IVT 09LR-N, 12LR-N Service Manual

TopPage

12LRN

SERVICE MANUAL

SPLIT TYPE

AIR TO AIR HEAT PUMP

MODEL

In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified should be used.

CONTENTS

CHAPTER 1. SPECIFICATION

[1] SPECIFICATION ...........................................1-1

[2] EXTERNAL DIMENSION ..............................1-3

[3] WIRING DIAGRAM .......................................1-4

[4] ELECTRICAL PARTS....................................1-4

CHAPTER 2. EXPLAMATION OF CIRCUIT AND OP-

ERATION

[1] BLOCK DIAGRAMS ...................................... 2-1

[2] MICROCOMPUTER CONTROL SYSTEM........2-3

[3] FUNCTION ....................................................2-7

[4] OPERATION MANUAL................................2-16

12LR-N

09LR-N

[5] GENERAL TROUBLESHOOTING CHART........ 3-6

[6] MALFUNCTION (PARTS) CHECK METH-

OD.................................................................. 3-8

[7] OUTDOOR UNIT CHECK METHOD ............3-11

[8] TROUBLESHOOTING GUIDE .................... 3-14

CHAPTER 4. REFRIGERATION CYCLE

[1] FLOW FOW REFRIGERANT ........................ 4-1

[2] STANDARD CONDITION .............................. 4-1

[3] TEMPERATURE AT EACH PART AND

PRESSURE IN 3-WAY VALVE....................... 4-1

[4] PERFORMANCE CURVES ........................... 4-2

CHAPTER 3. FUNCTION AND OPERATION OF PRO-

TECTIVE PROCEDURES

[1] PROTECTION DEVICE FUNCTIONS AND

OPERATIONS ...............................................3-1

[2] AIR TO AIR HEAT PUMP OPERATION IN

THERMISTOR ERROR.................................3-3

[3] THERMISTOR TEMPERATURE CHAR-

ACTERISTICS............................................... 3-5

[4] HOW TO OPERATE THE OUTDOOR

UNIT INDEPENDENTLY ...............................3-6

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.

CHAPTER 5. DISASSEMBLY PROCEDURE

[1] INDOOR UNIT ............................................... 5-1

[2] THE WIRE GUARD AND THE PLASM-

CLUSTER UNIT............................................. 5-4

[3] OUTDOOR UNIT ........................................... 5-6

Parts Guide

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

12LRN

12LRN

CHAPTER 1. SPECIFICATION

Service Manual

[1] SPECIFICATION

1. 12LR-N

MODEL INDOOR UNIT OUTDOOR UNIT

ITEMS 12LR-N

Rated cooling capacity (Min– Max.) kW 3.50 (1.40 - 4.00)
Rated heating capacity (Min–Max.) kW 4.20 (1.40 - 6.00)
Moisture removal (at cooling) Liters/h 1.2
Electrical data
Phase 1
Rated frequency Hz 50
Rated voltage V 220-240

Rated current ☆
(Min - Max.)

Rated input ☆
(Min - Max.)

Power factor ☆

Maximum operating current A 9.1
Compressor Type Hermetically sealed rotary type

Refrigerant system Evaporator Louver Fin and Grooved tube type

Noise level
(at cooling)

Fan system
Drive Direct drive
Air flow quantity

(at cooling)

Fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 3/8", 1/4"
Drain piping mm O.D 16
Others
Safety device Compressor: Thermistor

Air filters Polypropylene net (Washable)
Net dimensions Width mm 770 780

Net weight kg 9 34

NOTE: The conditions of star”✩” marked item are based on ‘EN14511’.

Cool A 4.7 (2.0 - 6.3 )
Heat A 4.6( 1.7 - 8.2 )
Cool W 980 (350- 1300)
Heat W 970 (290 - 1700)
Cool % 91
Heat % 92

Model 5RS102XBE01
Oil charge RB68A 320cc

Condenser Corrugate Fin and Grooved tube type
Control Expansion valve
Refrigerant (R410A) 1140g
De-lce system Micro computer controled reversed systems
High dB(A) 43 48
Low dB(A) – –
Soft dB(A) 27 –

High m3/min. 9.8 32.5
Low m3/min. 7.5 –
Soft m3/min. 5.2 –

Fan motors: Inherent thermistor
Fuse, Micro computer control

Height mm 260 540
Depth mm 248 265

1 – 1

2. 09LR-N

MODEL INDOOR UNIT OUTDOOR UNIT

ITEMS 09LR-N

Rated cooling capacity (Min– Max.) kW 2.50(1.40 - 3.00)
Rated heating capacity (Min–Max.) kW 3.20 (1.40 - 5.00)
Moisture removal (at cooling) Liters/h 0.8
Electrical data
Phase 1
Rated frequency Hz 50
Rated voltage V 220-240

Rated current ☆
(Min - Max.)

Rated input ☆
(Min - Max.)

Power factor ☆

Maximum operating current A 8.1
Compressor Type Hermetically sealed rotary type

Refrigerant system Evaporator Louver Fin and Grooved tube type

Noise level
(at cooling)

Fan system
Drive Direct drive
Air flow quantity

(at cooling)

Fan Cross flow fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 3/8", 1/4"
Drain piping mm O.D 16
Others
Safety device Compressor: Thermistor

Air filters Polypropylene net (Washable)
Net dimensions Width mm 770 780

Net weight kg 9 34

Cool A 2.9 (2.0 - 3.9 )
Heat A 3.4( 1.7 - 6.3 )
Cool W 570 (350- 800)
Heat W 700 (290 - 1300)
Cool % 85
Heat % 90

Model 5RS102XBE01
Oil charge RB68A 320cc

Condenser Corrugate Fin and Grooved tube type
Control Expansion valve
Refrigerant (R410A) 1140g
De-lce system Micro computer controled reversed systems
High dB(A) 42 45
Low dB(A) – –
Soft dB(A) 26 –

High m3/min. 9.4 28.3
Low m3/min. 7.0 –
Soft m3/min. 4.7 –

Fan motors: Inherent thermistor
Fuse, Micro computer control

Height mm 260 540
Depth mm 248 265

12LRN

NOTE: The conditions of star”✩” marked item are based on ‘EN14511’.

1 – 2

12LRN

㧔Unit㧦㨙㨙㧕

22.0

58

18.5

175

INVERTERAIRCONDITIONER

770

248

260

760

265

780

540

14

167.5

165

540

299

72

58

37.5

12

4.5

324

135

81

136

[2] EXTERNAL DIMENSION

1. Indoor unit

2. Outdoor unit

1 – 3

[3] WIRING DIAGRAM

l

1. Indoor unit

2. Outdoor unit

12LRN

[4] ELECTRICAL PARTS

1. Indoor unit

DESCRIPTION MODEL REMARKS

Indoor fan motor MLB469 DC motor
Transformer – RTRNWA054JBZZ
FUSE1 – QFS-GA078JBZZ (250V, 3.15A)

2. Outdoor Unit

DESCRIPTION MODEL REMARKS

Compressor 5RS102XBE01 DC motor
Outdoor fan motor MLB427 DC motor
Fu3 – QFS-GA077JBZZ(250V, 2A)
Fu2 – QFS-GA078JBZZ(250V, 3.15A)
Fu1 – QFS-CA001JBZZ(250V, 20A)
Fu5 – QFS-CA002JBZZ(250V, 15A)

1 – 4

12LRN

AC power

Rectification circuit

CPU

3.15A
Fuse

DC power supply circuit

Fan motor PWM control circuit

Rotation pulse input circuit

AC clock circuit

Remote controller signal reception circuit

Buzzer drive circuit

CPU reset circuit

CPU oscillator circuit

Room temp. detect circuit

Heat exchanger pipe thermo circuit

Select circuit

Serial I/O circuit

Auto restart circuit

Test run circuit

Auxiliary mode

Power on circuit

Cluster generator drive circuit

Indoor fan motor

Fan motor pulse detect

Wireless remote control operation

Audible operation confirmation

Room temp. thermistor

Heat exchanger pipe thermistor

Indoor/outdoor control signal I/O

Test run (forced operation)

Auxiliary mode button ON/OFF

Self diagnostics, fault diagnosis

Cluster generator

Unit-unit wiring
(AC power and
serial signals)

LED Drive circuit

LED display

Louver motor drive circuit (Horizontal)

How direction control (Horizontal louver motor)

Heat only

12LRN

CHAPTER 2. EXPLAMATION OF CIRCUIT AND OPERATION

Service Manual

[1] BLOCK DIAGRAMS

1. Indoor unit

2 – 1

2. Outdoor unit

CPU

20A

protection

15A

protection

Expansion valve drive circuit Expansion valve

Suction temp. thermo. circuit Suction pipe thermistor

2-way valve temp. thermo. circuit 2-way valve thermistor

3.15A

protection

15A

protection

Power supply circuit

CPU oscillator circuit

DC overvoltage detection circuit

Outdoor fan drive circuit

4-way valve relay drive circuit

Power transistor module drive circuit

Serial I/O circuit

CPU reset circuit

Position detection circuit

AC overcurrent detection circuit

Compressor thermo circuit

Heat exchanger pipe thermo circuit

Outdoor temp. thermo. circuit

LED drive circuit

Test mode circuit

Power factor
converter circuit

Filter

circuit

Smoothing
circuit

Pulse amplitube modulation circuit

AC clock circuit

DC overcurrent detection circuit

IGBT

Unit-unit wiring (AC power
and serial signals)

Outdoor fan

4-way valve

Power transistor module

Compressor

Current transformer

Compressor thermistor

Heat exchanger pipe thermistor

Outdoor temperature thermistor

LED

Terminal board, Terminal fuse, circuit

Terminal board, Terminal fuse

12LRN

2 – 2

12LRN

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㧜㧚㧝Ǵ

㧺㧾㧝

㧡㧠㧟㧞㧝

㧯㧺㧣

㧢

㧾㧲㧞㧜㧝㧸㧞㧿

㧾㧝㧜㧟ޓ㧝㧛㧠㨃ޓ㧝㧚㧤㧷

㧾㧝㧜㧞ޓ㧝㧛㧠㨃ޓ㧝㧚㧤㧷

㧹㧻㨀㧻㧾

㧸㧻㨁㨂㧱㧾

㧝㧞㧟㧠㧡㧢㧣

㧤

㧞㧡㨂

㧠㧣㧜Ǵ

㧡㨂

㧯㧟㧜

㧶㧼㧣

㧰㧝㧝

㧡㧜㨂

㧯㧝㧢

㧜㧚㧜㧝Ǵ

㧽㧟

㧡㨂

㧡㨂

㧤㧣㧢㧡㧠㧟㧞

㧝

ࠪ࡝ࠕ࡞࿁〝

㧿㧱㧾㧵㧭㧸ޓ㧿㧵㧳㧺㧭㧸ޓ㧯㧵㧾㧯㨁㧵㨀

ࠝ࡯࠻࡝ࠬ࠲࡯࠻

㧭㨁㨀㧻ޓ㧾㧱㧿㨀㧭㧾㨀

㧱㧰㨆㧡㧚㧝㧮

㨆㧰㧟

㧾㧝㧜㧡ޓ㧝㧛㧠㨃ޓ㧝㧚㧤㧷

㧾㧝㧜㧢ޓ㧝㧛㧠㨃ޓ㧝㧚㧤㧷

㧾㧝㧜㧠ޓ㧝㧛㧠㨃ޓ㧝㧚㧤㧷

㧾㧝㧜㧣ޓ㧝㧛㧠㨃ޓ㧝㧚㧤㧷

㧽㧝㧜㧟

㧽㧝㧜㧞

㧽㧝㧜㧝

㧾㧣㧢

㧝㧛㧠㨃

㧝㧚㧤㧷

㧮㨆㧝

㧽㧢

㧢㧤㧜

㧾㧟㧤

㧶㧼㧝

㧟

㧠

㧝㧜㧜Ǵ

㧯㧠㧟

㧟㧡㨂

㧾㧟㧥

㧝㧜㧜㧷

㧝㧜㨂

㧯㧟㧝

㧝㧜㧜Ǵ

㧞

㧝

㧠

㧟

㧡㨂

㧯㧣

㧜㧚㧜㧝Ǵ

㧡㧜㨂

㧠

㧟

㧞

㧝

㧡㨂

㧯㧝㧤

㧯㧝㧥

㧞㧡㨂

㧝㧜㧜Ǵ

㧟㧡㨂

㧯㧞㧜

㧡㧜㨂

㧜㧚㧝Ǵ

㧜㧚㧝Ǵ

㧯㧝㧡

㧞㧡㨂

㧜㧚㧝Ǵ

㧼㧯㧟

㧼㧯㧤㧝㧣㧝㧢㧺㧵㧼

㧝㧡㨂

㧜㧚㧜㧠㧣Ǵ

㧯㧥

㧝㧜㧜Ǵ

㧟㧡㨂

㧯㧤

㨆㧰㧝

㧴㨆㧞㧠㧙㧞

㧾㧟㧣

㧟㧚㧟㧷

㧲㨁㧝

㧟㧚㧝㧡㧭㧙㧞㧡㧜㨂

㧝

㧼㧯㧝

㧼㧯㧞

㧼㧯㧤㧝㧣㨄㧼㧟

㧝㧠

㧞㧟

㧞㧟

㧠㧝

㧺㧯

㧼㧝㧠㧜

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯
㧺㧯
㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧺㧯

㧼㧜㧜

㧼㧝㧠㧝

㧭㧺㧝㧣
㧭㧺㧝㧢
㧭㧺㧝㧡
㧭㧺㧝㧠
㧭㧺㧝㧟
㧭㧺㧝㧞

㧼㧝㧟㧜

㧼㧜㧝

㧼㧜㧞

㧼㧜㧟

㧼㧜㧠

㧼㧞㧜

㧼㧞㧝

㨀㨄㧰㧜

㧾㨄㧰㧜

㧼㧝㧜

㧼㧝㧟

㧼㧝㧠

㧼㧝㧡

㧼㧝㧢

㧼㧝㧣

㧼㧡㧡

㧼㧡㧠

㧼㧡㧟

㧼㧡㧝

㧼㧡㧜

㧵㧺㨀㧼㧟
㧼㧜㧡
㧼㧜㧢

㧼㧣㧟
㧼㧣㧠

㧼㧟㧝

㧼㧝㧞㧟

㧼㧝㧞㧠

㧼㧝㧞㧜

㧼㧢㧟
㧼㧢㧞
㧿㧰㧭㧜
㧿㧯㧸㧜

㧱㨂㧰㧰㧜

㧱㨂㧿㧿㧜

㨂㧿㧿

㧾㧱㧳㧯㨄㧝㨄㧞

㧲㧸㧹㧰㧜

㧾㧱㧿㧱㨀

㨀㧻㧻㧸㧜

㨀㧻㧻㧸㧝

㧼㧠㧞

㧼㧠㧟

㧢㧠

㧢㧟

㧢㧞

㧢㧝

㧢㧜

㧡㧥

㧡㧤

㧡㧣

㧡㧢

㧡㧡

㧡㧠

㧡㧟

㧡㧞

㧡㧝

㧡㧜

㧠㧥

㧠㧤㧠㧣㧠㧢㧠㧡㧠㧠㧠㧟㧠㧞㧠㧝㧠㧜㧟㧥㧟㧤㧟㧣㧟㧢㧟㧡㧟㧠

㧟㧟

㧟㧞
㧟㧝
㧟㧜
㧞㧥
㧞㧤
㧞㧣
㧞㧢
㧞㧡
㧞㧠
㧞㧟
㧞㧞
㧞㧝
㧞㧜
㧝㧥
㧝㧤
㧝㧣

㧼㧡㧞

㧭㨂㧾㧱㧲

㧭㨂㧿㧿

㧝㧢㧝㧡㧝㧠

㨂㧰㧰

㧼㧣㧣

㧼㧣㧢

㧼㧣㧡

㧼㧣㧞

㧼㧣㧝

㧼㧣㧜

㧝㧞㧟

㧠

㧡

㧢

㧣

㧤

㧥

㧝㧟㧝㧞㧝㧝

㧝㧜

㧰㧝

㧰㧝㧺㧢㧜

㧝㧛㧞㨃

㧝㧛㧞㨃

㧾㧣

㧾㧢

㧞㧜㧜㧷

㧞㧜㧜㧷

㧾㧤

㧟㧥㧷

㧼㨛㨣㨑㨞㧕

㧔㧲㨡㨘㨘

㧵㧯㧝㧜㧝

㧠㧣

㧾㧝㧜㧝

㧝㧢㨂

㧠㧣Ǵ

㧯㧝㧜㧝

㧗

㧯㧝㧜㧞

㧜㧚㧝Ǵ

㧡㧜㨂

㧰㧵㧿㧼㧸㧭㨅ޓ㧒ޓ㧾㧱㧯㧱㧵㨂㧱㧾ޓ㧼㨃㧮

⴫␜㧒ฃశၮ᧼

ᔕᕆㆇォ㧿㨃

㧿㨃㧝ޓ㧦ޓ㧭㨁㨄㧚㧔㨀㧱㧿㨀ޓ㧾㨁㧺㧕

㧔㧼㧯㧵㧕

㧸㧱㧰㧝㧜㧠

㧔㨀㨕㨙㨑㨞㧕

㧔㧼㨛㨣㨑㨞㧕

㧟㧝㧞

㧝㧞㧟㧠㧡㧢㧣

㧤

㧸㧱㧰㧝㧜㧝

㧸㧱㧰㧝㧜㧞

㧸㧱㧰㧝㧜㧟

㧮㧯㧺㧝㧜㧝

㧿㨃㧝

㧞

㧟

㧝

㧞

[2] MICROCOMPUTER CONTROL SYSTEM

1. Indoor unit

1.1. Electronic control circuit diagram

2 – 3

1.2. Printed wiring board

For 9LRN/2LRN model main PWB

From louver motor

From display PWB

From thermistor

(PDAI-A248JBWZ)

From Plasma Cluster generator

To Terminal board [2]

From Fan motor

To Terminal board [1]

To Terminal board [N]

To Eauth Terminal

For 9LRN/LRN model display PWB

To Main PWB CN5

12LRN

2 – 4

12LRN

㧲㧯㧟

㧲㧯㧝㧲㧯㧞

㧻㧾㧭㧺㧳㧱

㨃㧴㧵㨀㧱

㧾㧱㧰

㨀㧥

㨀㧤

㨀㧣

㧺

㧯㧵㧺

㧼
㧞㧠

㧝㧡

㧞㧜

㧞㧝

㧞㧞

㧞㧟

㧜㧚㧟㧟㨡

㧠㧜㧜㨂

㧡㧡㧜㨡㧲

㧼㧿㧞㧝㧥㧭㧠

㧵㧼㧹

㧲㨁㧡

㧞㧡㧜㨂˴㧝㧡㧭

㧞㧣㧜㧷㧲

㧞㧣㧜㧷㧲

㧯㧥

㧡㧡㧜㨡㧲

㧠㧜㧜㨂

㧯㧝㧜

㧔㧰㨑㨎㨡㨓˴㧻㨡㨠㨜㨡㨠㧕

㧔㧰㨑㨎㨡㨓˴㧻㨡㨠㨜㨡㨠㧕

㧡㧜㧡㧜㧡㧜㧡㧜

㧡㧝㧡㧞㧡㧟㧡㧠㧡㧡㧡㧢㧡㧣㧡㧤㧡㧥㧢㧜㧢㧝㧢㧞㧢㧟㧢㧠㧢㧡㧢㧢㧢㧣㧢㧤㧢㧥㧣㧜㧣㧝㧣㧞㧣㧟

㧣㧠

㧣㧡

㧡㧝㧡㧞㧡㧟㧡㧠㧡㧡㧡㧢㧡㧣㧡㧤㧡㧥㧢㧜㧢㧝㧢㧞㧢㧟㧢㧠㧢㧡㧢㧢㧢㧣㧢㧤㧢㧥㧣㧜㧣㧝㧣㧞㧣㧟

㧣㧠

㧣㧡

㧡㧝㧡㧞㧡㧟㧡㧠㧡㧡㧡㧢㧡㧣㧡㧤㧡㧥㧢㧜㧢㧝㧢㧞㧢㧟㧢㧠㧢㧡㧢㧢㧢㧣㧢㧤㧢㧥㧣㧜㧣㧝㧣㧞㧣㧟

㧣㧠

㧣㧡

㧡㧝㧡㧞㧡㧟㧡㧠㧡㧡㧡㧢㧡㧣

㧡㧤

㧢㧜㧢㧝㧢㧞㧢㧟㧢㧠㧢㧡㧢㧢㧢㧣㧢㧤㧢㧥㧣㧜㧣㧝㧣㧞㧣㧟㧣㧠

㧣㧡

㧣㧢㧣㧢㧣㧢㧣㧢

㧥㧤㧥㧣 㧥㧤㧥㧣㧥㧤㧥㧣 㧥㧤㧥㧣

㧥㧝㧥㧜㧤㧥㧤㧤㧤㧣㧤㧢㧤㧡㧤㧠㧤㧟㧤㧞㧤㧝㧤㧜㧣㧥㧣㧤㧣㧣

㧥㧢㧥㧡㧥㧠㧥㧟㧥㧞

㧥㧝㧥㧜㧤㧥㧤㧤㧤㧣㧤㧢㧤㧡㧤㧠㧤㧟㧤㧞㧤㧝㧤㧜㧣㧥㧣㧤㧣㧣

㧥㧢㧥㧡㧥㧠㧥㧟㧥㧞

㧥㧝㧥㧜㧤㧥㧤㧤㧤㧣㧤㧢㧤㧡㧤㧠㧤㧟㧤㧞㧤㧝㧤㧜㧣㧥㧣㧤㧣㧣

㧥㧢㧥㧡㧥㧠

㧥㧟㧥㧞

㧥㧝㧥㧜㧤㧥㧤㧤㧤㧣㧤㧢㧤㧡㧤㧠㧤㧟㧤㧞㧤㧝㧤㧜㧣㧥㧣㧤㧣㧣

㧥㧢㧥㧡㧥㧠㧥㧟㧥㧞

㧞㧥㧞㧤㧞㧥㧞㧤㧞㧥㧞㧤㧞㧥㧞㧤㧟㧠 㧟㧟㧟㧞 㧟㧝㧟㧜

㧠㧥 㧠㧤㧠㧣 㧠㧢㧠㧡 㧠㧠 㧠㧟㧠㧞 㧠㧝㧠㧜 㧟㧥 㧟㧤㧟㧣 㧟㧢 㧟㧡

㧟㧠 㧟㧟㧟㧞 㧟㧝㧟㧜

㧠㧥 㧠㧤㧠㧣 㧠㧢㧠㧡 㧠㧠 㧠㧟㧠㧞 㧠㧝㧠㧜 㧟㧥 㧟㧤㧟㧣 㧟㧢 㧟㧡

㧟㧠 㧟㧟㧟㧞 㧟㧝㧟㧜

㧠㧥 㧠㧤㧠㧣 㧠㧢㧠㧡 㧠㧠 㧠㧟㧠㧞 㧠㧝㧠㧜 㧟㧥 㧟㧤㧟㧣 㧟㧢 㧟㧡

㧟㧠 㧟㧟㧟㧞 㧟㧝㧟㧜

㧠㧥 㧠㧤㧠㧣 㧠㧢㧠㧡 㧠㧠 㧠㧟㧠㧞 㧠㧝㧠㧜 㧟㧥 㧟㧤㧟㧣 㧟㧢 㧟㧡

㧞㧢㧞㧣 㧞㧢㧞㧣㧞㧢㧞㧣 㧞㧢㧞㧣

㧝㧜㧜㧝㧜㧜㧝㧜㧜㧝㧜㧜

㧥㧥㧥㧥㧥㧥㧥㧥

㧝

㧝㧜㧝㧝㧝㧞㧝㧟㧝㧠㧝㧡㧝㧢㧝㧣㧝㧤㧝㧥㧞㧜㧞㧝㧞㧞㧞㧟㧞㧠

㧞㧟㧠

㧡

㧥

㧤

㧣

㧢

㧝

㧝㧜㧝㧝㧝㧞㧝㧟㧝㧠㧝㧡㧝㧢㧝㧣㧝㧤㧝㧥㧞㧜㧞㧝㧞㧞㧞㧟㧞㧠

㧞㧟㧠

㧡

㧥

㧤

㧣

㧢

㧝

㧝㧜㧝㧝㧝㧞㧝㧟㧝㧠㧝㧡㧝㧢㧝㧣㧝㧤㧝㧥㧞㧜㧞㧝㧞㧞㧞㧟㧞㧠

㧞㧟㧠

㧡

㧥

㧤

㧣

㧢

㧝

㧝㧜㧝㧝㧝㧞㧝㧟㧝㧠㧝㧡㧝㧢㧝㧣㧝㧤㧝㧥㧞㧜㧞㧝㧞㧞㧞㧟㧞㧠

㧞㧟㧠

㧡

㧥

㧤

㧣

㧢

㧞㧡㧞㧡㧞㧡㧞㧡

㧢㧚㧤㧷

㧯㧝㧞㧣

㧡㨂

㧞㧡㨂

㨐

㨑

㧾㧔㨂㧕

㧯㧔㨃㧕

㧿㧔㨁㧕

㧝㧜㧜㧜㧼

㧯㧝㧞㧞

㧡㧜㨂

㨆㧰㧟

㧝㧚㧤㧷㧲

㧾㧡㧜

㧜㧚㧜㧞㧠

㧡㨃

㧾㧠㧥

㧡㧜㨂

㧡㧜㨂

㧜㨂

㧜㨂

㧡㧜㨂

㧞㧞㧜㨡

㧯㧣㧥

㧝㧜㨂

㧜㧚㧜㧝㨡

㧡㧜㨂

㧯㧥㧣

㧝㧛㧞㨃

㧝㧜㧜㧷

㧾㧝㧜㧞

㧾㧝㧜㧟

㧝㧛㧞㨃

㧝㧜㧜㧷

㧰㧝㧟

㧾㧝㧡㧢

㨀㧴㧝

㨀㧴㧞

㨀㧴㧟

㨀㧴㧠

㨀㧴㧡

㧔㧞㧙㨣㨍㨥˴㨢㨍㨘㨢㨑㧕

㧔㧿㨡㨏㨠㨕㨛㨚㧕

㧔㧻㨡㨠˴㨐㨛㨛㨞㧕

㧔㧴㨑㨍㨠

㨑㨤㨏㨔㨍㨚㨓㨑㧕

㧔㧯㨛㨙㨜㨞㨑㨟㨟㨛㨞㧕

㧯㧺㧤

㧝㧜

㧾㧣㧞
㧾㧣㧝
㧾㧣㧜
㧾㧢㧥
㧾㧢㧤

㧢㧚㧤㧷㧲㧡

㧡㧜㨂

㧜㧚㧜㧝㨡㧡

㧯㧢㧡

㧯㧢㧢

㧯㧢㧣

㧯㧢㧤

㧯㧢㧥

㧝㧜㧷

㧾㧢㧣

㧾㧢㧠˴㧝㧜㧷

㧾㧢㧡˴㧝㧜㧷

㧾㧢㧢˴㧝㧜㧷

㧾㧢㧟˴㧝㧜㧷

㧡㨂

㧔㨀㨔㨑㨞㨙㨕㨟㨠㨛㨞㧕

㧝㧜㧹㧴㨦

㧜㧚㧝㨡

㧯㧟㧝

㧞㧡㨂

㧡㨂

㧾㧤㧜

㧝㧜㧜㧷

㧠㧚㧣㨡

㧯㧟㧟

㧜㧘㧝㨡

㧞㧡㨂

㧯㧟㧞

㧾㧣㧥

㧝㧜㧜

㧞㧣㧜

㧾㧣㧤

㧾㧣㧣

㧾

㧜㨂

㧿㧙㧤㧜㧤㧠㧞㧯㧺

㧵㧯㧡

㧟

㧞

㧝

㧔㧾㨑㨟㨑㨠㧕

㧰

㧵㧼㧹

㨂㨁㧲㧮

㨂㨁㧲㧿

㧞

㧔㧵㧼㧹˴㧰㨞㨕㨢㨑㧕

㧝㧡㨂

㧰㧝㧝

㨆㧰㧠

㧝㧜㨡

㧡㧜㨂

㧯㧡㧜

㧞㧡㨂

㧯㧠㧥

㧜㧚㧝㨡

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㧼㧭㧝

㨂㧿㧿

㧼㧯㧜

㧼㧯㧝

㧼㧯㧞

㧼㧯㧟

㧼㧯㧠

㧼㧯㧡

㧼㧯㧢

㧼㧯㧣

㧼㧰㧜

㧼㧰㧝

㨂㧯㧯

㧭㨂㧯㧯㧝㧜

㧭㨂㧾㧴㧞

㧭㨂㧿㧿㧝㧜

㧼㧮㧜

㧼㧮㧝

㧼㧮㧞

㧼㧮㧟

㧼㧮㧠

㧼㧮㧡

㧼㧮㧢

㧼㧮㧣

㧼㧭㧜

㧼㧭㧝

㨂㧿㧿

㧼㧯㧜

㧼㧯㧝

㧼㧯㧞

㧼㧯㧟

㧼㧯㧠

㧼㧯㧡

㧼㧯㧢

㧼㧯㧣

㧼㧰㧜

㧼㧰㧝

㨂㧯㧯

㧭㨂㧯㧯㧝㧜

㧭㨂㧾㧴㧞

㧭㨂㧿㧿㧝㧜

㧼㧮㧜

㧼㧮㧝

㧼㧮㧞

㧼㧮㧟

㧼㧮㧠

㧼㧮㧡

㧼㧮㧢

㧼㧮㧣

㧼㧭㧜

㧼㧭㧝

㨂㧿㧿

㧼㧯㧜

㧼㧯㧝

㧼㧯㧞

㧼㧯㧟

㧼㧯㧠

㧼㧯㧡

㧼㧯㧢

㧼㧯㧣

㧼㧰㧜

㧼㧰㧝

㨂㧯㧯

㧭㨂㧯㧯㧝㧜

㧭㨂㧾㧴㧞

㧭㨂㧿㧿㧝㧜

㧼㧮㧜

㧼㧮㧝

㧼㧮㧞

㧼㧮㧟

㧼㧮㧠

㧼㧮㧡

㧼㧮㧢

㧼㧮㧣

㧼㧭㧜

㧼㧭㧝

㨂㧿㧿

㨂㧯㧯㨂㧯㧯㨂㧯㧯㨂㧯㧯

㧼㧤㧠

㧼㧤㧟

㧼㧤㧠

㧼㧤㧟

㧼㧤㧠

㧼㧤㧟

㧼㧤㧠

㧼㧤㧟

㧼㧶㧜

㧼㧶㧡

㧼㧴㧞

㧼㧳㧠

㧼㧳㧟

㧼㧳㧡

㧼㧴㧜

㧼㧳㧜

㧼㧳㧞

㧼㧴㧝

㧼㧶㧝

㧼㧶㧞

㧼㧶㧟

㧼㧶㧠

㧼㧶㧢

㧼㧶㧣

㧼㧤㧜

㧼㧤㧝

㧼㧤㧞

㧼㧳㧝

㧼㧶㧜

㧼㧶㧡

㧼㧴㧞

㧼㧳㧠

㧼㧳㧟

㧼㧳㧡

㧼㧴㧜

㧼㧳㧜

㧼㧳㧞

㧼㧴㧝

㧼㧶㧝

㧼㧶㧞

㧼㧶㧟

㧼㧶㧠

㧼㧶㧢

㧼㧶㧣

㧼㧤㧜

㧼㧤㧝

㧼㧤㧞

㧼㧳㧝

㧼㧶㧜

㧼㧶㧡

㧼㧴㧞

㧼㧳㧠

㧼㧳㧟

㧼㧳㧡

㧼㧴㧜

㧼㧳㧜

㧼㧳㧞

㧼㧴㧝

㧼㧶㧝

㧼㧶㧞

㧼㧶㧟

㧼㧶㧠

㧼㧶㧢

㧼㧶㧣

㧼㧤㧜

㧼㧤㧝

㧼㧤㧞

㧼㧳㧝

㧼㧶㧜

㧼㧶㧡

㧼㧴㧞

㧼㧳㧠

㧼㧳㧟

㧼㧳㧡

㧼㧴㧜

㧼㧳㧜

㧼㧳㧞

㧼㧴㧝

㧼㧶㧝

㧼㧶㧞

㧼㧶㧟

㧼㧶㧠

㧼㧶㧢

㧼㧶㧣

㧼㧤㧜

㧼㧤㧝

㧼㧤㧞

㧼㧳㧝

㧹㧰㧜

㧹㧰㧝

㧹㧰㧞

㧼㧾㧡

㧼㧾㧠

㨂㧯㧯

㧼㧿㧡

㧼㧿㧠

㨄㧜

㨄㧝

㨂㧿㧿

㧼㧭㧞

㧯

㧼㧾㧜

㧼㧾㧝

㨂㧯㧯

㨂㧿㧿

㧼㧾㧞

㧼㧾㧟

㧹㧰㧜

㧹㧰㧝

㧹㧰㧞

㧼㧾㧡

㧼㧾㧠

㨂㧯㧯

㧼㧿㧡

㧼㧿㧠

㨄㧜

㨄㧝

㨂㧿㧿

㧼㧭㧞

㧯

㧼㧾㧜

㧼㧾㧝

㨂㧯㧯

㨂㧿㧿

㧼㧾㧞

㧼㧾㧟

㧹㧰㧜

㧹㧰㧝

㧹㧰㧞

㧼㧾㧡

㧼㧾㧠

㨂㧯㧯

㧼㧿㧡

㧼㧿㧠

㨄㧜

㨄㧝

㨂㧿㧿

㧼㧭㧞

㧯

㧼㧾㧜

㧼㧾㧝

㨂㧯㧯

㨂㧿㧿

㧼㧾㧞

㧼㧾㧟

㧹㧰㧜

㧹㧰㧝

㧹㧰㧞

㧼㧾㧡

㧼㧾㧠

㨂㧯㧯

㧼㧿㧡

㧼㧿㧠

㨄㧜

㨄㧝

㨂㧿㧿

㧼㧭㧞

㧯

㧼㧾㧜

㧼㧾㧝

㨂㧯㧯

㨂㧿㧿

㧼㧾㧞

㧼㧾㧟

㧼㧿㧟

㧼㧿㧞

㧼㧿㧟

㧼㧿㧞

㧼㧿㧟

㧼㧿㧞

㧼㧿㧟

㧼㧿㧞

㧵㧺㧵㨀㨄

㧝㧜㧷

㧵㧯㧟

㧝㧜㧷㧲

㧾㧞㧢

㧝㧜㧷

㧲

㧝㧜㧷

㧞㧡㨂

㧜㧚㧝

㨡

㧜㨂

㧝㧡㧜

㨡

㧼㧿㧜

㧼㧿㧝

㧼㧿㧜

㧼㧿㧝

㧼㧿㧜

㧼㧿㧝

㧼㧿㧜

㧼㧿㧝

㧺㧹㧵㨄

㧼㧥㧝

㧼㧥㧜

㧼㧤㧣

㧼㧤㧢

㧼㧹㧜

㧼㧹㧝

㧼㧹㧞

㧼㧹㧟

㧼㧲㧜

㧼㧼㧜

㧼㧼㧝

㧼㧼㧞

㧼㧼㧟

㧼㧼㧠

㧼㧼㧡

㨂㧿㧿

㨂㧯㧯

㧼㧽㧜

㧼㧽㧝

㧼㧽㧞

㧼㧽㧟

㧼㧽㧠

㧼㧽㧡

㧼㧥㧝

㧼㧥㧜

㧼㧤㧣

㧼㧤㧢

㧼㧹㧜

㧼㧹㧝

㧼㧹㧞

㧼㧹㧟

㧼㧲㧜

㧼㧼㧜

㧼㧼㧝

㧼㧼㧞

㧼㧼㧟

㧼㧼㧠

㧼㧼㧡

㨂㧿㧿

㨂㧯㧯

㧼㧽㧜

㧼㧽㧝

㧼㧽㧞

㧼㧽㧟

㧼㧽㧠

㧼㧽㧡

㧼㧥㧝

㧼㧥㧜

㧼㧤㧣

㧼㧤㧢

㧼㧹㧜

㧼㧹㧝

㧼㧹㧞

㧼㧹㧟

㧼㧲㧜

㧼㧼㧜

㧼㧼㧝

㧼㧼㧞

㧼㧼㧟

㧼㧼㧠

㧼㧼㧡

㨂㧿㧿

㨂㧯㧯

㧼㧽㧜

㧼㧽㧝

㧼㧽㧞

㧼㧽㧟

㧼㧽㧠

㧼㧽㧡

㧼㧥㧝

㧼㧥㧜

㧼㧤㧣

㧼㧤㧢

㧼㧹㧜

㧼㧹㧝

㧼㧹㧞

㧼㧹㧟

㧼㧲㧜

㧼㧼㧜

㧼㧼㧝

㧼㧼㧞

㧼㧼㧟

㧼㧼㧠

㧼㧼㧡

㨂㧿㧿

㨂㧯㧯

㧼㧽㧜

㧼㧽㧝

㧼㧽㧞

㧼㧽㧟

㧼㧽㧠

㧼㧽㧡

㨂㧯㧯㨂㧯㧯㨂㧯㧯㨂㧯㧯

㨂㧿㧿

㧼㧤㧡

㨂㧿㧿

㧼㧤㧡

㨂㧿㧿

㧼㧤㧡

㨂㧿㧿

㧼㧤㧡

㧶

㧻

㧾㨅㧝

㧹㧾㨅㧝

㧝㧞㨂

㧠㧚㧣

㧷

㧾㧞㧥

㧜㨂㧙㧼

㧢㧢
㧚㧚
㧤㧤
㨂㨂

㧢㧤㧜

㧾㧝㧠

㧢

㧯㧯
㧝㧝
㧤㧤

㧜㧚㧝

㨡

㧯㧤㧡

㧾㧤㧣

㧝㧜㧷

㧡㧡
㧜㧜
㨂㨂

㧢㧢
㧤㧤
㧜㧜
㧼㧼

㨆㨆
㧰㧰
㧡㧡

㧝㧛㧞㨃

㧾㧝㧣㧠

㧢㧤㧜

㧷

㧾㧝㧡

㧾㧝㧢

㧟㧚㧜

㧟㧚㧜

㧯㧝㧣

㧠㧣㧜㧼

㧡㧜㨂

㧜㨂

㧾㧝㧣㧡

㧠㧣㧷

㧯㧯
㧝㧝
㧢㧢

㧟㧟
㧚㧚
㧟㧟
㧷㧷

㧾㧾
㧞㧞
㧜㧜

㧟㧟
㧟㧟
㧜㧜
㧜㧜
㧼㧼

㧡㧡
㧜㧜
㨂㨂

㧰㧰
㧝㧝
㧡㧡

㧰㧝

㧠

㧯㧤㧠

㧟㧡㨂

㧝㧡㧜

㨡

㧰㧰
㧠㧠

㧡

㧣

2. Outdoor unit

2.1. Electronic control circuit diagram

2 – 5

2.2. Printed wiring board

From 4Way Valve

From Expansion Valve

To Control Box

(Green/Yellow)

To Terminal Board(2)

(Red)

To Terminal Board(N)

(Blue)

12LRN

To Terminal Board(1)

(Brown)

From Thermistor

From Fan Motor

(R)(V)(White)

From Compressor (C)(W)(Orange)

To Reactor(Gray)

From Compressor

From Compressor (S)(U) (Red)

2 – 6

12LRN

Compressor operation

ON operation on
remote control

OFF operation on
remote control

Compressor ON

Compressor ON Compressor can

turn ON

Compressor remains OFF
for 180 seconds

[3] FUNCTION

1. Function

1.1. Restart control

Once the compressor stops operating, it will not restart for 180 sec­onds to protect the compressor.

Therefore, if the operating compressor is shut down from the remote
control and then turned back on immediately after, the compressor will
restart after a preset delay time.

(The indoor unit will restart operation immediately after the ON switch
is operated on the remote control.)

1.2. Cold air prevention control

When the air to air heat pump starts up in heating mode, the indoor
unit fan will not operate until the temperature of the indoor unit heat
exchanger reaches about 23C in order to prevent cold air from blow-
ing into the room.

Also, the indoor unit fan operates at low speed until the temperature of
the indoor unit heat exchanger reaches about 38C so that people in
the room will not feel chilly air flow.

Indoor unit heat exchanger temperature

38

23

Set fan speed

Indoor unit fan at low speed

Indoor unit fan in non-operation

1.3. Indoor unit heat exchanger freeze prevention control

If the temperature of the indoor unit heat exchanger remains below
0C for 4 consecutive minutes during cooling or dehumidifying opera­tion, the compressor operation stops temporarily in order to prevent
freezing.

When the temperature of the indoor unit heat exchanger rises to 2C
or higher after about 180 seconds, the compressor restarts and
resumes normal operation.

1.4. Outdoor unit 2-wa y valve freeze prevention control

If the temperature of the outdoor unit 2-way valve remains below 0C
for 10 consecutive minutes during cooling or dehumidifying operation,
the compressor operation stops temporarily in order to prevent freez­ing.

When the temperature of the 2-way valve rises to 10C or higher after
about 180 seconds, the compressor restarts and resumes normal
operation.

35

21

1.5. Indoor unit overheat prevention control

During heating operation, if the temperature of the indoor unit heat
exchanger exceeds the indoor unit heat exchanger overheat preven­tion temperature (about 45 to 54C) which is determined by the operat­ing frequency and operating status, the operating frequency is
decreased by about 4 to 15 Hz. Then, this operation is repeated every
60 seconds until the temperature of the indoor unit heat exchanger
drops below the overheat protection temperature.

Once the temperature of the indoor unit heat exchanger drops below
the overheat protection temperature, the operating frequency is
increased by about 4 to 10 Hz every 60 seconds until the normal oper­ation condition resumes.

If the temperature of the indoor unit heat exchanger exceeds the over­heat protection temperature for 60 seconds at minimum operating fre­quency, the compressor stops operating and then restarts after about
180 seconds, and the abovementioned control is repeated.

1.6. Outdoor unit overheat prevention control

During cooling operation, if the temperature of the outdoor unit heat
exchanger exceeds the outdoor unit heat exchanger overheat preven­tion temperature (about 55C), the operating frequency is decreased
by about 4 to 15 Hz. Then, this operation is repeated every 60 sec­onds until the temperature of the outdoor unit heat exchanger drops to
about 54C or lower.

Once the temperature of the outdoor unit heat exchanger drops to
about 54C or lower, the operating frequency is increased by about 4
to 10 Hz every 60 seconds until the normal operation condition
resumes.

If the temperature of the outdoor unit heat exchanger exceeds the out­door unit heat exchanger overheat protection temperature for (120 sec
: outdoor temperature  40C  60 sec : outdoor temperature < 40C)
at minimum operating frequency, the compressor stops operating and
then restarts after about 180 seconds, and the abovementioned con­trol is repeated.

1.7. Compressor overheat prevention contro l

If the temperature of the compressor exceeds the compressor over­heat prevention temperature (110C), the operation frequency is
decreased by about 4 to 10 Hz. Then, this operation is repeated every
60 seconds until the temperature of the compressor drops below the
overheat protection temperature (100C).

Once the temperature of the compressor drops below the overheat
protection temperature, the operating frequency is increased by about
4 to 10 Hz every 60 seconds until the normal operation condition
resumes.

If the temperature of the compressor exceeds the overheat protection
temperature (for 120 seconds in cooling operation or 60 seconds in
heating operation) at minimum operating frequency, the compressor
stops operating and then restarts after about 180 seconds, and the
abovementioned control is repeated.

1.8. Startup control

When the air to air heat pump starts in the cooling or heating mode, if
the room temperature is 2C higher than the set temperature (in cool­ing operation) or 3.5C lower (in heating operation), the air to air heat
pump operates with the operating frequency at maximum. Then, when
the set temperature is reached, the air to air heat pump operates at the
operating frequency determined by fuzzy logic calculation, then enters
the normal control mode after a while.

2 – 7

1.9. Peak control

20 min or more 6 min or more 6 min or more

Defrosting
Max. 10 min

Defrosting
Max. 10 min

Start of
heating
operation

Heating operation

Set temperature

Activation of
OFF timer

1 hour
later

Max.

1.5 hours
later

Max.
2 hours
later

Timer setting
reached

1 hour
later

Max.

1.5 hours
later

Max.
2 hours
later

Timer setting
reached

Activation of
OFF timer

Set temperature

-1

O

C

-1

O

C

-1

O

C

0.3

O

C

0.3

O

C

0.3

O

C

Cooling/dehumidifying operation

1 sec 1 sec 0.6 sec

ON

OFF

(Example) Compressor high temperature abnormality

Modes and Temperature Settings

the figures in ( ) are temperature settings

If the current flowing in the air to air heat pump exceeds the peak con­trol current the operation frequency is decreased until the current
value drops below the peak control current regardless of the frequency
control demand issued from the indoor unit based on the room temper­ature.

1.10. Outdoor unit fan delay control

The compressor stops immediately after cooling, dehumidifying or
heating operation is shut down, but the outdoor unit fan continues
operation for 50 seconds before it stops.

1.11. Defrosting

1.11.1 Reverse defrosting

The defrost operation starts when the compressor operating time
exceeds 20 minutes during heating operation, as shown below, and
the outside air temperature and the outdoor unit heat exchanger tem­perature meet certain conditions. When the defrost operation starts,
the indoor unit fan stops. The defrost operation stops by the state of
cyde temperature or the defrosting time exceeds 6 minutes.

1.12. ON timer

The ON timer can be activated by pressing the ON timer button. When
the ON timer is activated, the operation start time is adjusted based on
fuzzy logic calculations 1 hour before the set time so that the room
temperature reaches the set temperature at the set time.

12LRN

1.14. Power ON start

If a jumper cable is inserted in the location marked with HAJP on the
indoor unit control printed circuit board (control PCB), connecting the
power cord to an AC outlet starts the air to air heat pump in either cool­ing or heating mode, which is determined automatically by the room
temperature sensor.

When a circuit breaker is used to control the ON/OFF operation,
please insert a jumper as described above.

1.15. Self-diagnostic malfunction code display

1.15.1 Indoor unit

1) When a malfunction is confirmed, a flashing malfunction code num­ber is displayed to indicate the type of malfunction.

When the air to air heat pump is in non-operating condition, holding
down AUX button for more than 5 seconds activates the malfunc­tion code display function.

The operation continues only in the case of a serial open-circuit,
and the main relay turns off after 30 seconds if the open-circuit con­dition remains.

In the case of a serial short-circuit, the air to air heat pump contin­ues operating without a malfunction code display.

The malfunction information is stored in memory, and can be
recalled later and shown on display.

2) The self-diagnostic memory can be recalled and shown on the dis­play by stopping the operation and holding down AUX button for
more than 5 seconds.

3) The content of self-diagnosis (malfunction mode) is indicated by a
flashing number.

(For details, refer to the troubleshooting section.)

1.15.2 Outdoor unit

If a malfunction occurs, LED1 on the outdoor unit flashes in 0.2-sec­ond intervals as shown below.

1.13. OFF timer

The OFF timer can be activated by pressing the OFF timer button.
When the OFF timer is set, the operation stops after the set time.

When this timer is set, the compressor operating frequency lowers for
quieter operation, and the room temperature is gradually varied after
one hour (reduced 1C three times (max. 3C) in heating, or increased

0.3C three times (max. 1C) in cooling or dehumidifying operation) so
that the room temperature remains suitable for comfortable sleeping.

1.16. Information about auto mode

In the AUTO mode, the temperature setting and mode are automati­cally selected according to the room temperature and outdoor temper­ature when the unit is turned on.

During operation, if the outdoor temperature changes, the temperature
settings will automatically slide as shown in the chart.

2 – 8

12LRN

Heating operation Fan operation

24OC

Outside air temperature

0.6OC

Set temperature

Hot keep zone ٕ

When㩷heat only mode, cut the JP2 jumper

cool䋯heat mode䊶䊶䊶䊶䊶䊶JP2 connected
heat only mode 䊶䊶䊶䊶䊶䊶䊶JP2 cut

㪤㪘㪠㪥㩷㪧㪅㪮㪅㪙㪅

1.17. Difference of operation in Auto and Manual modes

In the Auto mode, the temperature setting is automatically determined based on the outside air temperature. In addition, the air to air heat pump oper­ation differs from the operation in the Manual mode as explained below.

1.17.1 Difference relating to set temperature

Auto mode Manual mode

Cooling Heating Dehumidifyin g Cooling Heating Dehumidifying

Temperature
setting
method

Automatic temperature setting based on outside air tem­perature. Can be changed within 2C using remote con­trol.

Can be changed
between 18 and 32C
using remote control.

Can be changed
between 18 and 32C
using remote control.

Automatic setting.
Can be changed
within 2C.

1.18. Dehumidifying operatio n co ntr ol

If the room temperature is 26C or higher when dehumidifying opera­tion starts, the dehumidifying operation provides a low cooling effect in
accordance with the room temperature setting automatically deter­mined based on the outside air operation. (The setting value is the
same as the set temperature for cooling operation in the auto mode.)

If the room temperature is lower than 26C when dehumidifying opera­tion starts, the dehumidifying operation minimizes the lowering of the
room temperature.

1.19. Self Clean operation

Heating or Fan operation and Cluster operation are performed simulta­neously.

The judgment of whether Heating or Fan operation is used is based on
the outside air temperature at 3 minutes after the start of internal
cleaning.

The operation stops after 40 minutes.

1.20. Plasmacluster Ion function

Plasmacluster lon generator inside the air conditioner will release pos­itive and negative plasmacluster ions into the room. Plasmacluster
ions released into the air will reduce some airborne mold.

1.21. Hot keep

If the room temperature is in the Hot keep zone during heating, the
compressor is turned off to prevent overheating.

ZONE COM-

Hot keep (When
room temperature
reaches setting tem­perature)

PRESSOR

AUTO

OFF

SOFT
LOW
HIGH

FAN

Ultra soft

(Lower than Fan

speed “soft”)

Keep the setting

1.22. Winter cool

Cooling operation is available during the winter season by the built in
winter cool function.

Lower limit of outdoor temperature range is -10C DB.

When the outside air temperature is low, the outdoor unit fan operates
at slower speed.

NOTE: Built-in protect device may work when outdoor temperature

falls below 21C DB., depending on conditions.

1.23. Auto restart

When power failure occures, after power is recovered, the unit will
automatically restart in the same setting which were active before the
power failure.

1.23.1 Operating mode (Cool, Heat, Dry)

• Temperature adjustment (within 2C range) automatic operation

• Temperature setting

• Fan setting

• Air flow direction

• Power ON/OFF

• Automatic operation mode setting

• Swing louvre

• Plasmacluster mode

1.23.2 Setting not memorized

• Timer setting

• Full power setting

• Self clean setting

1.23.3 Disabling auto restart function

By removing (cutting) jumper 8 (JP8) on the printed circuit board
(PCB), the auto restart function can be disabled.

1.24. Heat only mode.

2 – 9

12LRN

PAM drive circuit block diagram

Reactor L5

[PAM drive circuit]

+

Microcomputer (IC1)

AC

230V

Compressor

Noise

filter

AC clock
detection

circuit

DB1

IPM

DB2

Compressor

position

detector

IGBT

drive

circuit

IGBT

Overvoltage

detection

circuit

Stored energy

Reactor

L5

DB1

DB2

IGBT

IGBT ON

IGBT OFF

AC voltage waveform

AC voltage and current waveform when PAM is ON

AC current waveform

IGBT ON period

Zero-cross detection

AC voltage waveform

AC current waveform

AC voltage and current waveforms when PAM is OFF

2. Outline of PA M circuit

2.1. PAM (Pulse Amplitude Modulation)

The PAM circuit varies the compressor drive voltage and controls the rotation speed of the compressor.

The IGBT shown in the block diagram charges the energy (electromotive force) generated by the reactor to the electrolytic capacitor for the inverter
by turning ON and OFF.

When the IGBT is ON, an electric current flows to the IGBT via the reactor (L5) and diode bridge (DB2).

When the IGBT turns OFF, the energy stored while the IGBT was ON is charged to the capacitor via the diode bridge (DB1).

As such, by varying the ON/OFF duty of the IGBT, the output voltage is varied.

2.2. High power factor control circ uit

This circuit brings the operating current waveform closer to the waveform of commercial power supply voltage to maintain a high power factor.

Because of the capacitor input, when the PAM circuit is OFF, the phase of the current waveform deviates from the voltage waveform as shown below.

To prevent this deviation, a current is supplied during the periods indicated by "O" in the diagram.

To determine the length of period to supply a current, the zero-cross timing of the AC input voltage is input to the microcomputer via the clock circuit.

The power source frequency is also determined at the same time.

The IGBT turns ON after the time length determined by the zero-cross point to supply a current to the IGBT via the reactor.

This brings the current waveform closer to the voltage waveform in phase.

As described above, the ON/OFF operation of the IGBT controls the increase/decrease of the compressor power supply voltage (DC voltage) to
improve the compressor efficiency and maintain a high power factor by keeping the current phase closer to that of the supply voltage.

2 – 10

12LRN

AC voltage waveform

Clock

IGBT ON

A

BC

A

B

C

50Hz

1.2mS

2.6mS

0.25 2.3mS

R125
270K

１／２Ｗ
Ｆ

C10

C9
550uF
400V

0V

D19

(Overvoltage detection)

IC1

69

5V

550uF
400V

R126
270K

１／２Ｗ
Ｆ

R127
13K

R128
13K

50Ｖ

0.01uF

C87

DC Voltage

Ω

Ω

Ω

Ω

2.2.1 Detailed explanation of PAM drive circuit sequence

2.2.2 AC clock (zero-cross) judgment

• The clock circuit determines the time from one rising point of the clock waveform to the next rising point.

The detected clock waveform is used to judge the power source frequency (50 Hz).

• The zero-cross of the AC voltage is judged as the rising of the clock waveform, as shown in the diagram above.

2.2.3 IGBT ON start time (delay time B)

• Based on the zero-cross of the AC voltage, the IGBT turns ON after a delay time set according to the power source frequency.

2.2.4 IGBT ON time (C)

• After the above delay time, the IGBT turns ON to supply a current to the reactor.

• The ON time of the IGBT determines the amount of energy (level of DC voltage rise) supplied to the reactor.

DC voltage level in each operation mode (varies depending on external load conditions)

– Cooling operation --- 260 to 280 V

– Heating operation --- 260 to 290 V

2.3. PAM protection circuit

To prevent excessive voltage of PAM output from damaging the IPM and electrolytic capacitor as well as the control printed circuit board (PCB), this
circuit monitors the PAM output voltage and turns off the PAM control signal and PAM drive immediately when an abnormal voltage output is gener­ated. At the same time, it shuts off the compressor operation.

The protection voltage level is as follows.

2.3.1 Details of troubleshooting procedure for PAM

1) PAM shutdown due to error

1) When the DC voltage detection circuit sends a signal exceeding the specified voltage to the microcomputer

DC voltage of 400 V or higher (detection circuit input voltage of about 8.4 V or higher) [IC8 pin (4)]

– When an error is detected

• PAM IGBT turns OFF.

• Compressor turns OFF.

• All units shut down completely when the error occurs four times.

2) When the outdoor unit clock waveform differs from the specified value immediately before the PAM IGBT turns ON

When there is no clock waveform input

When a clock signal of other specified power source frequency (50 Hz) is input

– When an error is detected

• PAM IGBT does not turn ON.

• Compressor operates normally.

• Complete shutdown does not occur.

2 – 11

12LRN

2) PAM error indication

In case of error “1)”

– An error signal is sent to the indoor unit as soon as an error is generated.

• Malfunction No. 14-0 is indicated when the error code is called out by the indoor unit's self-diagnosis function.

– The LED on the outdoor unit flashes 14 times when an error is generated.

• The LED continues flashing in the 14-time cycle even after the compressor stops operating.

• The LED turns off (data is deleted from the memory) when the outdoor unit power is turned off.

In case of error “2)”

– An error signal is sent to the indoor unit as soon as an error is judged.

• Malfunction No. 14-1 is indicated when the error code is called out by the indoor unit's self-diagnosis function.

– The LED on the outdoor unit flashes 14 times when an error is judged.

• The LED on the outdoor unit flashes in normal pattern when the compressor stops operating.

(Compressor OFF from remote control)

* When a user complains that the air to air heat pump does not provide sufficient cool air or warm air

In addition to conventional error-generating reasons, there is a possibility that the PAM IGBT does not turn ON even if the compressor is operating.

In that case, the DC voltage does not rise even though the compressor is operating.

– Check items

• Clock circuit check

• PAM IGBT check

• Fuse (Fu6) open-circuit check

2 – 12

12LRN

P(Vcc)

U,V,W,

V

D

V

DB

V

CIN(n

)

N-side
IGBT

N(GND)

Bootstrap capacitor

High-voltage-withstanding,
high-speed recovery diode

LVIC

(LU,LV,LW)

HVIC

(HU,HV,HW)

Bootstrap circuit

Initial charge period

Charging current group

3. Explanation of IPM drive circuit

The IPM for compressor drive is made by Mitsubishi Electric.

The power supply for the IPM drive and the shunt resistance for overcurrent detection, are provided outside the IPM.

3.1. IPM drive power supply circuit

The power supply for the upper-phase IGBT (HU, HV, HW) drive employs a bootstrap system, and provides power to the upper-phase IC.

The 15-V power supply for the lower-phase IC is provided by the control printed circuit board (PCB).

3.1.1 Brief explanation of bootstrap system (single power drive system)

To supply power to the upper-phase IC, the microcomputer (IC1) turns ON the lower-phase IGBT (LU, LV, LW).

This results in a charging current that flows to the electrolytic capacitor of each upper-phase IC input and charges the bootstrap capacitor with a 15-V
current.

The power supply for the subsequent stages is charged while the lower-phase IGBT is ON in ordinary compressor drive control.

2 – 13

12LRN

SET

RESET

(About 20 A)

SC

SC reference voltage

Delay by CR time constant circuit

More than 20Ǵs

a1

Protection circuit status

Output current Ic (A)

Sense voltage relative
to shunt resistance

Error output Fo

(Lower phase)
Internal IGBT gate

IPM overcurren t
detectio n circuit

5V

0V

IC1

R49

Overcurrent

Shunt resistance

P

N

CiN

FO

14

15

20 ~ 25

IPM

24

20

17

3.1.2 DC overcurrent detection circuit

When a current of about 20 A or higher flows through the shunt resistance (R49) on the control printed circuit board (PCB), the voltage at this resis­tance is input to IPM CIN pin (15). Then, the gate voltage of the lower-phase IGBT (LU, LV, LW) inside the IPM turns OFF to cut off the overcurrent. At
the same time, an L output of more then 20s. is generated from IPM Fo pin (14), and this results in an L input to overcurrent detection input pin (17)
of the microcomputer (IC1) and turns OFF the PWM signal output (IC1 pins (20) through (25)) to the IGBT gate.

2 – 14

12LRN

Comparator output waveform
(Position signal waveform)

Terminal voltage waveform

Reference voltage
(1/2 of DC voltage)

Spike voltage

(cancelled)

Ჷ(

ᲢᲣ

Motor voltage

Voltage /Current
phase difference

Motor current

Concept chart of the current phase difference control

Best timing

Difference of current
and voltage peak

Efficiency

4. 120 energizing control (digital position detection control)

This control system detects the digital position detection signal and adjusts the rate of acceleration/deceleration accordingly.

The motor's induced voltage waveform is input to the comparator in the form of PWM-switched pulse waveform, and a position detection signal is
generated as a reference voltage equaling 1/2 of 280 VDC. However, since there is no induced voltage waveform when the PWM waveform is OFF,
the microcomputer performs internal processing so that detection is enabled only when it is ON. Based on the detected position signal, actual PWM
waveform output timing is determined. Since it does not use a filter circuit, the detection accuracy is high.

The microcomputer performs internal processing to cancel spike voltage during the regenerative process.

Furthermore, even if the induced voltage is low, position detection is still possible, thus allowing sensor-less operation at low rotation speed in the ini­tial stage of operation. This reduces the starting current and improves the IPM reliability.

5. 180 Energizing Control

This is the control system to moderate the speed by the current phase difference for higher efficiency and lower noise of the compressor. The current
phase difference control is the control system paid attention to the interrelation between efficiency and phase gap generated by the applied voltage of
motor and current in the coil of motor as shown in the figure below.

This control is the V/F drive system independent of the location of rotor, detecting the phase difference between driving voltage phase and line current
phase flowing in motor coil, and controls the modulation rate data to get the phase difference at the best efficiency.

2 – 15

[4] OPERATION MANUAL

VERTICAL AIR FLOW DIRECTION

1

Press the SWING button.

 The vertical louvre will swing.

2

Press the SWING button again to
stop the desired position.

In cool or dry mode, vertical louvre
is set obliquely upward to deliver cool air
to the ceiling in order to avoid direct air-

In heat mode, vertical louvre
is set downward to deliver the warm air
down to the

1

During operation, press the COAN­DA AIRFLOW button.

 The remote control will display “ ”.

TO CANCEL

Press the COANDA AIRFLOW button
again.

NOTE:

 If you want COANDA AIRFLOW operation in

FULL POWER mode, press COANDA AIR­FLOW button during FULL POWER operation.

HORIZONTAL AIR FLOW DIRECTION

CAUTION:

Never attempt to adjust the vertical lou­vre manually.

 Manual adjustment of the vertical lou-

vre can cause the unit to malfunction.

 When the vertical adjustment louvre is posi-

tioned at the lowest position in the COOL or
DRY mode for an extended period of time,
condensation may result.

1

Press the MODE button to select the
operation mode.

2

Press the ON/OFF button to start
operation.

 The red OPERATION lamp ( ) will light up.

TO TURN OFF

Press the ON/OFF button again.

 The red OPERATION lamp ( ) will turn off.

3

Press the THERMOSTAT button to
set the desired temperature.

(AUTO/DRY mode)
The temperature can be
changed up to ±2 °C the
automatically set of tem­perature.

(COOL/HEAT mode)
The temperature setting
range:18-32 °C.

4

Press the FAN button to set the
desired fan speed.

2

3

1

4

BASIC OPERATION

ADJUSTING THE AIR FLOW
DIRECTION

1
2

AUTO HEAT COOL DRY

NOTE:

AUTO MODE

In the AUTO mode, the temperature setting and mode are automatically selected according to the
room temperature and outdoor temperature when the unit is turned on.
During operation, if the outdoor temperature changes, the temperature settings will automatically
change.

DRY MODE

The fan speed is preset to AUTO and cannot be changed.

1

COANDA AIRFLOW

Louvre lever

Adjustment range

COOL and DRY modes HEAT mode

AUTO SOFT LOW HIGH

Plasmacluster ions released into the room
will reduce some airborne mold.

1

During operation, press the PLAS­MACLUSTER button.

 The remote control will display “ ”.

 The blue PLASMACLUSTER lamp will

light up.

TO CANCEL

Press the PLASMACLUSTER button
again.

 The blue PLASMACLUSTER lamp will

turn off.

NOTE:

 Use of the PLASMACLUSTER operation will

be memorized, and it will be activated the next
time you turn on the unit.

 To perform Plasmacluster operation in FAN

only mode, press the PLASMACLUSTER but­ton when the unit is not operating.
The mode symbol of the remote control will go
off and the fan speed cannot be set to AUTO.

Heating operation with 10°C set
temperature will be performed to protect
your home and furniture from frost
damage, even when you are out.

1

Press the MODE button and select
HEAT mode.

2

Press the ON/OFF button to start
HEAT operation.

3

Press the 10°C button.

 The remote control will display “ 10°C ”.

TO CANCEL

Press the 10°C button again.

NOTE:

operation will not be available with heat­ing operation automatically selected by AUTO
mode.

The air conditioner works at the maximum
power to makes the room cool or warm
rapidly.

1

During operation, press the FULL
POWER button.

 The remote control will display “ ”.
 The temperature display will go off.
 The green FULL POWER lamp (

) will

light up.

TO CANCEL

Press the FULL POWER button again.

 The green FULL POWER lamp ( ) will

turn off.

NOTE:

 The air conditioner will operate at “Extra

HIGH” fan speed for 5 minutes, and then shift
to “HIGH” fan speed.

 You can not set the temperature or fan speed

during the FULL POWER operation.

 The FULL POWER operation will be automati

­cally cancelled in one hour, and the unit will
return to the original settings. The green FULL
POWER lamp (

) on the unit will turn off.

1

FULL POWER OPERATION

SWING

CLEAN

FAN

MODE

SET/C

1h

DISPLAY

AM

PLASMACLUSTER OPERATION

10°C

OPERATION

SELF CLEAN operation will reduce the
growth mold fungus with Plasmacluster
ions and dry inside of the unit. Utilize the
operation at seasonal change over terms

.

1

Press the SELF CLEAN button when
the unit is not operating.

 The remote control will display “ ”.

 The blue PLASMACLUSTER lamp will

light up.

 The unit will stop operation after 40 minutes.

TO CANCEL

Press the SELF CLEAN button.

 The blue PLASMACLUSTER lamp will

turn off.

NOTE:

 You cannot set the temperature, fan speed, air

direction or timer setting during the SELF

CLEAN operation.

 Mold fungus already grown can not be

eliminated by this operation.

SELF CLEAN OPERATION

1

1

1

3

2

10

flow

airflow

airflow

Adjust the horizontal air flow direction
with the louver.

airflow

airflow

flow

airflow

floor.

12LRN

1h

MODE

CLEAN

FAN

SWING

SET/C

AM

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

AM

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

2 – 16

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

12LRN

TO CANCEL

Press the SET/C button.

 The orange TIMER lamp ( ) will turn off.


The current time will be displayed on the re-

mote control.

When the 1-HOUR OFF TIMER is set, the
unit will automatically turn off after 1 hour.

1

Press the

1-HOUR OFF TIMER

but-

ton.

 The remote control will displays “ ”.

 The orange TIMER lamp (

) will light up.

TO CANCEL

Press the SET/C button.

 The orange TIMER lamp ( ) will turn off.

NOTE:

 The 1-HOUR OFF TIMER has priority over

TIMER ON and TIMER OFF.

 If the 1-HOUR OFF TIMER is set while the

unit is not operating, the unit will operate at
the formerly set condition.

 The 1-HOUR OFF TIMER can be extended

for an additional hour from the point when
1-HOUR OFF TIMER button is pressed.

 If TIMER ON and/or TIMER OFF are set,

TIMER CANCEL button cancels every setting.

TIMER ON

1

Press the TIMER ON button.

 The TIMER ON indicator will blink.

2

Press the TIME ADVANCE or RE-

VERSE button to set the desired
time.

 The time can be set in 10-minute incre-

ments.

3

Press the SET/C button.

 The orange TIMER lamp ( ) will light

up.

TIMER OFF

1

Press the TIMER OFF button.

 The TIMER OFF indicator will blink.

2

Press the TIME ADVANCE or RE­VERSE button to set the desired
time.

 The time can be set in 10-minute incre-

ments.

3

Press the SET/C button.

 The orange TIMER lamp ( ) will light

up.

1
2

3

NOTE:

 When the TIMER OFF is set, the temperature

setting is automatically adjusted to prevent
the room from becoming excessively cold
or warm, for example while you sleep. (Auto
Sleep function)
COOL mode: One hour after the timer is set,
the temperature setting rises by 1 °C.
HEAT mode: One hour after the timer is set,
the temperature setting drops by 3 °C.

CANCEL

1

1-HOUR OFF TIMER

TIMER OPERATION

TO CHANGE TIME SETTING

Cancel the TIMER setting, then set it
again

TO COMBINE TIMER ON AND
TIMER OFF

Set the TIMER OFF and TIMER ON.

Example
(

Current time: 9:00 p.m.)
OFF TIMER at 11:00 p.m.
ON TIMER at 7:00 a.m.

 The arrow ( or ) between the TIMER ON

indicator and the TIMER OFF indicator shows
which timer will activate

NOTE:

 You cannot program the ON-TIMER and OFF-

TIMER to operate the unit at different tem­peratures or other settings.

 Either timer can be programmed to activate

prior the other.

NOTE:

 The unit will turn on prior to the set time to

allow the room to reach the desired tempera­ture. (Awaking function)

1

2
3

Press the DISPLAY button when the
lamps on the unit are too bright. (The red
OPERATION lamp and the orange TIMER
lamp cannot be turned off.)

1

During operation, press the DIS­PLAY button.

 The blue PLASMACLUSTER lamp and/or

the green FULL POWER lamp (

) will

turn off.

TO LIGHT UP

Press the DISPLAY button again.

DISPLAY BUTTON

1

Use this mode when the remote control is
not available.

TO TURN ON

Press the AUX button.

 The red OPERATION lamp ( ) will light and

the unit will start operating in the AUTO mode.

 The fan speed and temperature setting are

set to AUTO.

TO TURN OFF

Press the AUX button again.

 The red OPERATION lamp ( ) will turn off.

AUX

AUXILIARY MODE

first.

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

DISPLAY

1h

MODE

CLEAN

FAN

SWING

SET/C

MODE

FAN

SWING

1h

CLEAN

SET/C

DISPLAY

2 – 17

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12LRN

CHAPTER 3. FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES

Service Manual

[1] PROTECTION DEVICE FUNCTIONS AND OPERATIONS

Function Operation Self-diagnosis result

display

Description Detection period Reset condition Indoor

1 Indoor unit fan lock Operation stops if there is no input

of rotation pulse signal from indoor
unit fan motor for 1 minute.

Indoor unit fan rota­tion speed error

2 Indoor unit freeze

prevention

3 2-way valve freeze

prevention

4 Indoor unit heat

exchanger overheat
shutdown

5 Outdoor unit heat

exchanger overheat
shutdown

6 Compressor dis-

charge overheat shut­down

7 Dehumidifying opera-

tion temporary stop

8 DC overcurrent error Compressor stops if DC current of

9 AC overcurrent error Operating frequency lowers if out-

Operation stops if rotation pulse
signal from indoor unit fan indicates
abnormally low speed (about 300
rpm or slower).

Compressor stops if temperature
remains below 0C for 4 minutes.

Compressor stops if temperature of
outdoor unit 2-way valve remains
below 0C for 10 continuous min­utes during cooling or dehumidify­ing operation.
Operating frequency lowers if
indoor unit heat exchanger temper­ature exceeds overheat tempera­ture during heating operation.
Compressor stops if indoor unit
heat exchanger temperature
exceeds overheat temperature for
60 seconds at minimum frequency.
Overheat temperature setting value
indoor unit heat exchanger ther­mistor temperature: about 45 to
54C

Operation frequency lowers if out­door unit heat exchanger tempera­ture exceeds about 55C during
cooling operation.
Compressor stops if outdoor unit
heat exchanger temperature
exceeds about 55C for 120 sec­onds at minimum frequency.

Operating frequency lowers if tem­perature of compressor chamber
thermistor (TH1) falls below about
110 C.
Compressor stops if temperature of
compressor chamber thermistor
(TH1) remains at about 110C (for
120 seconds in cooling operation,
or 60 seconds in heating operation)
at minimum frequency.

Compressor stops if outside air
temperature thermistor is lower
than about 16C during dehumidify­ing operation.

about 25 A or higher flows in IPM.

door AC current exceeds peak con­trol current value. outdoor stops if
compressor AC current exceeds
peak control current value at mini­mum frequency.

When indoor unit fan is
in operation

When indoor unit fan is
in operation

When in cooling or
dehumidifying opera­tion

When in cooling or
dehumidifying opera­tion

When in heating opera­tion

When in cooling or
dehumidifying opera­tion

When compressor is in
operation

When in dehumidifying
operation

When compressor is in
operation
When compressor is in
operation

Indoor

unit error

display

Operation OFF or ON ✩2 Yes None

Operation OFF or ON ✩2 Yes None

Automatic reset when
heat exchanger tem­perature rises above
freeze prevention tem­perature (2C or
higher)
Automatic reset when
temperature of 2-way
valve rises above
10C.

Automatic reset after
safety period (180 sec).

Automatic reset after
safety period (180 sec).

Automatic reset after
safety period (180 sec).

Automatic reset when
outside air tempera­ture rises above 16C.

Operation OFF or ON Yes ✩1Yes Yes

Operation OFF or ON Yes ✩1Yes Yes

— None None

None Yes Yes

None Yes Yes

None Yes Yes

None Yes Yes

None Yes Yes

unit

Outdoor

unit

3 – 1

12LRN

Function Operation Self-diagnosis result

Description Detection period Reset condition Indoor

10 AC overcurrent error

in compressor OFF
status

11 AC maximum current

error

12 AC current defi-

ciency error

13 Thermistor installa-

tion error or 4-way
valve error

14 Compressor high

temperature error

15 Outdoor unit heat

exchanger thermistor
short-circuit error

16 Outdoor unit outside

air temperature ther­mistor short-circuit
error

17 Outdoor unit suction

thermistor short-cir­cuit error

18 Outdoor unit 2-way

valve thermistor
short-circuit error

19 Outdoor unit heat

exchanger thermistor
open-circuit error

20 Outdoor unit outside

air temperature ther­mistor open-circuit
error

21 Outdoor unit suction

thermistor open-cir­cuit error

22 Outdoor unit 2-way

valve thermistor
open-circuit error

23 Outdoor unit dis-

charge thermistor
open-circuit error

24 Serial signal error Compressor stops if outdoor unit

25 Compressor startup

error

26 Compressor rotation

error (at 120 ener­gizing)

27 Outdoor unit DC fan

error

28 PAM overvoltage

error

Indoor and outdoor units stop if out­door AC current exceeds about 3 A
while compressor is in non-opera­tion status.
Compressor stops if coutdoor AC
current exceeds 17 A.
Compressor stops if operating fre­quency is 50 Hz or higher and out­door AC current is about 2.0 A or
lower.
Compressor stops if high and low
values of temperatures detected by
outdoor unit heat exchanger ther­mistor (TH2) and 2-way valve ther­mistor (TH5) do not match
operating cycle.

Compressor stops if compressor
chamber thermistor (TH1) exceeds
about 114C, or if there is short-cir­cuit in TH1.

Compressor stops if there is short­circuit in outdoor unit heat
exchanger thermistor (TH2).

Compressor stops if there is short­circuit in outdoor unit outside air
temperature thermistor (TH3).

Compressor stops if there is short­circuit in outdoor unit suction ther­mistor (TH4).

Compressor stops if there is short­circuit in outdoor unit 2-way valve
thermistor (TH5).

Compressor stops if there is open­circuit in outdoor unit heat
exchanger thermistor (TH2).
Compressor stops if there is open­circuit in outdoor unit outside air
temperature thermistor (TH3).

Compressor stops if there is open­circuit in outdoor unit suction ther­mistor (TH4).
Compressor stops if there is open­circuit in outdoor unit 2-way valve
thermistor (TH5).

Compressor stops if there is open­circuit in outdoor unit discharge
thermistor (TH1).

cannot receive serial signal from
indoor unit for 30 seconds.
Compressor stops if compressor
fails to start up.
Compressor stops if there is no
input of position detection signal
from compressor or input is abnor­mal.
Operation stops if there is no input
of rotation pulse signal from out­door unit fan motor for 30 seconds.
Compressor stops if DC voltage is
400 V or higher.

display

Indoor

unit error

display

When compressor is in
non-operation

When compressor is in
operation
When compressor is in
operation

3 minutes after com­pressor startup

When in operation Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

At compressor startup Operation OFF or ON Yes ✩1Yes Yes

When in operation Reset after reception of

At compressor startup Operation OFF or ON Yes ✩3Yes Yes

Compressor operating
at 120 energizing

When outdoor unit fan
is in operation

When in operation Operation OFF or ON Yes ✩1Yes Yes

Replacement of defec­tive parts such as IPM

Operation OFF or ON Yes ✩1Yes Yes

Operation OFF or ON Yes ✩1Yes Yes

Operation OFF or ON Yes ✩1Yes Yes

serial signal

Operation OFF or ON Yes ✩3Yes Yes

Operation OFF or ON Yes ✩1Yes Yes

Yes ✩2Yes Yes

None None None

unit

Outdoor

unit

3 – 2

Function Operation Self-diagnosis result

Description Detection period Reset condition Indoor

29 PAM clock error When power source frequency can-

not be determined (at startup), or
when power source clock cannot
be detected for 1 continuous sec­ond (at startup).

✩1—The outdoor unit restarts four times before the indoor unit error is displayed (complete shutdown).

✩2—A single error judgment results in the display of the indoor unit error (complete shutdown).

✩3—The outdoor unit restarts eight times before the indoor unit error is displayed (complete shutdown).

At compressor startup,
when in operation

Compressor continues
operation without stop­ping.

[2] AIR TO AIR HEAT PUMP OPERATION IN THERMISTOR ERROR

1. Indoor unit

display

Indoor

unit error

display

None Yes Yes

unit

Outdoor

12LRN

unit

Item Mode Control operation When resistance

is low (tempera-

ture judged higher

Room temperature
thermistor (TH1)

Heat exchanger
thermistor (TH2)

Auto Operation mode

Cooling Frequency control Room becomes too

Dehumidifying Room temperature

Heating Frequency control Room does not

Cooling
Dehumidifying
Heating Cold air prevention Cold air prevention

judgment

memory
Frequency control

Freeze prevention Indoor unit evapo-

Cooling mode is
activated even if
room temperature
is low.

cold.

Normal operation. Room temperature

become warm.

rator may freeze.

deactivates too
soon and cold air
discharges.

than actual)

Short-circuit When resistance

is high (tempera-

ture judged lower

than actual)

Cooling mode is
activated in most
cases.

Air conditioner
operates in full
power even when
set temperature is
reached.

is stored in memory
as 31.0C, and
compressor does
not stop.

Hot keep status
results immedi­ately after opera­tion starts.
Frequency does
not increase above
30 Hz (40 Hz).
Indoor unit evapo­rator may freeze.
Compressor oper­ates at low speed
or stops, and fre­quency does not
increase.

Heating mode is
activated even if
room temperature
is high.

Room does not
become cool.

Normal operation. Room temperature

Room becomes too
warm.

Compressor stops
occasionally.
Cold air prevention
deactivates too
slow.

Open-circuit

Heating mode is
always activated.

Compressor does
not operate.

is stored in memory
as 18.5C, and
compressor does
not operate.

Air conditioner
operates in full
power even when
set temperature is
reached.

Compressor does
not operate.
Cold air prevention
does not deacti­vate, and indoor
unit fan does not
rotate.

3 – 3

12LRN

2. Outdoor unit

Item Mode Control operation When resistance

Compressor cham­ber thermistor
(TH1)

Heat exchanger
thermistor (TH2)

Outside air temper­ature thermistor
(TH3)

Suction pipe ther­mistor (TH4)

2-way valve ther­mistor (TH5)

Cooling
Dehumidifying
Heating

Cooling
Dehumidifying

Heating Expansion valve

Auto Operation mode

Cooling
Dehumidifying

Heating Rating control

Cooling
Dehumidifying

Heating Expansion valve

Cooling
Dehumidifying

Heating Operation not

Expansion valve
control and com­pressor protection

Outdoor unit heat
exchanger over­heat prevention

control
Defrosting

judgment

Operation not
affected

Defrosting

Expansion valve
control

control

Expansion valve
control

affected

is low (tempera-

ture judged higher

Compressor oper­ates, but room does
not become cool or
warm (expansion
valve is open).
Compressor oper­ates at low speed
or stops.

Defrosting opera­tion is not activated
as needed, and
frost accumulates
on outdoor unit
(expansion valve is
closed).

Cooling mode is
activated even if
room temperature
is low.
Normal operation. Outdoor unit ther-

Defrosting opera­tion is activated
unnecessarily.

Compressor oper­ates, but room does
not become cool
(expansion valve is
open).

Compressor oper­ates, but room does
not become warm
(expansion valve is
open).

Frost accumulates
on indoor unit evap­orator and room
does not become
cool (expansion
valve is closed).
Normal operation. Outdoor unit ther-

than actual)

Short-circuit When resistance

Compressor high
temperature error
indication.

Outdoor unit ther­mistor short-circuit
error indication.

Outdoor unit ther­mistor short-circuit
error indication.

Outdoor unit ther­mistor short-circuit
error indication.

mistor short-circuit
error indication.
Outdoor unit ther­mistor short-circuit
error indication.

Outdoor unit ther­mistor short-circuit
error indication.

Outdoor unit ther­mistor short-circuit
error indication.

Outdoor unit ther­mistor short-circuit
error indication.

mistor short-circuit
error indication.

is high (tempera-

ture judged lower

than actual)

Layer short-circuit
or open-circuit may
result in compres­sor in normal oper­ation.
Normal operation. Outdoor unit ther-

Defrosting opera­tion is activated
unnecessarily, and
room does not
become warm
(expansion valve is
open).

Heating mode is
activated even if
room temperature
is high.
Normal operation. Outdoor unit ther-

Defrosting opera­tion is not activated,
and frost accumu­lates on outdoor
unit.
Frost accumulates
on evaporator inlet
section, and room
does not become
cool (expansion
valve is closed).

Frost accumulates
on expansion valve
outlet section, and
room does not
become warm
(expansion valve is
closed).

Compressor oper­ates, but room does
not become cool
(expansion valve is
open).

Normal operation. Outdoor unit ther-

Open-circuit

Outdoor unit ther­mistor open-circuit
error indication.

mistor open-circuit
error indication.

Outdoor unit ther­mistor open-circuit
error indication.

Outdoor unit ther­mistor open-circuit
error indication.

mistor open-circuit
error indication.
Outdoor unit ther­mistor open-circuit
error indication.

Outdoor unit ther­mistor open-circuit
error indication.

Outdoor unit ther­mistor open-circuit
error indication.

Outdoor unit ther­mistor open-circuit
error indication.

mistor open-circuit
error indication.

3 – 4

[3] THERMISTOR TEMPERATURE CHARACTERISTICS

100

80

60

40

20

0

-10 0 10 20 30 40

Resistance

Thermistor
Room temperature

Heat exchange

Color

Yellow

Orange

Room temperature
thermistor TH1 (CN8 3 - 4 )
Heat exchange
thermistor

TH2 (CN8 1 - 2 )

Tester

Signal
TH1

TH2

Figure 1 Temperature properties of indoor thermistors

k

To measure the resistance, first remove
the soldering as shown at right.

Room temperature
thermistor TH1 (Yellow)
25ºC resistance 10 k

Heat exchange thermistor
TH2 (Orange),
25ºC resistance 4.431 k

TH1

TH2

1

2

Tester

3

4

+

-

TH2 TH5

500K

400K

300K

200K

100K

0

-20 0 20 60 80 100 120

Tester

110

Connector
CN8

Resistance at 25

52.76 k

5.8K

40K

30K

20K

0

10K

-20 0 20 6040

3.06K

4.17K

1.72K

2.28K

+

-

Tester

(In case of TH2 heat exchanger thermistor)

110

Connector
CN8

Thermistor

Compressor thermistor

Heat exchanger thermistor

Outdoor air temperature thermistor

Suction thermistor

2-way valve thermistor

No.

TH1

TH2

TH3

TH4

TH5

Connector

No. (1) - No. (2)

No. (3) - No. (4)

No. (5) - No. (6)

No. (7) - No. (8)

No. (9) - No. (10)

Color

Red

Orange

Green

Black

Yellow

TH1 Compressor thermistor

TH2 Heat exchanger thermistor
TH3 Outdoor air temperature thermistor
TH4 Suction thermistor
TH5 2-way valve thermistor

Resistance

(K )

Resistance

(K )

Temperature( )

Temperature( )

Resistance at 0

14.57 k

Resistance at 25

4.431 k

Before measuring resistance,

disconnect connectors from PWB.

1. Indoor unit thermistor temperature characteristics

12LRN

2. Outdoor unit thermistor temperature characteristics

3 – 5

12LRN

Short both pads and energize.

PWB pattern side.

[4] HOW TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY

1. Cooling in 40 Hz fixed mode

To operate the outdoor unit independently, short-circuit the sections indicated by arrows in the diagram below with an adapter, and apply 220-240
VAC between (1) and (N) on the terminal board of the outdoor unit. This allows the outdoor unit to be operated in cooling mode independently.

(Do not operate the outdoor unit in this condition for an extended period of time.)

[5] GENERAL TROUBLESHOOTING CHART

1. Indoor unit does not turn on

Main cause Inspection method Normal value/condition Remedy

Cracked PWB.
(Cracked pattern)
Open-circuit in FU1
(250 V, 3.15 A)

Check visually. There should be no cracking in

PWB or pattern.

Check melting of FU1. There should be no open-circuit. Replace PWB.

2. Indoor unit fan does not operate

Main cause Inspection method Normal value/condition Remedy

Open-circuit in heat exchanger
thermistor (TH2) (in heating opera­tion)

Disconnected heat exchanger ther­mistor (TH2) (in heating operation)

Measure thermistor resistance (dis­mount for check).

Inspect connector on PWB.
Check thermistor installation condi­tion.

CN8(1)-(2)
There should be no open-circuit or
faulty contact.
Thermistor should not be discon­nected.

3. Indoor unit fan speed does not change

Main cause Inspection method Normal value/condition Remedy

Remote control is not designed to
allow fan speed change in several
operation mode.

Check operation mode. Fan speed should change except

during dehumidifying operation,
ventilation, light dehumidifying
operation, internally normal opera­tion

4. Remote control signal is not received

Main cause Inspection method Normal value/condition Remedy

Batteries at end of service life. Measure battery voltage. 2.5 V or higher (two batteries in

series connection)

Batteries installed incorrectly. Check battery direction. As indicated on battery compart-

ment.
Lighting fixture is too close, or Fluo­rescent lamp is flickering in the
room.
Sevick light (Hitachi) is used in the
room.
Operating position/angle are inap­propriate.

Turn off light and check. Signal should be received when

light is turned off.

Check room lights. Signal may not be received some-

times due to effect of Sevick light.

Operate within range specified in
manual.

Signal should be received within

range specified in manual.

Replace PWB.

Replace thermistor.

Replace thermistor.

Install correctly.

Explain to user.

Install new batteries.

Install batteries in indicated direc­tion.
Change light position or install new
fluorescent lamp.

Replace light or change position.

Explain appropriate handling to
user.

3 – 6

Main cause Inspection method Normal value/condition Remedy

Open-circuit or short-circuit in wir­ing of light receiving section.

Light receiving unit is defective Check signal receiving circuit (mea-

Dew condensation on light receiv­ing unit.

Check if wires of light receiving
section are caught.

sure voltage between terminals 8
and 10, 9 and 10 of connector
CN17).

Check for water and rust. Signal should be received within

5. Louvers do not move

Main cause Inspection method Normal value/condition Remedy

Caught in sliding section. Operate to see if louvers are

caught in place.
Disconnected connector (CN7) on
PWB,
Contact of solder on PWB
(connector section on PWB)

Inspect connectors. Connectors or pins should not be

Check visually. There should not be solder contact. Correct contacting section.

6. There is noise in TV/radio

Main cause Inspection method Normal value/condition Remedy

Grounding wires not connected
properly.
TV/radio is placed too close to out­door unit.
Other than above. Check for radio wave interference.

Check grounding wire connections. Grounding wires should be con-

Check distance between TV/radio

and outdoor unit.

12LRN

Wires of light receiving section
should not have any damage
caused by pinching.

Tester indicator should move when
signal is received.

range specified in manual.

Louvers should operate smoothly. Remove or correct catching sec-

disconnected.

nected properly.
If TV/radio is placed too close, it
may become affected by noise.

Replace wires of light receiving
section.

Replace PWB.

Take moisture-proof measure for
lead wire outlet of light receiving
section.

tion.
Install correctly.

Connect grounding wires properly.

Move TV/radio away from outdoor
unit.

7. Malfunction occurs

Main cause Inspection method Normal value/condition Remedy

Malfunction caused by noise. Check for radio wave interference.

8. Compressor does not start

Main cause Inspection method Normal value/condition Remedy

Erroneous inter-unit connection. Check wiring between indoor and

Damaged IPM. Check IPM continuity. See [IPM check method] on page

Dried-up electrolytic capacitor. Check electrolytic capacitor. See [Inverter electrolytic capacitor

Blown outdoor unit fuse. Check 20A fuse.

Power supply voltage is too low. Measure power supply voltage dur-

Compressor lock. Supply current and touch compres-

Temp. fuse of terminal is error
EEEPROM error
AC Over current error

outdoor units.

Check 15A fuse.

ing startup.

sor cover (sound absorbing mate-

rial) to check if operation starts.

See (Diagnosis Function and dis-

play mode) on page 3-13

Terminal board 1-N: 220-240 VAC,
50 Hz
Terminal board 2: serial signal

3-10

(C9,C10) check method] on page
3-9
Fuse should not be blown. Replace fuse/diode bridge.

23010 VAC, 50 Hz Make sure that power supply volt-

Compressor should start normally. Apply external impact to compres-

Malfunction display section (0-0)
Compressor should start normally.

Correct wiring.

Replace IPM.

Replace electrolytic capacitor.

Replace fuse.
Replace outdoor unit PWB assem­bly.

age is 200 V or higher.

sor.
Replace compressor.

Replace terminal
Replace outdoor unit PWB
Replace outdoor unit PWB

3 – 7

12LRN

YES

Immediately
after startup

YES

YES

NO

NO

NO

YES

NO

Connect power cord

to AC outlet.

Normal

Using remote control,
operate air conditioner
so that compressor
starts.

Check 220-240 VAC
between (1) and (N)
on outdoor unit PWB.

Is LED1 on outdoor

unit flashing?

Compressor starts up.

Does LED1 indicate
DC overcurrent error?

Does LED1 indicate
rotation error?

Replace compressor.

Does LED1 remain lit?

Serial signal error.
Check inter-unit wiring.
Check indoor and
outdoor unit PWBs.

Replace outdoor unit
PWB.
Check compressor.
2/3-way valve closed.
Refrigerant shortage.

Replace outdoor unit PWB.

Check 320 VDC between
pins IPM (20) and (24)?

LED1 is flashing.

Replace outdoor unit PWB.

Replace expansion valve.

Disconnect (CN3) lead
wires of FAN motor.

Disconnect (CN12)
expansion valve.

Replace outdoor unit PWB.

YES

NO

YES

NO

NO

YES

YES

No

(unlit)

FUSE and+12 V, +15 V,

+18V on PWB

(LED1 is still off)

Replace outdoor unit PWB.

Replace FAN motor.

LED1 is flashing.

YES

NO

9. Operation stops after a few minutes and restarts, and this process repeats

Main cause Inspection method Normal value/condition Remedy

Dried-up electrolytic capacitor. Measure 320VDC line voltage. 300 V or higher. Replace electrolytic capacitor.
Layer short-circuit in expansion
valve coil.

CAUTION: If fuse FU1/FU4/FU5 (outdoor unit control circuit board) is blown, be careful of charging voltage in inverter electrolytic capacitor C9, C10.

To discharge stored electricity, unplug the power cord and connect the plug of a soldering iron (230VAC, 50W) between the positive and
negative terminals of inverter electrolytic capacitor C9, C10.

Measure resistance. 463 in each phase (at 20C) Replace coil.

[6] MALFUNCTION (PARTS) CHECK METHOD

1. Procedure for determining defective outdoor unit IPM/compressor

The following flow chart shows a procedure for locating the cause of a malfunction when the compressor does not start up and a DC overcurrent indi­cation error occurs.

CAUTION: Please take care for electrical shock when you work to change defective parts or disconnect wires of defective application.

The outdoor unit has energy changed for a while even after unplugging the power supply cord.

After changing the part or unit, please retry check procedure from the beginning.

3 – 8

2. Procedure for determining defective expansion valve

Measure resistance in expansion valve coil.

Insert checker shown at left into
connector (CN12) on control PWB, and
operate air conditioner.

If frost accumulates on 2-way valve after 10 to 20

minutes of cooling operation, then thermistors with

yellow and black lead wires may be defective. Check

these thermistors.

Replace thermistor assembly.

Replace control PWB.

Replace expansion

valve assembly.

NO

NO

YES

YES

Defective thermistor

Thermistors in

normal condition

Checker

LED
(red)

Connector
J.S.T. XNIRP-06V-A-S
Terminal
SXNI-001T-P0.6

4

32

1

5

6

5.6K

5.6K

5.6K

5.6K

Do LEDs on checker light in orderly
sequence
(lighting of 1 LED => lighting of 2 LEDs)

Normal resistance between red

terminal of expansion valve

lead wire and white or orange

terminal,gray terminal of

expansion valve lead wire and

yellow or blue terminal :

about 46 (at 20 )

45 B

Needle-type tester

Normal resistance value

(several M )

Value in ( ) is for digital tester.

12LRN

3. Diode bridge check method

Turn off the power and let the inverter electrolytic capacitor (C9, C10) discharge completely. Then use a tester and check continuity.

When using a digital tester, the (+) and (-) tester lead wires in the table must be reversed.

4. Inverter electrolytic capacitor (C9, C10) check method

Turn off the power, let the inverter electrolytic capacitor (C9, C10) discharge completely, and remove the capacitor from the control printed circuit
board (PWB). First, check the case for cracks, deformation and other damages. Then, using a needle-type tester, check continuity.

The tester needle should move on the scale and slowly returns to the original position. The tester needle should move in
the same way when polarities are reversed. (When measurement is taken with the polarities reversed, the tester needle
exceeds the scale range. Therefore, let the capacitor discharge before measurement.)

Determination of normal condition

3 – 9

12LRN

* 1

Check the connection of compressor lead wire on PWB.

TU : RED
TV : WHITE
TW : ORANGE

* 2

Refer to "IPM CHECK METHOD".

* 3

Check the connection of compressor terminal marking.

Refer to " DISASSEMBLING PROCEDURE OUTDOOR UNIT".

* 4

Check to make sure thermistors are installed in correct portions.

Refer to "THERMISTOR TEMPERATURE CHARACTERISTICS".

Yes

No

䌙䌥䌳

䌎䌯

䌙䌥䌳

䌎䌯

Yes

* 1

No

abnormal

lamronbalamron

* 2

abnormal

normal

normal

* 3

Yes

abnormal

No

normal edomgnilooCedomgnitaeH

4*4*

lamronbalamronba

lamronlamron

lamronbalamronba

䌎䌯

lamronlamron

START

Replace PWB.

Modify compressor terminal

marking.

Clean indoor heat exchanger.

Fix IPM PWB with screws securely.

Modify or replace termistor.

Are valves(2-way
and 3-way) close?

Does compresso

r

rotate?

Check IPM

lead wire.䋨䌕䌖䌗䋩

Check 䌉䌐䌍

short circuit.

Check compresso

r

terminal.

Does compresso

r

rotate?

Does compressor rotate

more than 30 seconds?

Is IPM PWB floating

from the heat sink?

Check the AC power
supply voltage when

compressor rotate.

(rated voltage±10%)

Cooling mode?

Check indoor

exchanger termistor and

discharge thermistor.

Check outdoor

exchanger termistor and

discharge thermistor.

Check indoor

heat exchanger.

Check outdoor

heat exchanger.

6-0 error memory is

recorded.

Check the refrigerant amount.

Check the discharge pressure.

Check the installation condition.

ReplacePWB

ReplaceCompressor

Fullyopenstop valves

Modify the connection of

compressor lead wire on PWB.

Connect stable power supply.

Clean indoor heat exchanger.

Modify or replace termistor.

5. IPM check method

Turn off the power, let the large capacity electrolytic capacitor (C10) discharge completely, and dismount the IPM. Then, using a tester, check leak
current between C and E.

When using a digital tester, the (+) and (-) tester lead wires in the table must be reversed.

Needle-type tester Normal resistance value

(-) (+)

PN

U

(several M)

V
W

6. DC Over Current Error ( 6-0 error)

Needle-type tester Normal resistance value

(-) (+)

UN
V

(several M)

W

Values in ( ) are for digital tester.

3 – 10

12LRN

[7] OUTDOOR UNIT CHECK METHOD

After repairing the outdoor unit, conduct the following inspection procedures to make sure that it has been repaired completely. Then, operate the
compressor for a final operation check.

1. Checking procedures

No. Item Check method Normal value/condition Remedy

1 Preparation Disconnect compressor cords (white,

2 Inverter DC power supply

voltage check

3 IPM circuit check Check that 3 lamps (load) light.

4 Compressor check Measure compressor coil resistance

5 Expansion valve check Measure expansion valve coil resis-

6 Final check Turn off power, and connect compres-

orange, red: 3 wires) from compressor
terminals, and connect simulated load
(lamp used as load).
Operate air conditioner in cooling or
heating test operation mode.
Measure DC voltage between IPM pins
(20) and (24).

Check position detection voltage (+15
V, 5 V) on control PWB.

(for each phase of U, V and W).
Use multi-meter or digital tester capa­ble of displaying two digits right of the
decimal point (0.01).

tance.

sor cords to compressor.
Operate air conditioner.
Measure DC voltage between IPM pins
(20) and (24).

320 VDC Replace control PWB.

Replace diode bridge.
Correct soldered section of Fasten
tabs (BT1,2,5,6,10,11, JPL1,2,5,6)
on control PWB. (Repair solder

cracks.)
Each voltage should be normal.
All 3 lamps (load) should light with

same intensity.
Resistance value at 20C --- 0.65 Correct connections at compressor

Each phase 463 (at 20C) Replace expansion valve.

Compressor should operate nor­mally.
320 VDC or higher.

Replace control PWB.

terminals.

Replace compressor.

Replace control PWB.

Replace outdoor unit thermistor.

Replace compressor (in case of

compressor lock).

3 – 11

12LRN

Does LED light?

NO

YES

NO

Does LED flash?

Normal

NO

YES

YES

NO

YES

NO

YES

Check 320VDC
between IPM pins
(20) and (24) ?

Short-circuit in DC fan motor
Short-circuit in IPM
Short-circuit in diode bridge
Blown fuse
Defective electrolytic capacitor
Wire disconnection, PWB pattern damage
Short-circuit in PAM IGBT (Q5)

Defective switching power supply circuit
Malfunction of 3-terminal regulator IC4, IC1
Short-circuit in expansion valve coil
Malfunction of transistor array IC7
Solder contact or other problems

Malfunction of 3-terminal regulator IC4, IC1

Microcomputer oscillator error
Malfunction of microcomputer reset IC
Malfunction of microcomputer

Malfunction of serial signal circuit
Check wiring between indoor and outdoor units.

Check switching
power supply
output of 12 VDC,
15 VDC ?

Check 5 VDC
output ?

Check 220-240VAC
input voltage.

2. Troubleshooting of outdoor unit electric components

3 – 12

12LRN

Terminal board

Ground

0-V line

Point (F)

Point (E)

Reactor

IPM

+

-

Compressor motor

2

AC230V

1

N

Outdoor unit circuits

M

Reason

The oscilloscope (chassis ground) has the same electric potential as the 0-V probe. The
entire electronic control section of the outdoor unit has a voltage potential difference from
the ground as shown in the above diagram. When the oscilloscope is set up, the 0-V line
and the ground voltage (ground) will be short-circuited, resulting in an excessive current
flow to cause damage to the oscilloscope or indoor electric circuits.

Do not touch the
cabinet or bring metal
parts into contact with
the cabinet.

Danger!!
Do not connect
the grounding
wire.

3. Caution in checking printed circuit boards (PWB)

3.1. Non-insulated control circuit

The GND terminals of the low-voltage circuits (control circuits for microcomputer and thermistors and drive circuits for expansion valve and relays) on
the control printed circuit board (PWB) are connected to the compressor drive power supply (320-VDC negative terminal). Therefore, exercise utmost
caution to prevent electric shock.

If a measuring instrument used for the test is grounded, its chassis (ground) has the same electric potential as the 0-V probe. Since non-insulated cir­cuits have the following voltage potential difference from the ground, connection of the grounding wire results in a short-circuit between the 0-V line
and the ground, thus allowing an excessive current to flow to the tester to cause damage.

If the sheaths of the thermistor lead wires or expansion valve lead wires inside the outdoor unit become damaged due to pinching by the front panel
or other metal parts or contacting a pipe, a high voltage can flow and destroy the circuits. To prevent these problems, carefully conduct assembly
work.

3 – 13

12LRN

ON

OFF

5-second OFF

1-second

OFF

1-second

OFF

1-second

OFF

1-second

OFF

1-second

ON

1-second

ON

1-second

ON

1-second

ON

1-second

ON

1st 2nd 3rd 4th 5th

LED1

2-time

ON

OFF

1-second

OFF

1-second

OFF

1-second

OFF

1-second

ON

1-second

ON

1-secondON1-second

ON

3-time

Normal

ON

OFF

1-second

OFF

1-second

OFF

1-second

OFF

0.5-second
ON

1-second

ON

0.5-secondON1-second
ON

2-time

ON

OFF

1-second

OFF

1-second

OFF

1-second

OFF

0.5-second
ON

1-second

ON

0.5-secondON0.5-secondON1-second
ON

3-time

[8] TROUBLESHOOTING GUIDE

1. Self-Diagnosis Function

1. Indoor unit

• To display the self-diagnosis,hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.

• The operation lamp(red),timer lamp(orange)and Plasmcluster lamp(blue)flash to indicate the information of malfuntion.

• If the power cord is unplugged or the circuit breaker is turned off,the self-diagnosis memory is lost.

AUX

Plsmaclucter lamp(blue)

Operation lamp(red)

Timer lamp(orange)

(Display of self-diagnosis result)

The operation lamp(red) and the Plasmacluster lamp(blue) flash in synchronization with the timer lamp(orange).

2. Outdoor unit

• The self-diagnosis is indicated the error information by flashing LED1 on the outdoor unit.

• The self-diagnosis of outdoor unit is displayed for about 3-10 minutes. Then, the LED1 returns to normal display.

3 – 14

<INDOOR UNIT> :1-second ON / 1-second OFF

12LRN

Problem

symptom

Normal con­dition

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor unit
operates.
Outdoor unit
does not
operate tem­porarily.

Indoor and
outdoor units
do not oper­ate.

Outdoor

unit indi-

cation

(LED1)

Normal

blinking

1-time Timer (Orange) 1 0 Outdoor unit

2-time Timer (Orange) 2 0 Cycle tem-

Timer (Orange) 0 0 Normal

Timer (Orange) 1 Outdoor temper-

Timer (Orange) 2 Suction ther-

Timer (Orange) 3 2-way valve

Timer (Orange) 1 Compressor dis-

Timer (Orange) 2 Outdoor unit heat

Timer (Orange) 3 Indoor unit heat

Timer (Orange) 4 IPM high temper-

Timer (Orange) 5 IPM high temper-

Indoor unit Malfunc-

Lamp Main Sub Main Sub

Operation (Red)
Plasmacluster

(Blue)

 Operation (Red)

Plasmacluster
(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster
(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

tion No.

Content of diagnosis Check point Action

thermistor
short-circuit

perature

Heat exchanger
thermistor short
circuit error

ature thermistor
short circuit error

mistor short cir­cuit error

thermistor short
circuit error

Compressor high
temperature
error

charge overheat.

exchanger over­heat.

exchanger over­heat.

ature error

ature error

(1) Measure the resis-

tance of the outdoor
unit thermistors.

(2) Check the lead wire

of the outdoor unit
thermistor for torn
sheath and shortcir­cuit.

(3) (1) (2):Normal (3) Replace the out-

(1) Check the outdoor

unit air outlet for
blockage.

(2) Check if the power

supply voltage is AC
230V at full power.

(3) Check the pipe con-

nections for refriger­ant leaks.

(4) Measure resistance

of the outdoor unit
compressor ther­mistor.

(5) Check the expansion

valve for proper
operation.

(Temporary stop for cycle
protection)

(Temporary stop for cycle
protection)

(Temporary stop for cycle
protection)

(Temporary stop for cycle
protection)

(1) Measure resistance

of the heat-sink ther­mistor.

(1) Replace the out-

door unit ther­mistor assembly.

(2) Replace the out-

door unit ther­mistor assembly.

door unit control
PCB assembly.

(1) Ensure unob-

structed air flow
from the outdoor
unit air outlet.

(2) Connect power

supply of proper
voltage.

(3) Charge the speci-

fied amount of
refrigerant.

(4) Replace the out-

door unit compres­sor thermistor
assembly.

(5) Replace the

expansion valve
coil, expansion
valve or outdoor
unit control PCB
assembly.

-

-

-

-

(1) Replace the out-

door unit PFCM
PWB or control
PCB assembly or
change the heat­sink thermistor.

3 – 15

12LRN

Problem

symptom

Indoor unit
operates.
Outdoor unit
does not
operate tem­porarily.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Outdoor

unit indi-

cation

(LED1)

3-time Timer (Orange) 3 0 Dry opera-

5-time Timer (Orange) 5 0 Outdoor unit

Timer (Orange) 1 Outdoor temper-

Timer (Orange) 2 Suction ther-

Timer (Orange) 3 2-way valve ther-

Timer (Orange) 4 Discharge ther-

Timer (Orange) 5 Heat sink ther-

6-time Timer (Orange) 6 0 Outdoor unit

Timer (Orange) 1 IPM pin level

7-time Timer (Orange) 7 0 Outdoor unit

Timer (Orange) 1 AC current error

Timer (Orange) 2 AC maximum

Timer (Orange) 3 AC current defi-

Indoor unit Malfunc-

Lamp Main Sub Main Sub

Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster
(Blue)

 Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

tion No.

Content of diagnosis Check point Action

tion

thermistor
open-circuit

DC Current

AC Current

Temporary stop
due to dehumidi­fying operation

Heat exchanger
thermistor open
circuit error

ature thermistor
open circuit error

mistor open cir­cuit error

mistor open cir­cuit error.

mistor open cir­cuit error

mistor open cir­cuit error

DC over current
error

error

AC over current
error

when OFF

current error

ciency error

(Temporary stop for cycle
protection)

(1) Check connector of

the outdoor unit ther­mistor for secure
installation.

(2) Measure resistance

of outdoor ther­mistors.

(3) Check the lead wires

of thermistors on the
outdoor unit control
PCB for open-circuit.

(4) (1) (2) (3):Normal (4) Replace the out-

Go to “DC Over Current Error (6-0 error)”.

(1) Check the IPM is

attached correctly to
the outdoor unit IPM
PWB.

(1) Ensure unob-

structed air flow from
the outdoor unit air
outlet.

(2) Check the outdoor

unit fan motor.

(1) IPM continuity check (1) Replace the out-

(1) Ensure unob-

structed air flow from
the outdoor unit air
outlet.

(2) Check the outdoor

unit fan motor.

(1) Replace the outdoor

unit control PCB
assembly.

(2) Charge the speci-

fied amount of refrig­erant.

(3) Correct refrigerant

clogs. (Stop valve,
pipe, expansion
valve)

(1) Correct the instal-

(2) Replace the out-

(3) Replace the out-

(1) Replace the out-

(1) Ensure unob-

(2) Check the outdoor

(1) Ensure unob-

(2) Check the outdoor

(1) Replace the out-

(2) Charge the speci-

(3) Correct refrigerant

-

lation.

door unit ther­mistor assembly.

door unit ther­mistor assembly.

door unit control
PCB assembly.

door unit IPM PWB
assembly.

structed air flow
from the outdoor
unit air outlet.

unit fan motor.

door IPM PWB

structed air flow
from the outdoor
unit air outlet.

unit fan motor.

door unit control
PCB assembly.

fied amount of
refrigerant.

clogs. (Stop valve,
pipe, expansion
valve)

3 – 16

12LRN

Problem

symptom

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Outdoor

unit indi-

cation

(LED1)

8-time Timer (Orange) 8 0 Abnormal

9-time Timer (Orange) 9 0 Cycle tem-

Timer (Orange) 4 4 way valve error

10-time Timer (Orange) 10 0 EEPROM

Timer (Orange) 1 EEPROM (out-

Timer (Orange) 2 CPU (outdoor)

Indoor unit Malfunc-

Lamp Main Sub Main Sub

 Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

tion No.

Content of diagnosis Check point Action

wire check

perature

error

Abnormal wire
check error

Thermisttor
installtion error or
4-way valve
error.

or Gas leak error

EEPROM (out­door) data error

door) data error

RAM data error

(1) Check the expansion

valve. (unit A - C)

(2) Are four expansion

valves connected by
mistake

(3) Check the wiring

between units.

(1) Check the ther-

mistor (heat
exchanger) and (2­way valve) are
installed in correct
positions.

(2) Check if the refriger-

ant volume is abnor­mally low.

(3) Check the 4-way

valve for proper
operation.

(4) No abnormalyty

found in above
inspections (1) thro­hgh (3).

(1) Check the ther-

mistor indoor/out­door exchange are
installed in correct
portions.

(2) Check if the refriger-

ant volume is abnor­mally low.

(3) Check the 4-way

valve for proper
operation.

- (1) Replace the out-

(1) Replace the out-

door control board
assembly.

(2) Reattach

(3) Check the wiring

between units.

(1) Correct the instal-

lation.

(2) Change the speci-

fied amount of
refrigerant.

(3) Replace the 4-way

valve.

(4) Replace the out-

door unit control
PCB assembly.

(1) Correct the instal-

lation.

(2) Change the speci-

fied amount of
refrigerant.

(3) Replace the 4-way

valve.

door unit control
PCB assembly.

3 – 17

12LRN

Problem

symptom

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Outdoor

unit indi-

cation

(LED1)

11- time Timer (Orange) 11 0 Outdoor unit

Timer (Orange) 1 Outdoor unit DC

Timer (Orange) 2 Outdoor unit DC

Timer (Orange) 3 Detection error of

Timer (Orange) 4 Detection error of

Timer (Orange) 5 Outdoor unit DC

12-time Timer (Orange) 12 0 Thermal

Indoor unit Malfunc-

Lamp Main Sub Main Sub

Operation (Red)

Plasmacluster
(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster
(Blue)

tion No.

Content of diagnosis Check point Action

DC fan

fuse in ter­minal board

Outdoor unit DC
fan rotation error

fan drive IC error

fan lock error

DC fan negative
rotation before
compressor is
driven

inverter current
for DC fan

fan open con­nector error

Thermal fuse
error in terminal
board (for power
supply)

(1) Check connector

CN3 of the outdoor
unit DC fan motor for
secure installation.

(2) Check the outdoor

unit fan motor for
proper rotation.

(3) Check fuse FUSE5. (3) Replace the out-

(4) Outdoor unit control

PCB

(1) Check if the fan IPM

terminal resistance
values are uniform.

(2) Outdoor unit fan

motor continuity
check.

(1) Check the outdoor

unit fan motor for
proper rotation.

(2) (1):Normal (2) Replace the out-

(1) (Temporary stop for

DC fan circuit protec­tion)

- (1) Replace the out-

(1) Check connector

CN3 of the outdoor
unit DC fan motor for
secure installation.

(2) (1):Normal (2) Replace the out-

(1) Check the thermal

fuse in terminal
board (for Power
supply)

(2) Check connector

CN5 of the outdoor
unit.

(3) (1) (2):Normal (3) Replace the out-

(1) Correct the instal-

lation.

(2) Replace the out-

door unit fan
motor.

door unit control
PCB assembly.

(4) Replace the out-

door unit control
PCB assembly.

(1) Replace the out-

door unit control
PCB assembly.

(2) Replace the out-

door unit fan.

(1) Replace the out-

door unit control
PCB assembly.

door unit fan.

-

door unit control
PCB assembly.

(1) Correct the instal-

lation.

door unit control
PCB assembly.

(1) Replace terminal

board for Power
supply

(2) Correct the instal-

lation.

door unit control
PCB assembly.

3 – 18

12LRN

Problem

symptom

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
operate.

Indoor and
outdoor units
do not oper­ate.

Indoor unit
operates.
Outdoor unit
does not
operate.

Outdoor

unit indi-

cation

(LED1)

13-time Timer (Orange) 13 0 DC com-

Timer (Orange) 1 Compressor

Timer (Orange) 2 Compressor

Timer (Orange) 3 Detection error of

14-time Timer (Orange) 14 0 Outdoor unit

Timer (Orange) 1 PAM clock error (1) Check the PAM

Timer (Orange) 2 PAM under volt-

Lighting

or OFF

Timer (Orange) 17 0 Wiring

Operation (Red)

Indoor unit Malfunc-

Lamp Main Sub Main Sub

 Operation (Red)

Plasmacluster
(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster
(Blue)

 Operation (Red)

Plasmacluster



(Blue)

 Operation (Red)

Plasmacluster



(Blue)

Plasmacluster
(Blue)

tion No.

Content of diagnosis Check point Action

pressor

PAM

between
units

Compressor
startup error

rotation error.
(at 120o energiz­ing)

rotation error
(at 180o energiz­ing)

inverter current.

PAM ov er volt­age error

age error

Serial open-cir-

cuit

(1) Check the colors

(red, white, orange)
of the compressor
cords for proper con­nection. (PWB side,
compressor side)

(2) Check if the IPM ter-

minal resistance val­ues are uniform.

(3) Check if outdoor

main relay (MRY1)
turns on and voltage
of both end of the
condenser (C10) has
become DC290­330V.

(4) (1) (2) (3) :Normal (4) Replace the com-

(1) Check the circuit of

detection of inverter
current.

(1) Check the AC power

supply voltage for
fluctuation.

(2) No abnormalyity

found in above
inspection.

clock for proper
input.

(1) Check the AC power

supply voltage for
fluctuation.

(2) No abnormalyity

found in above
inspection.

(1) Check the wires

between units.

(2) Check voltage

between N and 1 the
indoor/outdoor unit
terminal boards.

(3) Check the outdoor

unit fuse.

(4) Check 15-V,13-V

and 5-V voltages on
the PCB.
Check resistance
between IPM termi­nals.

(5) Check pins No.5 and

8 of connector CN3
of the outdoor unit
fan motor for short­circuit.

(6) Outdoor unit control

PCB.

(1) Correct the instal-

lation. (U: Red, V:
White, W: Orange)

(2) Replace the out-

door unit control
PWB assembly.

(3) Replace the out-

door unit control
PWB assembly.

pressor.

(1) Replace the out-

door unit control
PCB assembly.

(1) Correct the instal-

lation.

(2) Replace the PCB

assembly.

(1) Replace the out-

door unit control
PCB assembly.

(1) Correct the instal-

lation.

(2) Replace the PCB

assembly.

(1) Connect stable

power supply.
Correct the wiring.

(2) Replace the out-

door unit control
PCB assembly.

(3) Replace the fuse/

outdoor unit con­trol PCB assembly.

(4) Replace the out-

door unit control
PCB assembly.

(5) Replace the out-

door unit fan
motor.

(6) Replace the out-

door unit control
PCB board.

3 – 19

12LRN

Problem

symptom

Indoor unit
operates.
Outdoor unit
does not
operate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Indoor and
outdoor units
do not oper­ate.

Outdoor

unit indi-

cation

(LED1)

Lighting

or OFF

Lighting

or OFF

Normal

blinking

or OFF

Normal

blinking

or OFF

Indoor unit Malfunc-

tion No.

Lamp Main Sub Main Sub

Timer (Orange) 18 0 Wiring
Operation (Red)

Plasmacluster
(Blue)

Timer (Orange) 1 Serial erroneous
Operation (Red)

Plasmacluster



(Blue)

Timer (Orange) 19 0 Indoor unit
Operation (Red)

Plasmacluster
(Blue)

Timer (Orange) 20 0 Indoor unit
 Operation (Red)

Plasmacluster
(Blue)

Content of diagnosis Check point Action

Serial short-cir-

between

units

fan

control PCB

cuit

wiring

Indoor unit fan
error

EEPROM data
error

(1) Check the wiring

between units.

(1) Check the wiring

between units.

(1) Check the indoor fan

motor for proper
rotating operation.
(Check fan lock.)

(2) Check the lead wire

of the indoor fan
motor for open-cir­cuit.

(3) Check connector of

the indoor unit fan
motor for secure
installation.

(4) (1) (2) (3):Normal (4) Replace the indoor

(1) (EEPROM read data

error)

(1) Correct the wiring.

(1) Correct the wiring.

(1) Replace the indoor

fan motor.

(2) Replace the indoor

fan motor.

(3) Correct the instal-

lation of the indoor
fan motor connec­tor.

unit control PCB.

(1) Replace the indoor

unit control PCB.

3 – 20

Malfunction indications due to erroneous wiring during air conditioner installation

Indoor

unit

Outdoor

unit

1

N

2

1

N

2

Indoor

unit

Outdoor

unit

1

N

2

1

N

2

Indoor

unit

Outdoor

unit

1

N

2

1

N

2

Indoor

unit

Outdoor

unit

1

N

2

1

N

2

Indoor

unit

Outdoor

unit

1

N

2

1

N

2

Inter-unit wiring error mode Symptom

1 Malfunction diagnosis display “18-1”

2 Malfunction diagnosis display None

(Displays “18-0” when malfunction code is called out.)

3 Malfunction diagnosis display None

(Displays “18-0” when malfunction code is called out.)

4 Malfunction diagnosis display “18-1”

12LRN

5 Malfunction diagnosis display “18-1”

3 – 21

12LRN

s

1

4

C

2

Accumulator

3

Strainer

Expansion
valve

Heating Cooling

Outdoor unit

Condenser

Evaporator

Indoor unit

Reverse valve

Comp-

ressor

Flare coupling Flare coupling

3-way

valve

2-way

valve

Silencer

Coil

Antifreeze
pipe

Silencer

12LRN

CHAPTER 4. REFRIGERATION CYCLE

[1] FLOW FOW REFRIGERANT

Service Manual

[2] STANDARD CONDITION

* REFRIGERANT PIPE LENGTH 5m

[3] TEMPERATURE AT EACH PART AND PRESSURE IN 3-WAY VALVE

* On test run mode

Indoor side Outdoor side

Dry-bulb Temp. (C) Relative Humidity (% ) Dry-bulb Temp. (C) Relative Humidity (%)

Cooling 27 47 35 40
Heating20– 787

Model 12LR-N 9LR-N

NO. Condition Cooling Heating Cooling Heating

Temp. on (C)

Temp. on (C)

Temp. on (C)

Temp. on (C)

3-way valve pressure (MPaG) 1.05 2.14 1.04 2.23

66 63 66 65

40 2 40 2

14 22 14 23

17 6 16 6

4 – 1

[4] PERFORMANCE CURVES

700

800

900

1000

1100

20 25 30 35 40 45

Outside air temp.( C)

Input (W)

Outside air temp.䋨㷄䋩

Cooling capacity (kW)

3.2

3.4

3.6

3.8

4.0

20 25 30 35 40 45

Outside air temp. (㷄)

Input (䌗)

800

900

1000

1100

1200

-10 -5 0 5 10 15

Outside air temp.䋨㷄䋩

Heating capacity (kW)

3.0

3.5

4.0

4.5

5.0

-10 -5 0 5 10 15

400

500

600

700

800

20 25 30 35 40 45

Outside air temp.( C)

Input (W)

Outside air temp.䋨㷄䋩

Cooling capacity (kW)

2.2

2.4

2.6

2.8

3.0

20 25 30 35 40 45

Outside air temp. (㷄)

Input (䌗)

500

600

700

800

900

-10 -5 0 5 10 15

Outside air temp.䋨㷄䋩

Heating capacity (kW)

2.0

2.5

3.0

3.5

4.0

-10 -5 0 5 10 15

NOTE

1) Indoor fan speed: Hi

2) Vertical adjustment louver “45”, Horizontal adjustment louver “front”

3) Indoor air temp.: Cooling 27C, Heating 20C

4) Power source: 230V, 50Hz

5) Performance corresponding to change in outside temperature when compressor is fixed to rated operation.

1. 12LR-N

1.1. At Cooling 1.2. At Heating

12LRN

2. 9LR-N

2.1. At Cooling 2.2. At Heating

4 – 2

12LRN

12LRN

CHAPTER 5. DISASSEMBLY PROCEDURE

Be sure to disconnect the power cord from the AC power outlet before starting the disassembly procedure.

Be sure to install screws to their original positions after repairing

After the air conditioner is repaired or parts are replaced, measure insulation resistance of the equipment using an insulation resistance meter. If the
measured resistance is lower than 1 MΩ,inspect parts and repair or replace defective parts.

Service Manual

[1] INDOOR UNIT

1) Open the open panel.

2) Remove a screw fixing the cord holder.

3) Remove the cord holder.

5) Slide out the 2 air filter.

6) Pull out two hooks and remove the panel.

4) Loosen the screws on the terminal board remove the Unit-to Unit
wiring connected with board.

5 – 1

7) Remove the grill (Unhook the 3 hooks shown in the picture.)

㽲

㽳

㽲㽲

㽳㽳

fixin

g

band

12LRN

11)Cut the fixing band and remove the thermistor and earth wire.

12)Remove the screw fixing the control box cover.

8) Remove the 2 screws fixing the front panel R and front panel L.

9) Remove the front panel R.

Push the upper hook and pull the front panel R out.

10)Remove the front panel L.

Push the upper hook and pull the front panel L out.

13)Remove the 3 connectors.(FAN MOTOR, LOUVER MOTOR and
PLASMCLUSTER)

14)Unscrew the screw and remove the control box.

㽲㽲

㽳㽳

5 – 2

12LRN

filterguide C

㽲

㽳

㽲

㽳

(left side)

(right side)

Support the motor with your hand when unhooking the motor cover.

㽲

㽳

Insert the (-) screwdriver in the 2 holes to unhook the pipe holde

r

.

a) Remove the 2 screws fixing the cover L and drain cover.

cover L

drain cover

b) Lift the left side of the evaporator and pull out the pipe from the cabinet.

15)Unhook the 2 hooks and remove the filter guide C.

17)Unhook of the motor cover.

18)Slide the Cross-flow fan motor to the right and remove it.

19)Remove the pipe holder.

16)Unscrew the 2 screws and remove the drain pan assembly.

20)Remove the cycle assembly

5 – 3

[2] THE WIRE GUARD AND THE PLASM-

(left side)

(right side)

CLUSTER UNIT

1) Remove the 2 screws fixing the guard holder L and guard holder R.

12LRN

3) Rotate the guard holder L in clockwise and remove.

2) Pull the left side of wire guard forward, and the hook of the guard
holder L will be unhooked.

4) Slide the wire guard L to the left and remove.

5 – 4

12LRN

5) Pull the right side of the wire guard R, and unhook the guard holder
R.

6) Rotate the guard holder R in anticlockwise and remove.

8) Remove the 2 screw covers.

・Insert the (-) screwdriver in the 2 holes.

9) Unscrew the 2 screws.

7) Slide the wire guard R to the right and remove.

10)Disconnect the connector, and remove the plasmacluster unit.

5 – 5

[3] OUTDOOR UNIT

1) Unscrew the screw and remove the control box cover.

2) Unscrew the 2 screws on the right side of the top plate.

12LRN

4) Unscrew the screw on the right side of the front panel.

5) Unscrew the screw on the left side of the front panel.

3) Unscrew the 2 screws on the left side of the top plate, and remove
the top plate.

6) Unscrew the 4 screws on the front panel, and remove front panel.

7) Unscrew the 5 screws on the side cover R.

5 – 6

12LRN

㽲

㽳

㽴

㽵

8) Unscrew the 3 screws on the back side of the side cover R, and
remove the side cover R.

9) Unscrew the 3 screws on the side cover L, and remove the side
cover L.

12) Remove the 2 screws fixed the bulkhead plate.

13)Remove the compressor covers 1, 2, 3 and 4.

10)Remove the connectors and reactor in the control box.

11)Remove the 2 screws fixed the control box.

14)Remove the nut, and remove the terminal cover.

5 – 7

15) Remove the lead wire, the thermistor, and the cover gasket.

Red

Black

Yellow

Orange

Green

16)Remove the compressor cover.

12LRN

19)Unscrew the 2 screws and remove the motor angle.

20) *Thermistor position.

17)Remove the 5 thermistors. *

18)Remove the outdoor fan.

5 – 8

12LRN

5 – 9

PartsGuide

12LRN

PARTS GUIDE

SPLIT TYPE

AIR TO AIR HEAT PUMP

[1] INDOOR UNIT PARTS

[2] ACCESSORY PARTS

MODEL

12LR-N

09LR-N

In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified should be used.

CONTENTS

[5] OUTDOOR UNIT PARTS

[6] OTHER PARTS

[3] OTHER PARTS

[4] INDOOR PACKING PARTS

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and performance of the set.

[7] OUTDOOR PACKING PARTS

 INDEX

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

12LRN

NO. PARTS CODE

PRICE

RANK

NEW

MARK

PAR T

RANK

DESCRIPTION

1-47

1-46

1-45

1-44

1-43

1-42

1-41

1-40

1-34

1-33

1-32

1-31

1-30

1-37

1-29

1-28

1-27

1-26

1-55

1-24

1-23

1-22

1-21

1-20

1-19

1-18

1-17

1-16

1-15

1-14

1-13

1-12

1-11

1-10

1-9

1-8

1-7

1-6

1-5

1-4

1-2

1-1

5-15

5-14

5-10

5-11

5-7

5-4

5-2

6-3

1-3

6-2

6-1

1-13-1

1-25

9-11

1-39

1-38

1-48

1-50

1-49

1-51

5-9

5-12

1-56

5-12

1-54

1-35

[1] INDOOR UNIT PARTS

[1] INDOOR UNIT PARTS

1-1 DCOV-A354JBKZ AH N DRAIN COVER K
1-2 DCOV-A334JBKZ AF N COVER-L ASS'Y
1-3 PFPFPE188JBEZ AB N INSULATOR
1-4 PGID-A180JBFA AE N GUIDE
1-5 CHLD-A139JBKZ AG N BEARING ASS'Y
1-6 DBOX-A084JBKZ AN N CONTROL BOX ASS'Y
1-7 PBOX-A551JBFA AL N CONTROL BOX
1-8 PCOV-B695JBWZ AG N CONT.BOX COVER

1-9 GBTN-A012JBFA AC N BUTTON
1-10 LHLD-A990JBFZ AD N THERMISTOR HOLDER
1-11 PCOV-B792JBFA AC N LED GUIDE
1-12 PDAI-A248JBWZ AH N TERMINAL BOARD
1-13 CHOS-A050JBKZ AH N DRAIN HOSE ASS'Y

1-13-1 PHOS-A062JBEZ AK N DRAIN HOSE

1-14 LPLT-A058JBPZ AC N HOSE HOLDER
1-15 DCOV-A345JBKZ AH N DRAIN COVER K
1-16 DPFT-A022JBKZ AF N DRAIN JOINT ASS'Y
1-17 DSRA-A346JBKZ BB N DRAIN PAN SUB ASS'Y
1-18 LHLD-B083JBFA AE N HOLDER
1-19 LHLD-B084JBFA AE N COVER
1-20 MARMPA070JBFA AD N ARM
1-21 MJNTPA166JBFA AD N LOUVER LINK
1-22 MLOV-A553JBFA AL N LOUVER
1-23 MLOV-A554JBFA AD N VERTICAL LOUVER
1-24 NBRG-A028JBFL AB N BEARING
1-25 NBRG-A038JBFP AB N BEARING C
1-26 PCOV-B727JBFA AC N SCREW COVER
1-27 PDAI-A249JBFA AD N LOUVER BASE
1-28 PGUMMA381JBEZ AF N DRAIN PLUG
1-29 PPACGA037JBEZ AC N O RING

2

12LRN

9-2

9-1

9-4

9-6

9-5

9-3

9-8

NO. PARTS CODE P R I C E

RANK

NEW
MARK

PART
RANK

DESCRIPTION

[1] INDOOR UNIT PARTS

1-30 GWAK-A374JBFA AN N FRONT PANEL R
1-31 HDECQA345JBEA AH N DISPLAY PANEL
1-32 PCOV-B738JBEZ AF N COVER
1-33 DCHS-A724JBKZ AY N CABINET ASS'Y
1-34 PCOV-B700JBFZ AC N COVER
1-35 PSEL-E209JBEZ AB N LED SEAL
1-37 PPLTNA128JBZZ AN N MOUNTING ANGLE
1-38 DPNL-A065JBKZ AT N PANEL ASS'Y
1-39 HBDG-A169JBEA AG N PANLEL BADGE
1-40 GWAK-A368JBFA AK N FRONT PANEL L
1-41 LHLD-A394JBFA AD N PIPE HOLDER
1-42 NFANCA132JBKZ AX N CROSS FLOW FAN
1-43 PCOV-B693JBFZ AD N PIPE HOLDER
1-44 PCOV-B697JBWZ AG N BOX COVER
1-45 PCOV-B699JBFA AH N GRILL
1-46 PFILMA260JBEA AK N AIR FILTER
1-47 PGID-A181JBFA AE N FILTER GUIDE C
1-48 GGAD-A073JBTA AP N WIRE GUARD L
1-49 GGAD-A074JBTA AP N WIRE GUARD R
1-50 LHLD-B105JBFA AC N GUARD HOLDER L
1-51 LHLD-B106JBFA AC N GUARD HOLDER R
1-54 PSHE-A321JBEZ AD N JYUKOU COVER
1-55 NBRG-A052JBFA AC BEARING
1-56 LX-BZA449JBEZ SPECIAL SCREW

5-2 DSGY-E345JBKZ BF N SERVICE PWB-K-2LRN
5-2 DSGY-E346JBKZ BF N SERVICE PWB-K-9LRN
5-4 FSGY-A893JBKZ AS DISPLAY BOARD UNIT
5-7 QTANZA054JBZZ AT N TERMINAL BOARD 3P

5-9 RH-HXA136JBZZ AM N THERMISTOR
5-10 CKITTA133AKKZ BM PLASMACLUSTER UNIT
5-11 QW-VZG333JBZZ AE N LEAD WIRE
5-12 RCORFA007JBZZ AG N FERRITE CORE
5-14 RMOT-A201JBZZ AM N LOUVER MOTOR
5-15 CMOT-A532JBKZ BK N

6-1 CCYC-C673JBKZ BU N CYCLE ASS'Y

6-2 CPIPCB494JBKZ AX N TUBE ASS'Y

6-3 PFPFPE268JBEZ AG N PIPE DAN-S
9-11 TLAB-E916JBRZ AB N ERROR CODE LABEL

FAN MOTOR SUB ASS'Y

[2] ACCESSORY PARTS

3

12LRN

NO. PARTS CODE

PRICE

RANK

NEW

MARK

PAR T

RANK

DESCRIPTION

NO. PARTS CODE

PRICE

RANK

NEW

MARK

PAR T

RANK

DESCRIPTION

8-1

8-2

8-3

8-4

[2] ACCESSORY PARTS

9-1 TINS-B280JBRZ AC N INSTALLATION MANUAL
9-2 TINSEA659JBRZ AD N OPERATION MANUAL
9-3 DHLD-A051JBKZ AF N CORD HOLDER A'SSY
9-4 CRMC-A673JBEZ BA REMOTE CONTROL
9-5 UBATUA027JBE0 AE BATTERY PACK
9-6 FFZK-A265JBKZ AK SCREWS KIT
9-8 PGUMSA420JBEZ AC N CABLE SHEET

[3] OTHER PARTS

5-8 QW-VZG335JBZZ AE N LEAD WIRE
6-2-1 PSEN-A071JBKZ AH FLARE NUT ASS'Y (3/8)
6-2-2 PSEN-A070JBKZ AL FLARE NUT ASS'Y(1/4)
6-2-3 QFS-GA078JBZZ AD FUSE(FU1) (ON PWB)
6-2-4 VHVTNR9V511-A+ AD VARISTOR(NR1) (ON PWB)
6-2-5 QW-VZG320JBZZ AH LEAD WIRE (ON DISPLAY BOARD UNIT)

9-7 TLABCC768JBRZ AC N WIRING DIAGRAM

9-13 TLAB-E917JBEZ AC N EU-ENERGY LABEL (12LR-N)
9-13 TLAB-E922JBEZ AC N EU-ENERGY LABEL (09LR-N)
9-14 TSPC-G869JBRA AD N NAME LABEL (12LR-N)
9-14 TSPC-G881JBRA AD N NAME LABEL (09LR-N)

[4] INDOOR PACKING PARTS

[4] INDOOR PACKING PARTS

8-1 SPADBA515JBEZ AG PAD L

8-2 CPADBA163JBKZ AG PAD R-K

8-3 SPAKCC901JBEZ AP N PACKING CASE (12LR-N)

8-3 SPAKCC913JBEZ AP N PACKING CASE (09LR-N)

8-4 SSAKAA168JBEZ AE BAG

4

[5] OUTDOOR UNIT PARTS

2-17

2-34

2-18

1-11

2-19

2-31

2-26

3-12

1-10

2-27

3-10

2-28

2-20

2-7-1

2-7-2

2-13

2-14

2-1

1-4

2-32

3-20

2-15

2-16

2-4

2-4

1-1

2-2

2-7

2-56

2-5

2-9

2-10

2-11

1-2-7

1-2-6

2-8

1-2

2-37

2-38

1-6

2-12

1-7

3-15

3-14

3-13

2-42

2-40

3-18

2-3

1-12

2-39-2

2-39-6

2-39-7

2-48-2

2-48-1

2-39-3

2-46-2

2-46-3

2-46-1

2-7-3

2-7-4

2-7-5

2-7-6

2-59

2-57

2-58

3-21

3-7

2-60

3-26

3-5

3-2

2-35

3-11

3-23

3-22

3-7-2

3-7-1

2-60-1

1-9

1-2-8

2-14-1

2-27-1

3-6

3-8

3-9

2-21

2-23

2-24

3-24

3-6-1

3-6-2

3-6-4

3-6-3

2-21

3-19

2-25

2-33

3-33

3-32

3-6-5

3-1

3-3

3-4

3-25

3-0

3-3-1

2-41

2-59-1

12LRN

5

12LRN

NO. PARTS CODE

PRICE

RANK

NEW

MARK

PAR T

RANK

DESCRIPTION

[5] OUTDOOR UNIT PARTS

1-1 CMOTLB427JBEZ BP FAN MOTER

1-2 DSGY-E347JBKZ BY N SERVICE PWB-K-AEX2LRN

1-2 DSGY-E348JBKZ BY N SERVICE PWB-K-AEX9LRN
1-2-6 RH-IXB019JBZZ BC N IPM
1-2-7 VHDD25XB60+-F AH DIODE BRIDGE
1-2-8 VHDD15XB60H-F AG DIODE BRIDGE

1-4 RCILZA031JBZZ BF REACTOR

1-6 QTANZA074JBZZ AS N TERMINAL BOARD

1-7 FW-VZA056JBKZ AR LEAD WIRE

1-9 RFIL-A132JBZZ AF FERRITE CORE

1-10 RNF--A001VBE0 AF FERRITE CORE
1-11 RH-HXA154JBZZ AA THERMISTOR
1-12 LX-BZA075JBE0 AA SPECIAL SCREW

2-1 LANGKA263JBPZ AQ MOTOR ANGLE

2-2 CCAB-A542JBKZ AV N TOP PLATE ASS'Y

2-3 TLABCC769JBRZ AC N WIRING DIAGRAM

2-4 LX-BZA355JBEZ AE SPECIAL SCREW

2-5 LX-NZA312JBEZ AD SPECIAL NUT

2-7 CFTA-A268JBKZ AN COVER
2-7-1 PCOV-A594JBPZ AE TERMINAL COVER
2-7-2 PFTA-A090JBFA AL COVER
2-7-3 PSEL-C025JBEZ AE SEALNET SEAL
2-7-4 PSEL-C225JBEZ AB SEAL
2-7-5 PSEL-C116JBEZ AC CONDENSER SEAL
2-7-6 PSEL-C157JBEZ AF SEAL

2-8 PRDAFA219JBEZ AS HEAT SINK

2-9 LHLD-A684JBFA AN HOLDER

2-10 LHLD-A685JBFA AF HOLDER
2-11 DBOX-A077JBWZ AT CONTROL BOX ASS'Y
2-12 PDAI-A239JBWZ AF TERMINAL HOLDER
2-13 PCOV-A595JBFZ AE COVER
2-14 PSKR-A284JBPZ AT BULKHEAD

2-14-1 PSEL-E215JBEZ AC N SEAL C

2-15 GCAB-A376JBTA BB
2-16 GGADPA014JBFA AT FAN GAURD
2-17 JHNDPA015JBFA AD HANDLE
2-18 LHLD-A874JBFZ AD THERMISTOR HOLDER
2-19 LHLD-0079SRFZ AC CORD CLAMP
2-20 LHLD-A699JBFA AF HOLDER BASE
2-21 MSPR-A195JBEZ AF THERMISTOR SPRING
2-23 MSPR-A036JBE0 AB THERMISTOR SPRING
2-24 MSPR-A026JBE0 AB SPRING
2-25 NFANPA145JBEZ AR PROPELLER FAN
2-26 PPLT-A663JBTA AL SIDE COVER R
2-27 PSPF-B004JBEZ AH COMP COVER TOP
2-27 PSPF-B204JBEZ AC N COMP COVER TOP A

2-27-1 PSPF-B205JBEZ AE N COMP COVER TOP B

2-28 PSPF-B005JBEZ AX COMPRESSOR COVER
2-28 PSPF-B203JBEZ AR N COMPRESSOR COVER
2-31 TLAB-D433JBRZ SUB LABEL
2-32 TLABBA286JBRA AK IVT LABEL
2-33 TSPC-G882JBRZ AC N NAME LABEL[09LR-N]
2-33 TSPC-G870JBRZ AC N NAME LABEL[12LR-N]
2-34 PPLT-A606JBTA AR SIDE COVER L
2-35 PSEL-E206JBEZ AF SEAL
2-37 PCOV-A997JBWZ AM COVER

2-38 PSEL-C685JBEZ AC SEAL
2-39-2 PSEL-C769JBEZ AB SEAL
2-39-3 PSEL-C684JBEZ AB SEAL
2-39-6 PSEL-C345JBEZ AL SEAL
2-39-7 PSEL-C767JBEZ AB SEAL

2-40 PSEL-C029JBEZ AC SEAL A

2-41 PSEL-C222JBEZ AB SEAL B

2-42 PSEL-C270JBEZ AC SEAL
2-46-1 PSEL-C341JBEZ AB SEAL SIDE-R
2-46-2 PSEL-C340JBEZ AN SEAL SIDE-R
2-46-2 PSEL-E213JBEZ AB N SEAL SIDE-R
2-46-3
2-48-1 PSEL-C338JBEZ AC SEAL TOP
2-48-2 PSEL-C337JBEZ AB SEAL TOP

2-59-1 PSEL-E214JBEZ AB N SEAL D

2-60-1 PSEL-E212JBEZ AB N SEAL SIDE-L B

PSEL-C339JBEZ AB SEAL SIDE-R

2-56 PSEL-E103JBEZ AE CONDENSER SEAL

2-57 PSEL-D063JBEZ AC INSULATOR

2-58 PSEL-0194SRE0 AA SEAL

2-59 PSEL-C491JBEZ AB F-PANELSEAL

2-60 PSEL-E211JBEZ AB N SEAL SIDE-L A

3-0 CCHS-B127JBKZ BD BASE PAN ASS'Y
3-1 CCHS-A931JBTA BB BASE PAN ASS'Y
3-2 DVLV-A857JBKZ AZ 3WAY VALVE UNIT
3-3 PFPFPE118JBEZ AB BASE PAN INSU. A

3-3-1 PFPFPE273JBEZ AB HEAT TUBE INSULATOR

3-4 PFPFPE119JBEZ AE BASE PAN INSU. B
3-5 DVLV-A757JBKZ AR 2WAY VALVE UNIT
3-6 CVLV-B110JBKZ BR N REVERSE VALVE ASS'Y

FRONT PANEL

6

12LRN

NO. PARTS CODE

PRICE

RANK

NEW

MARK

PAR T

RANK

DESCRIPTION

90-3

90-2

Front si

de

90-1

NO. PARTS CODE P R I C E

RANK

NEW
MARK

PART
RANK

DESCRIPTION

[5] OUTDOOR UNIT PARTS

3-6-1 DVLV-B135JBKZ BH N REVERSE VALVE ASS'Y
3-6-2 PSRN-A091JBEZ AG STRAINER
3-6-3 PFPFPE271JBEZ AT N INSULATOR
3-6-4 LBND-A014JBE0 AA WIRE FIXING BAND
3-6-5 PFPFPE275JBEA INSULATOR

3-7 DVLV-B136JBKZ BC N CONTROL VALVE ASS'Y
3-7-1 RMOTSA039JBZZ AX COIL
3-7-2 PVLVRA042JBEZ BD CONTROL VALVE

3-8 CCIL-A142JBKZ AT COIL ASS'Y

3-9 PVLVXA085JBEZ BB REVERSE VALVE

3-10 PDAI-A123JBTA AL FLARE COUPLING BASE
3-11 PGUM-A203JBEZ AD TUBE HOLDER RUBBER
3-12 DCON-A608JBKZ BX N CONDENSER ASS'Y
3-13 FCMPRA314JBKZ N COMPRESSOR ASS'Y
3-14 GLEG-A149JBEZ AD COMPRESSOR CUSHION
3-15 LX-NZA313JBEZ AE SPECIAL NUT
3-18 PCOV-A010JBE0 AF TERMINAL COVER
3-19 PSEL-A403JBE0 AB COVER GASKET
3-20 PSPF-B206JBEZ AN N COMP COVER FRONT
3-21 PSPF-B212JBEZ AM N COMP COVER REAR
3-22 CPIPCB497JBKZ AS N HEAT TUBE ASS'Y
3-23 PGUMSA415JBEZ AB DAMPER RUBBER
3-24 PGUMS0170JBE0 AE DAMPER RUBBER
3-25 PFPFPE148JBEZ AC BASE PAN INSU. C
3-26 PGUMSA386JBEZ AE DAMPER RUBBER
3-32 PFPFPE276JBEZ AD INSULA
3-33 PFPFPE277JBEZ AE INSULATOR

[6] OTHER PARTS

1-2-1 QFS-CA001JBZZ AK FUSE 20A 250V
1-2-2 QFS-GA077JBZZ AD FUSE 2A 250V
1-2-3 QFS-GA078JBZZ AD FUSE 3.15A 250V
1-2-4 QFS-CA002JBZZ AH FUSE 15A 250V

[7] OUTDOOR PACKING PARTS

[7] OUTDOOR PACKING PARTS

90-1 CPADBA048JBKZ AF TOP PAD ASS'Y
90-2 CPADBA049JBKZ AM BOTTOM PAD ASS'Y
90-3 SPAKCC914JBEZ AS N PACKING CASE [09LR-N]
90-3 SPAKCC902JBEZ AS N PACKING CASE [12LR-N]

7

12LRN

INDEX

PARTS CODE No.

[ C ]
CCAB-A542JBKZ 5-2-2 AV N
CCHS-A931JBTA 5-3-1 BB
CCHS-B127JBKZ 5-3-0 BD
CCIL-A142JBKZ 5-3-8 AT
CCYC-C673JBKZ 1-6-1 BU N
CFTA-A268JBKZ 5-2-7 AN
CHLD-A139JBKZ 1-1-5 AG N
CHOS-A050JBKZ 1-1-13 AH N
CKITTA133AKKZ 1-5-10 BM
CMOT-A532JBKZ 1-5-15 BK N
CMOTLB427JBEZ 5-1-1 BP
CPADBA048JBKZ 7-90-1 AF
CPADBA049JBKZ 7-90-2 AM
CPADBA163JBKZ 4-8-2 AG
CPIPCB494JBKZ 1-6-2 AX N
CPIPCB497JBKZ 5-3-22 AS N
CRMC-A673JBEZ 2-9-4 BA
CVLV-B110JBKZ 5-3-6 BR N

[ D ]
DBOX-A077JBWZ 5-2-11 AT
DBOX-A084JBKZ 1-1-6 AN N
DCHS-A724JBKZ 1-1-33 AY N
DCON-A608JBKZ 5-3-12 BX N
DCOV-A334JBKZ 1-1-2 AF N
DCOV-A345JBKZ 1-1-15 AH N
DCOV-A354JBKZ 1-1-1 AH N
DHLD-A051JBKZ 2-9-3 AF N
DPFT-A022JBKZ 1-1-16 AF N
DPNL-A065JBKZ 1-1-38 AT N
DSGY-E345JBKZ 1-5-2 BF N
DSGY-E346JBKZ 1-5-2 BF N
DSGY-E347JBKZ 5-1-2 BY N
DSGY-E348JBKZ 5-1-2 BY N
DSRA-A346JBKZ 1-1-17 BB N
DVLV-A757JBKZ 5-3-5 AR
DVLV-A857JBKZ 5-3-2 AZ
DVLV-B135JBKZ 5-3-6-1 BH N
DVLV-B136JBKZ 5-3-7 BC N

[ F ]
FCMPRA314JBKZ 5-3-13 N
FFZK-A265JBKZ 2-9-6 AK
FSGY-A893JBKZ 1-5-4 AS
FW-VZA056JBKZ 5-1-7 AR

[ G ]
GBTN-A012JBFA 1-1-9 AC N
GCAB-A376JBTA 5-2-15 BB
GGAD-A073JBTA 1-1-48 AP N
GGAD-A074JBTA 1-1-49 AP N
GGADPA014JBFA 5-2-16 AT
GLEG-A149JBEZ 5-3-14 AD
GWAK-A368JBFA 1-1-40 AK N
GWAK-A374JBFA 1-1-30 AN N

[ H ]
HBDG-A169JBEA 1-1-39 AG N
HDECQA345JBEA 1-1-31 AH N

[ J ]
JHNDPA015JBFA 5-2-17 AD

[ L ]
LANGKA263JBPZ 5-2-1 AQ
LBND-A014JBE0 5-3-6-4 AA
LHLD-0079SRFZ 5-2-19 AC
LHLD-A394JBFA 1-1-41 AD N
LHLD-A684JBFA 5-2-9 AN
LHLD-A685JBFA 5-2-10 AF
LHLD-A699JBFA 5-2-20 AF
LHLD-A874JBFZ 5-2-18 AD
LHLD-A990JBFZ 1-1-10 AD N
LHLD-B083JBFA 1-1-18 AE N
LHLD-B084JBFA 1-1-19 AE N
LHLD-B105JBFA 1-1-50 AC N
LHLD-B106JBFA 1-1-51 AC N
LPLT-A058JBPZ 1-1-14 AC N
LX-BZA075JBE0 5-1-12 AA
LX-BZA355JBEZ 5-2-4 AE
LX-BZA449JBEZ 1-1-56
LX-NZA312JBEZ 5-2-5 AD
LX-NZA313JBEZ 5-3-15 AE

[ M ]

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PARTS CODE No.

MARMPA070JBFA 1-1-20 AD N
MJNTPA166JBFA 1-1-21 AD N
MLOV-A553JBFA 1-1-22 AL N
MLOV-A554JBFA 1-1-23 AD N
MSPR-A026JBE0 5-2-24 AB
MSPR-A036JBE0 5-2-23 AB
MSPR-A195JBEZ 5-2-21 AF

[ N ]
NBRG-A028JBFL 1-1-24 AB N
NBRG-A038JBFP 1-1-25 AB N
NBRG-A052JBFA 1-1-55 AC
NFANCA132JBKZ 1-1-42 AX N
NFANPA145JBEZ 5-2-25 AR

[ P ]
PBOX-A551JBFA 1-1-7 AL N
PCOV-A010JBE0 5-3-18 AF
PCOV-A594JBPZ 5-2-7-1 AE
PCOV-A595JBFZ 5-2-13 AE
PCOV-A997JBWZ 5-2-37 AM
PCOV-B693JBFZ 1-1-43 AD N
PCOV-B695JBWZ 1-1-8 AG N
PCOV-B697JBWZ 1-1-44 AG N
PCOV-B699JBFA 1-1-45 AH N
PCOV-B700JBFZ 1-1-34 AC N
PCOV-B727JBFA 1-1-26 AC N
PCOV-B738JBEZ 1-1-32 AF N
PCOV-B792JBFA 1-1-11 AC N
PDAI-A123JBTA 5-3-10 AL
PDAI-A239JBWZ 5-2-12 AF
PDAI-A248JBWZ 1-1-12 AH N
PDAI-A249JBFA 1-1-27 AD N
PFILMA260JBEA 1-1-46 AK N
PFPFPE118JBEZ 5-3-3 AB
PFPFPE119JBEZ 5-3-4 AE
PFPFPE148JBEZ 5-3-25 AC
PFPFPE188JBEZ 1-1-3 AB N
PFPFPE268JBEZ 1-6-3 AG N
PFPFPE271JBEZ 5-3-6-3 AT N
PFPFPE273JBEZ 5-3-3-1 AB
PFPFPE275JBEA 5-3-6-5
PFPFPE276JBEZ 5-3-32 AD
PFPFPE277JBEZ 5-3-33 AE
PFTA-A090JBFA 5-2-7-2 AL
PGID-A180JBFA 1-1-4 AE N
PGID-A181JBFA 1-1-47 AE N
PGUM-A203JBEZ 5-3-11 AD
PGUMMA381JBEZ 1-1-28 AF N
PGUMS0170JBE0 5-3-24 AE
PGUMSA386JBEZ 5-3-26 AE
PGUMSA415JBEZ 5-3-23 AB
PGUMSA420JBEZ 2-9-8 AC N
PHOS-A062JBEZ 1-1-13-1 AK N
PPACGA037JBEZ 1-1-29 AC N
PPLT-A606JBTA 5-2-34 AR
PPLT-A663JBTA 5-2-26 AL
PPLTNA128JBZZ 1-1-37 AN N
PRDAFA219JBEZ 5-2-8 AS
PSEL-0194SRE0 5-2-58 AA
PSEL-A403JBE0 5-3-19 AB
PSEL-C025JBEZ 5-2-7-3 AE
PSEL-C029JBEZ 5-2-40 AC
PSEL-C116JBEZ 5-2-7-5 AC
PSEL-C157JBEZ 5-2-7-6 AF
PSEL-C222JBEZ 5-2-41 AB
PSEL-C225JBEZ 5-2-7-4 AB
PSEL-C270JBEZ 5-2-42 AC
PSEL-C337JBEZ 5-2-48-2 AB
PSEL-C338JBEZ 5-2-48-1 AC
PSEL-C339JBEZ 5-2-46-3 AB
PSEL-C340JBEZ 5-2-46-2 AN
PSEL-C341JBEZ 5-2-46-1 AB
PSEL-C345JBEZ 5-2-39-6 AL
PSEL-C491JBEZ 5-2-59 AB
PSEL-C684JBEZ 5-2-39-3 AB
PSEL-C685JBEZ 5-2-38 AC
PSEL-C767JBEZ 5-2-39-7 AB
PSEL-C769JBEZ 5-2-39-2 AB
PSEL-D063JBEZ 5-2-57 AC
PSEL-E103JBEZ 5-2-56 AE
PSEL-E206JBEZ 5-2-35 AF

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PRICE

PARTS CODE No.

PSEL-E209JBEZ 1-1-35 AB N
PSEL-E211JBEZ 5-2-60 AB N
PSEL-E212JBEZ 5-2-60-1 AB N
PSEL-E213JBEZ 5-2-46-2 AB N
PSEL-E214JBEZ 5-2-59-1 AB N
PSEL-E215JBEZ 5-2-14-1 AC N
PSEN-A070JBKZ 3-6-2-2 AL
PSEN-A071JBKZ 3-6-2-1 AH
PSHE-A321JBEZ 1-1-54 AD N
PSKR-A284JBPZ 5-2-14 AT
PSPF-B004JBEZ 5-2-27 AH
PSPF-B005JBEZ 5-2-28 AX
PSPF-B203JBEZ 5-2-28 AR N
PSPF-B204JBEZ 5-2-27 AC N
PSPF-B205JBEZ 5-2-27-1 AE N
PSPF-B206JBEZ 5-3-20 AN N
PSPF-B212JBEZ 5-3-21 AM N
PSRN-A091JBEZ 5-3-6-2 AG
PVLVRA042JBEZ 5-3-7-2 BD
PVLVXA085JBEZ 5-3-9 BB

[ Q ]
QFS-CA001JBZZ 6-1-2-1 AK
QFS-CA002JBZZ 6-1-2-4 AH
QFS-GA077JBZZ 6-1-2-2 AD
QFS-GA078JBZZ 3-6-2-3 AD

" 6-1-2-3 AD
QTANZA054JBZZ 1-5-7 AT N
QTANZA074JBZZ 5-1-6 AS N
QW-VZG320JBZZ 3-6-2-5 AH
QW-VZG333JBZZ 1-5-11 AE N
QW-VZG335JBZZ 3-5-8 AE N

[ R ]
RCILZA031JBZZ 5-1-4 BF
RCORFA007JBZZ 1-5-12 AG N
RFIL-A132JBZZ 5-1-9 AF
RH-HXA136JBZZ 1-5-9 AM N
RH-HXA154JBZZ 5-1-11 AA
RH-IXB019JBZZ 5-1-2-6 BC N
RMOT-A201JBZZ 1-5-14 AM N
RMOTSA039JBZZ 5-3-7-1 AX
RNF--A001VBE0 5-1-10 AF

[ S ]
SPADBA515JBEZ 4-8-1 AG
SPAKCC901JBEZ 4-8-3 AP N
SPAKCC902JBEZ 7-90-3 AS N
SPAKCC913JBEZ 4-8-3 AP N
SPAKCC914JBEZ 7-90-3 AS N
SSAKAA168JBEZ 4-8-4 AE

[ T ]
TINS-B280JBRZ 2-9-1 AC N
TINSEA659JBRZ 2-9-2 AD N
TLABBA286JBRA 5-2-32 AK
TLABCC768JBRZ 3-9-7 AC N
TLABCC769JBRZ 5-2-3 AC N
TLAB-D433JBRZ 5-2-31
TLAB-E916JBRZ 1-9-11 AB N
TLAB-E917JBEZ 3-9-13 AC N
TLAB-E922JBEZ 3-9-13 AC N
TSPC-G869JBRA 3-9-14 AD N
TSPC-G870JBRZ 5-2-33 AC N
TSPC-G881JBRA 3-9-14 AD N
TSPC-G882JBRZ 5-2-33 AC N

[ U ]
UBATUA027JBE0 2-9-5 AE

[ V ]
VHDD15XB60H-F 5-1-2-8 AG
VHDD25XB60+-F 5-1-2-7 AH
VHVTNR9V511-A+ 3-6-2-4 AD

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12LRN

9

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