Mitsubishi Electric PAA-A18AA1 Service Manual page 17

WARNING
• Be sure to ground the PAA unit and outdoor unit.
– Do not connect the earth cable to any gas pipe, water pipe, lightning rod, or telephone
earth cable. Incomplete grounding may cause a risk of electric shock. If the supply
cord is damaged, it must be replaced by a dealer, contractor or technician with
certifications as required by laws and codes, in order to avoid a hazard.
• Service the power cable so that tension is not applied to the cable.
– Tension may cause the cable to break and generate heat and cause a fire.
• Install a circuit breaker as required by all applicable codes and regulations and be sure
to use a qualified electrician/installer.
• Use power line cables of sufficient current carrying capacity and rating.
– Cables that are too small may leak, generate heat, and cause a fire.
• When sizing wire and completing electrical connections during service, please follow
local codes and standards.
– Fuse or circuit breaker of a larger capacity or a steel or copper wire may result in a
general unit failure or fire.
• Do not wash the PAA unit.
– Washing the PAA unit may cause an electric shock.
• Ensure that the installation base is not damaged.
– If damaged, the unit may fall and cause personal injury or property damage.
• Service the drain piping according to the PAA unit installation manual to ensure proper
drainage. Wrap thermal insulation around the pipes to prevent condensation.
– Improper drain piping may cause water leakage and damage to furniture and other
possessions.
• Be very careful about product transportation.
– If the product weighs more than 20 kg [44 lb], more than one person should carry the
product.
– Some products use polypropylene band (PP) bands for packaging. Do not use any PP
bands for a means of transportation; it is dangerous.
– Do not touch the heat exchanger fins. Doing so may cut your fingers.
• Safely dispose of the packing materials.
– Packing materials, such as nails and other metal or wooden parts, may cause stabs or
other injuries.
– Tear apart and throw away plastic packaging bags so that children will not play with
them. If children play with a plastic bag which was not torn apart, they face the risk of
suffocation.
• Before installing or servicing system, always turn off main power to system. There may
be more than one disconnect switch. Tag disconnect switch with a warning label.
– Failure to follow this warning could result in personal injury or death.
• Always disconnect power to the furnace before removing the blower door.
– Failure to disconnect power may result in electric shock or injury.
• Label all wires prior to disconnection when servicing controls. Verify proper operation
after servicing.
– Wiring errors can cause improper and dangerous operation.
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
17 © 2022 Mitsubishi Electric US, Inc.