unit over things that are

vulnerable to water damage from condensa-

tion dripping.

To reduce the risk of injury, electric shock,

and malfunctions, do not touch or allow ca-

bles to come in contact with the edges of

components.

To reduce the risk of injury, do not touch the

heat exchanger fins or sharp edges of com-

ponents with bare hands.

[2] Transportation and Installation

Transportation and Installation

Lift the unit by placing the slings at desig-

nated locations. Support the outdoor unit

securely at four points to keep it from slip-

ping and sliding. If the unit is not properly

supported, it may fall and cause personal

injury.

To reduce the risk of injury, do not carry the

product by the PP bands that are used on

some packages.

To reduce the risk of injury, products weigh-

ing 20 kg or more should be carried by two

or more people.

To reduce the risk of injury from units falling

or falling over, periodically check the instal-

lation base for damage.

Consult an authorized agency for the proper

disposal of the unit. Refrigerant oil and re-

frigerant that may be left in the unit pose a

risk of fire, explosion, or environmental pol-

lution.

Always wear protective gears when touch-

ing electrical components on the unit. Sev-

eral minutes after the power is switched off,

residual voltage may still cause electric

shock.

To reduce the risk of electric shock and

burns, always wear protective gear when

working on units.

To reduce the risk of injury, do not insert fin-

gers or foreign objects into air inlet/outlet

grills. If the unit is left on a damaged base, it

may fall and cause injury.

To reduce the risk of injury, always wear

protective gear when working on units.

Do not release refrigerant into the atmo-

sphere. Collect and reuse the refrigerant, or

have it properly disposed of by an autho-

rized agency. Refrigerant poses environ-

mental hazards if released into the air.

ii

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Chapters

Troubleshooting

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This manual is also suitable for:

Puhy-hp250ynw-a Puhy-hp400ysnw-a Puhy-hp500ysnw-a