U-50PE2E5A, U-100PE1E8A, U-100PEY1E8, U-125PE1E8A, U-125PEY1E8, U-140PE1E8A, U-140PEY1E8, S-100PU2E5B, S-125PU2E5B, S-140PU2E5B, S-71PU2E5B, S-100PF1E5B, S-125PF1E5B, S-140PF1E5B, S-71PF1E5B — Panasonic Air Conditioner Service Manual (repair manual). Page 3

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IMPORTANT!
Please Read Before Starting
This air conditioner must be installed by the sales dealer 
or installer.
This information is provided for use only by authorized 
persons.
For safe installation and trouble-free operation, you 
must:
  Carefully read this instruction booklet before beginning.
  Follow each installation or repair step exactly as shown.
  This air conditioner shall be installed in accordance with 
National Wiring Regulations.
  That compliance with national gas regulations shall be 
observed.
  The product meets the technical requirements of 
EN/IEC 61000-3-3.
  Pay close attention to all warning and caution notices 
given in this manual.
 
WARNING
This symbol refers to a hazard or 
unsafe practice which can result in 
severe personal injury or death.
 
CAUTION
This symbol refers to a hazard or 
unsafe practice which can result 
in personal injury or product or 
property damage.
If Necessary, Get Help 
These instructions are all you need for most installation 
sites and maintenance conditions. If you require help for 
a special problem, contact our sales/service outlet or your 
certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for 
improper installation or maintenance service, including 
failure to follow the instructions in this document.
 WARNING
 Do not use means to accelerate 
the defrosting process or to clean, 
other than those recommended by 
the manufacturer.
 The appliance shall be stored 
in a room without continuously 
operating ignition sources (for 
example: open flames, an 
operating gas appliance or an 
operating electric heater).
 Do not pierce or burn.
 Be aware that refrigerants may not 
contain an odour.
SPECIAL PRECAUTIONS
 WARNING  When Wiring
WARNING
Risk of Electric Shock
ELECTRICAL SHOCK CAN 
CAUSE SEVERE PERSONAL 
INJURY OR DEATH. ONLY A 
QUALIFIED, EXPERIENCED 
ELECTRICIAN SHOULD 
ATTEMPT TO WIRE THIS 
SYSTEM.
 Do not supply power to the unit until 
all wiring and tubing are completed or 
reconnected and checked.
 Highly dangerous electrical voltages are 
used in this system. Carefully refer to the 
wiring diagram and these instructions 
when wiring. Improper connections 
and inadequate grounding can cause 
accidental injury or death.
 Connect all wiring tightly. Loose wiring 
may cause overheating at connection 
points and a possible fire hazard.
 Provide a power outlet to be used 
exclusively for each unit.
 Provide a power outlet exclusively for 
each unit, and full disconnection means 
having a contact separation by 3 mm 
in all poles must be incorporated in the 
fixed wiring in accordance with the wiring 
rules.
  To prevent possible hazards from 
insulation failure, the unit must be 
grounded.
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 Check that cabling will not be subject 
to wear, corrosion, excessive pressure, 
vibration, sharp edges or any other 
adverse environmental effects.
  The check shall also take into account 
the effects of aging or continual vibration 
from sources such as compressors or 
fans.
  This equipment is strongly 
recommended to be installed with 
Earth Leakage Circuit Breaker (ELCB) 
or Residual Current Device (RCD). 
Otherwise, it may cause electrical 
shock and fire in case of equipment 
breakdown or insulation breakdown.
When Transporting
• It may need two or more people to carry
out the installation work.
• Be careful when picking up and moving
the indoor and outdoor units. Get a 
partner to help, and bend your knees 
when lifting to reduce strain on your 
back. Sharp edges or thin aluminum 
fins on the air conditioner can cut your 
fingers.
When storing…
 WARNING
• The appliance shall be stored
in a well-ventilated area where 
the room size corresponds to 
the room area as specified for 
operation.
• The appliance shall be stored
in a room without continuously 
operating open flames (for 
example: an operating gas 
appliance) and ignition sources 
(for example: an operating 
electric heater).
• The appliance shall be stored so as
to prevent mechanical damage from 
occurring.
When Installing…
• Select an installation location which is
rigid and strong enough to support or 
hold the unit, and select a location for 
easy maintenance.
• In cases that require mechanical
ventilation, ventilation openings shall be 
kept clear of obstruction.
…In a Room
Properly insulate any tubing run inside 
a room to prevent “sweating” that can 
cause dripping and water damage to 
walls and floors.
 CAUTION
Keep the fire alarm and 
the air outlet at least  
1.5 m away from the 
unit.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete 
blocks to provide a solid, level foundation 
for the outdoor unit. This prevents water 
damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down 
with bolts and a metal frame. Provide a 
suitable air baffle.
…In a Snowy Area (for Heat Pump-
type Systems)
Install the outdoor unit on a raised 
platform that is higher than drifting snow. 
Provide snow vents.
(Type K2) 
...At least 1.8m 
Indoor unit of this air conditioner shall be 
installed in a height of at least 1.8 m.
…In laundry rooms
Do not install in laundry rooms. Indoor 
unit is not drip proof.
When Connecting Refrigerant 
Tubing
Pay particular attention to refrigerant 
leakages.
(Type Y2)
(Type U2, Type T2, Type F1, Type N1)
...At least 2.5m
Indoor unit of this air conditioner shall be 
installed in a height of at least 2.5 m.
…At least 2.2m
Indoor unit of this air conditioner shall be 
installed in a height of at least 2.2m.
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