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P5417050-rev.1
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When installing the power lines, do not apply tension to the cables. Secure the suspended cables at
regular intervals, but not too tightly.
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Make sure that the terminals do not come into contact with the surface of the electrical box. If the
terminals are too close to the surface, it may lead to failures at the terminal connection.
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Turn OFF and disconnect the unit from the power supply when handling the service connector. Do
not open the service cover or access panel to the indoor or outdoor units without turning OFF the
main power supply.
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After stopping operation, be sure to wait at least five minutes before turning off the main power
switch. Otherwise, water leakage or electrical breakdown may result. Disconnect the power supply
completely before attempting any maintenance for electrical parts. Confirm that no residual voltage is
present after disconnecting the power supply.
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Do not clean with, or pour water into, the controller as it could cause electric shock and/or damage
the unit. Do not use strong detergent such as a solvent. Clean with a soft cloth.
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Check that the ground wiring is securely connected. Do not connect ground wiring to gas piping,
water piping, lighting conductor, or telephone ground wiring.
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If a circuit breaker or fuse is frequently activated, shut down the system and contact your service
contractor.
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This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized measure
for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent
protection switches, and wiring in accordance with local, state and NEC codes and requirements. The
equipment installer is responsible for understanding and abiding by applicable codes and requirements.
