General ASH14L, ASH14LSBCW, AOH14LFBC, ASH18L, ASH18LSBCW Service Manual

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SPLIT TYPE ROOM AIR CONDITIONER

WALL MOUNTED

Models

Indoor unit Outdoor unit

ASH14LSBCW AOH14LFBC

ASH18LSBCW AOH18LFBC

type

CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 3

CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ERROR CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . . . 7

OUTDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . 8

DISASSEMBLY ILLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

STANDARD ACCESSORIES

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPECIFICATIONS

TYPE

INDOOR UNIT

OUTDOOR UNIT

COOLING CAPACITY

HEATING CAPACITY

(kW) 5.20

(kW)

COOL & HEAT INVERTER

ASH14LSBCW

AOH14LFBC

4.20

5.60

ELECTRICAL DATA

POWER SOURCE (V) 230

FREQUENCY (Hz)

RUNNING CURRENT

INPUT WATTS

E.E.R.

COP HEATING

MOISTURE REMOVAL

AIR CIRCULATION-Hi (m /hr)

(kW/kW)

COOLING 7.6

(A)

HEATING

COOLING 1.72

(kW)

HEATING

COOLING

( /hr)

4.9

6.4

1.11

1.45

3.78

3.86

2.1

COMPRESSOR

TYPE

DISCRIMINATION DA / 30A / F-25F

REFRIGERANT R410A (g) 1,150

Hermetic type, 4 pole, 3 phase, DC inverter motor, Rotary

ASH18LSBCW

AOH18LFBC

6.25

7.6

1.73

3.02

3.61

2.8

C 700 H700C 700 H700

FAN MOTOR

POWER SOURCE (V) 230

HI-SPEED (r.p.m.) C 1,480 H 1,480

INDOOR UNIT

OUTDOOR UNIT (r.p.m.) C 860 H 820C 820 H 750

MED-SPEED (r.p.m.) C 1,260 H 1,300

LO-SPEED (r.p.m.) C 1,040 H 1,110

QUIET (r.p.m.) C 850 H 950

DIMENSIONS

INDOOR UNIT

OUTDOOR UNIT

H x W x D (mm)

275 x 790 x 215

578 x 790 x 300

WEIGHT

INDOOR UNIT

OUTDOOR UNIT

GROSS / NET (kg)

NOISE LEVEL

INDOOR UNIT

OUTDOOR UNIT

(dB) C 45 H 43

(dB) C 49 H 49

C 44 H 43

C 48 H 48

REFRIGERANT (R410A)

FULL CHARGE AMOUNT

PIPE LENGTH

ADDITIONAL REFRIGERANT

15 m 1,150 g

20 m 1,250 g

20 g / m

12 / 9

40 / 38

2004.11.09 1

DIMENSIONS

Models : ASH14LSBCW / AOH14LFBC

ASH18LSBCW / AOH18LFBC

790

275

(unit : mm)

215

2,000

508

540

790

125

320

300

347

578

2004.10.19 2

REFRIGERANT SYSTEM DIAGRAM

Models : ASH14LSBCW / AOH14LFBC

ASH18LSBCW / AOH18LFBC

Muffler

Compressor

3-Way

valve

4-Way valve

Heat exchanger

( INDOOR )

Sub-heat

exchanger

( INDOOR )

2-Way

valve

Strainer

Expansion valve

Sub-accumulator

Cooling Heating

Heat exchanger ( OUTDOOR )

Strainer

2004.11.09 3

CIRCUIT DIAGRAM

Models : ASH14LSBCW / AOH14LFBC

AOH18LSBCW / AOH18LFBC

INDOOR UNIT

DISPLAY BOARD

CONTROL BOARD

OUTDOOR UNIT

2004.11.09 4

ERROR CONTENTS

Self-diagnosis function table (Flashing LED Display)

Applicable model : ASH18LSBCW

* Detailed Trouble Display (secondary level) can be indicated by pressing Test Operation button.

Trouble Display (primary) Detailed Trouble Display (by Test Button)

Error Operation Timer Error Operation Timer

Serial signal Normal 1 sec error blinking

Indoor unit 0.5sec 0.1sec thermistor 2 times blinking error

Serial reverse signal error at operation start up

Signal reverse signal error during operation

Serial forward signal error at operation start up

Serial forward signal error during operation

Indoor temperature thermistor open

Pipe thermistor open or short

0.1sec 0.5sec

blinking 2 times

0.1sec 0.5sec

blinking 3 times

0.1sec 0.5 sec

blinking 4 times

0.1sec 0.5sec

blinking 5 times

0.1sec 0.5sec

blinking 2 times

0.1sec 0.5sec

blinking 3 times

Detailed Error Item

When a signal is not read continuously for 10 secs from power relay ON immediately after operation starts >>Cooling 0 code transmission, automatic reset When a signal is not read for 20 secs thereafter >>Trouble display continues and power relay OFF >>Permanent stop

Normal Serial Forward Signal can not be received more than 10 secs

>>Releases when it becomes normal Normal Serial Forward Signal can not be received more than 10 secs ( after receiving effective forward transfer signal) >>Releases when it becomes normal Thermistor detection value is open when AC plug is inserted

IndoorIndoorIndoorIndoorIndoor OutdoorOutdoorOutdoor

>>Releases when value becomes normal Thermistor detection value is open or short

when AC plug is inserted

Outdoor unit 0.5sec 0.1sec thermistor 3 times blinking error

Indoor unit 0.5sec 0.1sec control error 4 times blinking

Discharge thermistor open or short

Heat exchanger thermistor open

Outdoor temperature thermistor open or short

Forced automatic SW welded

Main relay welded

Power interruption error

0.1sec 0.5sec

blinking 2 times

0.1sec 0.5sec

blinking 3 times

0.1sec 0.5sec

blinking 4 times

0.1sec 0.5sec

blinking 2 times

0.1sec 0.5sec

blinking 3 times

0.1sec 0.5sec

blinking 4 times

>>Releases when value becomes normal Thermistor detection value is open or short

>>Outdoor unit stops

Releases when it becomes normal

Thermistor detection value is open

>>Outdoor unit stops

Releases when it becomes normal

Thermistor detection value is open or short

>>Outdoor unit stops

Releases when it becomes normal Forced Auto SW is ON for more than 10 secs continuously

>>Error is indicated while it is ON Normal Operation other than error indication

Serial Reverse Signal is received 1 min. after Main relay becomes OFF

>>Error is indicated while serial reverse

signal is input on normal operation Normal operation except error indication

50/60Hz is not detected after 4 secs of power ON.

2004.10.29 5

>>Error is indicated and unit is stopped

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