13
9. POWER
(1) The power source capacity must be
the sum of the room air conditioner
current and the current of other elec-
trical appliances. When the current
carrying capacity is insufficient,
change the circuit capacity.
(2) When the voltage is low and the air
conditioner is difficult to start, con-
tact the power company to have the
voltage raised.
(1) The rated voltage of this product is
230/208V A.C. 60Hz.
(2) Before turning on the verify that the
voltage is within the 187V to 253 V
range.
(3) Always use a special branch circuit
and install a special receptacle to
supply power to the air conditioner.
(4) Use a circuit breaker and receptacle
matched to the capacity of the air
conditioner.
(5) The circuit breaker is installed in the
permanent wiring. Always use a cir-
cuit that can trip all the poles of the
wiring and has an isolation distance
of at least 3 mm between the con-
tacts of each pole.
(6) Perform wiring work in accordance
with standards so that the room air
conditioner can be operated safely
and positively.
(7) Install a leakage circuit breaker in
accordance with the related laws
and regulations and electric com-
pany standards.
• Short circuit will occur after approx.
3 minutes and the power circuit fuse blows.
Disconnect
switch
Grounding line
Indoor unit
Outdoor unit
Fig. 40
Problem 1
• Air conditioner will not operate.
• Compressor will not start; only indoor unit will operate.
• Connector trade size for this unit is 1/2”. The con-
nector can be bought at a hardware store. Refer to
“How to connect wiring to the terminals” for
instructions on connecting depending on the wire
type you are using.
• The fuse located in the outdoor unit provides
power supply protection and may blow when
power is applied if the system has been incorrectly
wired.
Problem 2
Problem 3
NOTE
(A)
Disconnect
switch
Grounding line
Indoor unit
Outdoor unit
(B)
Disconnect
switch
Grounding line
Indoor unit
Outdoor unit
(D)
Disconnect
switch
Grounding line
Indoor unit
Outdoor unit
(C)
Disconnect
switch
Grounding line
Indoor unit
Outdoor unit
(E)
Fig. 41 WIRING SYSTEM DIAGRAM
INDOOR
INDOOR UNIT
Terminal
Disconnect
switch
(Field supply)
14WG
(Inter-unit)
Power lines
230/208 V
230/208 V
230/208 V
Grounding
line
OUTDOOR UNIT
Terminal
Fuse
Power supply line
Single-phase, 230/208 V
14AWG
