Sharp AY-XPC18LR User manual

SERVICE MANUAL
AYXPC18LR
S3011AYXPC8LRT
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.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
CHAPTER 1. PRODUCT SPECIFICATIONS
[1] SPECIFICATION ...........................................1-1
[2] EXTERNAL DIMENTIONS ............................1-3
[3] WIRING DIAGRAMS .....................................1-5
[4] ELECTRICAL PARTS....................................1-5
CHAPTER 2. EXPLANATION OF CIRCUIT AND OP-
ERATION
[1] BLOCK DIAGRAMS ......................................2-1
[2] MICROCOMPUTER CONTROL SYSTEM........2-3
[3] FUNCTION ....................................................2-8
CHAPTER 3. FUNCTION AND OPERATION OF PRO-
TECTIVE PROCEDURES
[1] TROUBLESHOOTING GUIDE ......................3-1
[2] CHART ..........................................................3-2
CHAPTER 4. REFRIGERATION CYCLE
[1] REFRIGERATION CYCLE............................. 4-1
[2] PERFORMANCE CURVES ........................... 4-2
[3] REFRIGERANT PIPE INSTALLATION
WORKS ......................................................... 4-3
CHAPTER 5. DISASSEMBLING PROCEDURE
[1] INDOOR UNIT ............................................... 5-1
[2] OUTDOOR UNIT ........................................... 5-5
Parts Guide
TopPage
CONTENTS
MODELS
SPLIT TYPE
ROOM AIR CONDITIONER
INDOOR UNIT
AY-XPC18LR
AY-XP24LR
OUTDOOR UNIT
AE-X18LR
AE-X24LR

AYXPC18LR
1 – 1
AYXPC18LR ServiceManual

CHAPTER 1. PRODUCT SPECIFICATIONS
[1] SPECIFICATION
1. AY-XPC18LR – AE-X18LR
NOTE: The conditions of star”✩” marked item are based on “EN14511”.
MODEL INDOOR UNIT OUTDOOR UNIT
ITEMS AY-XPC18LR AE-X18LR
Cooling capacity (Min– Max.) kW 5.00 (1.40 - 5.70)
Heating capacity (Min–Max.) kW 5.70 (1.10 - 8.00)
Moisture removal (at cooling)✩Liters/h 1.6
Electrical data
Phase Single
Rated frequency Hz 50
Rated voltage V 220-240
Rated current ✩
(Min - Max.)
Cool A 6.6 (1.4 - 8.5 )
Heat A 6.8 (1.3 - 10.7)
Rated input ✩
(Min - Max.)
Cool W 1470 (260- 1890)
Heat W 1510 (240 - 2380)
Power factor ✩Cool % 97
Heat % 97
Compressor Type Hermetically sealed rotary type
Model C-6RVN103H0Q
Oil charge FREOALALF68SZ 600cc
Refrigerant system Evaporator Louver Fin and Grooved tube type
Condenser Corrugate Fin and Grooved tube type
Control Expansion valve
Refrigerant (R410A) 1100g
De-lce system Micro computer controled reversed systems
Noise level
( cooling)
High dB(A) 43 49
Low dB(A) 39 –
Soft dB(A) 33 –
Fan system
Drive Direct drive
Air flow quantity
(cooling)
High m3/min. 14.4 44.3
Low m3/min. 12.1 –
Soft m3/min. 9.5 –
Fan Centrifugal fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 1/2”, 1/4"
Drain piping mm O.D φ16
Others
Safety device Compressor: Thermal protector
Fan motors: Thermal fuse
Fuse, Micro computer control
Air filters Polypropylene net (Washable)
Net dimensions Width mm 1040 850
Height mm 325 710
Depth mm 222 330
Net weight kg 12 49

AYXPC18LR
1 – 2
2. AY-XP24LR / AE-X24LR
NOTE: The conditions of star”✩” marked item are based on “EN14511”.
MODEL INDOOR UNIT OUTDOOR UNIT
ITEMS AY-XP24LR AE-X24LR
Rated cooling capacity (Min– Max.) kW 7.00 (1.50- 8.00)
Rated heating capacity (Min–Max.) kW 7.50 (1.10 - 9.50)
Moisture removal (at cooling)✩Liters/h 2.6
Electrical data
Phase Single
Rated frequency Hz 50
Rated voltage V 220-240
Rated current ✩
(Min - Max.)
Cool A 9.6 (1.2 - 13.3 )
Heat A 8.9 ( 1.1 - 12.6 )
Rated input ✩
(Min - Max.)
Cool W 2160 (260- 2990)
Heat W 2015 (240 - 2830)
Power factor ✩Cool % 98
Heat % 98
Compressor Type Hermetically sealed rotary type
Model C-6RVN103H0Q
Oil charge FREOALALF68SZ 600cc
Refrigerant system Evaporator Louver Fin and Grooved tube type
Condenser Corrugate Fin and Grooved tube type
Control Expansion valve
Refrigerant (R410A) 1680g
De-lce system Micro computer controlled reversed systems
Noise level
( cooling)
High dB(A) 47 53
Low dB(A) 42 –
Soft dB(A) 35 –
Fan system
Drive Direct drive
Air flow quantity
( cooling)
High m3/min. 18.4 45.6
Low m3/min. 14.4 –
Soft m3/min. 10.7 –
Fan Centrifugal fan Propeller fan
Connections
Refrigerant coupling Flare type
Refrigerant tube size Gas, Liquid 5/8", 1/4"
Drain piping mm O.D φ16
Others
Safety device Compressor: Thermal protector
Fan motors: Thermal fuse
Fuse, Micro computer control
Air filters Polypropylene net (Washable)
Net dimensions Width mm 1040 850
Height mm 325 710
Depth mm 222 330
Net weight kg 13 53

AYXPC18LR
1 – 3
[2] EXTERNAL DIMENTIONS
1. Indoor unit
222
325
1040
Remote controller
204
57 18

AYXPC18LR
1 – 4
2. Outdoor unit
3. Installation dimension
850
141 211
557
379
395
689
21
710
144
84
920
363
330
12
50
4.5
72
880
80 137
325
50
33
137
42
1040(Unit size)
80
AJ
IF
E
H
I
E
G
F
D
D
J
E
B
A
C
Center of wall hole:
Leftward piping
Center of wall hole:
Backward piping
Outline of indoor unit

AYXPC18LR
1 – 5
[3] WIRING DIAGRAMS
1. Indoor unit
2. Outdoor unit
[4] ELECTRICAL PARTS
1. Indoor unit 2. Outdoor unit
CN7
CN㧢
CN4
(HORIZONTAL)
CN2
(E)
(N)
crN
OKR^
THERMAL
FUSE
CN10
POWER
SUPPLY
CIRCUIT
`QV
`QT `QU
MAIN CONTROL BOARD UNIT
ORANGE
YELLOW
6
5
7
BLACK
(VALVE TEMP.)
(VERTICAL) CN3
(S) RED
BROWN
BLUE
GREEN-
YELLOW
CONTROL
BOX
(L)
SUB CONTROL
BOARD UNIT
CN8
SERIAL
SIGNAL
CIRCUIT
Part Name Items Specifications
Terminal Board Rating 300V 25A
Printed Wiring Board Material Paper Base Phenolic Resin
(UL94V-0)
Fan motor Type MLB438,DC Motor
Louver Motor Rating DC12V
Type MP24GA
Part Name Items Specifications
Fuse1 Rating 250V, 20A
Fuse101 Rating 250V, 20A
Fuse3 Rating 250V, 3.15A
Fuse5 Rating 250V, 2A
Fuse6 Rating 250V,1 A
Compessor Rating DC Brush-less
Type Motor 1000W
Fan motor Type MLB078, DC Motor

AYXPC18LR
2 – 1
AYXPC18LR ServiceManual

CHAPTER 2. EXPLANATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGRAMS
1. Indoor unit
CPU
2.5A
FUSE1
DC power supply circuit
Fan motor phase control circuit
Rotation pulse input circuit
AC clock circuit
Louvre motor drive circuit
Remote controller signal reception circuit
Buzzer drive circuit
CPU reset circuit
CPU oscillator circuit
Room temp. detect circuit
Heat exchanger pipe thermo circuit
Compensation circuit/ select circuit
Compensation circuit
Switchover circuit
Serial I/O circuit
Compressor relay drive circuit
LED drive circuit
Auto restart circuit
Test run circuit
Auxiliary mode
Power on circuit
Cluster generator drive circuit
Indoor fan motor
Fan motor pulse detect
Flow direction control
Wireless remote control operation
Audible operation confirmation
Room temp. thermistor
Heat exchanger pipe thermistor
Blower temperature, fan speed, model select
Outdoor ratings
Wireless, preheat
Indoor/outdoor control signal I/O
Outdoor unit power supply on/off control
LED display
Test run (forced operation)
Auxiliary mode button ON/OFF
Self diagnostics, fault diagnosis
Cluster generator
Unit-unit wiring
(AC power and
serial signals)

AYXPC18LR
2 – 2
2. Outdoor unit
CPU
20A
protection
1A
protection
Expansion valve drive circuit Expansion valve
Suction temp. thermo. circuit Suction pipe thermistor
3.15A
protection
2A
protection
20A
protection
PFC Module Filter
circuit
Smoothing
circuit
EEPROM
AC clock circuit
DC overcurrent detection circuit
Power Supply (AC power )
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
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

AYXPC18LR
2 – 3
[2] MICROCOMPUTER CONTROL SYSTEM
1. Indoor unit

AYXPC18LR
2 – 4
Printed wiring board
TO EVAPORATOR AND TERMINAL BOARD "E"
TO TERMINAL BOARD
TOP "N"
FROM
TERMINAL BOARD TOP "I"
FROM FAN MOTOR
FROM CLUSTER GENERATOR
FROM THERMISTOR
FROM LOUVER MOTOR (HORIZONTAL)
FROM TERMINAL BOARD TOP
TO TERMINAL BOARD TOP "2"
FROM LOUVER MOTOR (VERICAL)