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4
ELECTRICAL WIRING
1. CONNECTION DIAGRAM
Connection cord
WARNING
(1) Before starting work, check that power is not being sup-
plied to indoor unit and the outdoor unit.
3
2
(N)
(2) Match the terminal block numbers and connection cord
1
colors of the indoor unit and the outdoor unit. Errone-
ous wiring may cause burning of the electric parts.
Indoor unit side
terminal block
(3) Connect the connection cords firmly to the terminal
block. Imperfect installation may cause a fire.
Outdoor unit side
To power supply
terminal block
(4) Always fasten the outside covering of the connection
and ground
cord with the cord clamp. (If the insulator is chafed,
Power supply cord
electric leakage may occur.)
(5) Always connect the ground wire.
2. OUTDOOR UNIT SIDE
(1) Process the end of the connection cords to the dimensions shown in
figure.
(2) Connect the end of the connection cord fully into the terminal block
HOW TO CONNECT WIRING
and fasten with the screws.
TO THE TERMINALS
(3) Fasten the sheath with a cord clamp.
(4) Pass the connection cord and power cord through the hole of the
A. For solid core wiring
3-way valve bracket and run them to the outside of the cabinet.
Do not block the ventilation slots in the cabinet when wiring the power
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
cord and connection cords.
the insulation to about 25 mm (15/16") to expose the solid wire.
(5) Install the terminal cover and valve cover as shown in figure.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
Pass the power cord and connections cords through the valve cover
board.
when wiring them.
(3) Using pliers, bend the solid wire to form a loop suitable for the
terminal screw.
1 2
(N)
3
L
N
(4) Shape the loop wire properly, place it on the terminal board and
Terminal board
tighten securely with the terminal screw using a screwdriver.
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 10 mm (3/8") to expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
Power cord
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the ter-
minal screw using a screwdriver.
A. Solid wire
B. Strand wire
Round
terminal
Loop
1
2
(N)
3
L
N
Connection cord
Insulation
Screw with
special washer
Screw with
special washer
Round
terminal
Round
Terminal
terminal
Wire
board
Wire
Terminal block
Cabinet
6
7
TEST RUNNING
CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating
CAUTION
manual:
Always turn on the power 4 hours prior to the start of the
(1) Starting and stopping method, operation switching, temperature ad-
operation in order to ensure compressor protection.
justment, timer, air flow switching, and other remote control unit op-
erations.
• Perform test operation and check items (1) to (3) below.
(2) Air filter removal and cleaning, and how to use the air louvers.
• For the operation method, refer to the operating manual.
(3) Give the operating manual and installation instruction sheet to the
• The outdoor unit may not run, depending on the room temperature.
customer.
In this case, the 'TEST RUN' signal is received during air conditioner
operation. (For information on the 'TEST RUN', refer to the installation
instruction sheet included with the indoor unit or the operating manual.)
Operation can be checked by lighting and flashing of the display section
OPERATION and TIMER lamps.
Perform judgement in accordance with the following.
• Test running
When the air conditioner is run by pressing the remote control unit
TEST RUN button, the OPERATION and TIMER lamps flash slowly
at the same time.
• Error
The LED lamp of an outdoor unit operates as follows (Table 8) ac-
cording to the contents of an error.
Table 8
Error contents
LED (RED)
Serial signal error
1 time blink
Discharge pipe thermistor error
2 times blink
Heat exchanger thermistor error
3 times blink
Outdoor temperature thermistor error
4 times blink
Compressor thermistor error
7 times blink
Pressure switch error
8 times blink
Current trip error
10 times blink
CT error
11 times blink
Compressor position detection error
12 times blink
Compressor starting error
13 times blink
Timer error
14 times blink
CHECK ITEMS
OUTDOOR UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
• Do not operate the air conditioner in the test running state for a long
time.
• For the operation method, refer to the operating manual and perform
operation check.
5
(1) The rated voltage of this product is 230 V A.C. 50 Hz.
Terminal cover
3
(2) Before turning on the verify that the voltage is within
2
(N)
the 198 V to 264 V range.
1
N
(3) Always use a special branch circuit and install a spe-
L
cial breaker to supply power to the air conditioner.
(4) Use a circuit breaker matched to the capacity of the air
conditioner. (Install in accordance with standard)
(5) The circuit breaker is installed in the permanent wiring.
Always use a circuit that can trip all the poles of the
wiring and has an isolation distance of at least 3 mm
between the contacts of each pole.
(6) Perform wiring work in accordance with standards so
that the air conditioner can be operated safely and posi-
tively.
(7) Install a leakage circuit breaker in accordance with the
related laws and regulations and electric company
standards.
(1) The power source capacity must be the sum of the air
conditioner current and the current of other electrical
appliances. When the current contracted capacity is in-
sufficient, change the contracted capacity.
(2) When the voltage is low and the air conditioner is diffi-
cult to start, contact the power company the voltage
raised.
Cord clamp
Insulation tube
Connection cord
Valve cover
Connection pipe
Power cord
PART NO. 9374318117
POWER
WARNING
CAUTION
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