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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.

(N)

(2) Match the terminal block numbers and connection cord

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)

(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

(N)

Connection cord

Insulation

Screw with

special washer

Screw with

special washer

Round

terminal

Round

Terminal

terminal

Wire

board

Wire

Terminal block

Cabinet

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.

(1) The rated voltage of this product is 230 V A.C. 50 Hz.

Terminal cover

(2) Before turning on the verify that the voltage is within

(N)

the 198 V to 264 V range.

(3) Always use a special branch circuit and install a spe-

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