Sharp AE-X26FR-N User manual

CHAPTER 1. SPECIFICATION
[1] SPECIFICATION............................................ 1-1
[2] EXTERNAL DIMENSION............................... 1-2
[3] WIRING DIAGRAM ........................................ 1-3
[4] ELECTRICAL PARTS .................................... 1-3
CHAPTER 2. EXPLAMATION 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] PROTECTION DEVICE FUNCTIONS AND
OPERATIONS................................................ 3-1
[2] AIR CONDITIONER OPERATION IN
THERMISTOR ERROR ................................. 3-3
[3] THERMISTOR TEMPERATURE CHAR-
ACTERISTICS ............................................... 3-5
[4] HOW TO OPERATE THE OUTDOOR
UNIT INDEPENDENTLY ...............................3-6
[5] GENERAL TROUBLESHOOTING CHART........3-6
[6] MALFUNCTION (PARTS) CHECK METH-
OD .................................................................3-8
[7] OUTDOOR UNIT CHECK METHOD...........3-10
[8] TROUBLESHOOTING GUIDE ....................3-13
CHAPTER 4. REFRIGERATION CYCLE
[1] FLOW FOR REFRIGERANT.........................4-1
[2] STANDARD CONDITIONS............................4-1
[3] PERFORMANCE CURVES...........................4-2
CHAPTER 5. DISASSEMBLING PROCEDURE
[1] INDOOR UNIT...............................................5-1
[2] OUTDOOR UNIT...........................................5-5
REOLACEMENT PARTS LIST
SERVICE MANUAL
CONTENTS
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.
TopPage
AYXP26FRN
SPLIT TYPE
ROOM AIR CONDITIONER
INDOOR UNIT
AY-XP26FR-N
OUTDOOR UNIT
AE-X26FR-N
MODELS
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.

AYXP26FRN
1 – 1
AYXP26FRN Service Manual
CHAPTER 1. SPECIFICATION
[1] SPECIFICATION
1. AY-XP26FR-N / AE-X26FR-N
NOTE: The conditions of star(✩) marked items sre ‘ISO151’ : 1994(E), condition T1.
MODEL INDOOR UNIT OUTDOOR UNIT
ITEMS AY-XP26FR-N AE-X26FR-N
Cooling capacity(Min. ~ Max.) kW 2.6 (0.9 - 3.0)
Heating capacity(Min. ~ Max.) kW 3.6 (0.9 - 5.0)
Moisture removal(at cooling) Liters/h
Electrical data
Phase Single
Rated frequency Hz 50
Rated voltage V 230
Rated current✩
(Min - Max.)
Cool A 3.3 (0.8 - 4.6)
Heat A 4.1 (0.7 - 6.5)
Rated input✩
(Min - Max.)
Cool W 650 (150 - 900)
Heat W 900 (130 - 1400)
Power factor✩Cool % 86
Heat % 95
Compressor Type Hermetically sealed rotary type
Model 5RS092XDF
Oil charge 320cc (RB68A or Freol Alphc 68M)
Refrigerant system Evaporator Louver Fin and Grooved tube type
Condenser Corrugate Fin and Grooved tube type
Control Expansion valve
Refrigerant (R410A) 1000g
De-lce system Micro computer controled reversed systems
Noise level
(at cooling)
High dB(A) 43 48
Low dB(A) 34 -
Soft dB(A) 28 -
Fan system
Drive Direct drive
Air flow quantity
(at cooling)
High m3/min. 9.9 22
Low m3/min. 7.7 –
Soft m3/min. 6.0 –
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 φ18
Others
Safety device Compressor: Thermal protector
Fan motors: Thermal fuse
Fuse, Micro computer control
Air filters Polypropylene net (Washable)
Net dimensions Width mm 810 730
Height mm 285 540
Depth mm 240 250
Net weight kg 11 36

AYXP26FRN
1 – 2
[2] EXTERNAL DIMENSION
1. INDOOR UNIT
2. OUTDOOR UNIT
CRMC-A442JBE0
R03(AAA) 2PCS.
SHARP CORPORATION
INVERTER AIR CONDITIONER
22.0
58 18.5
175
790
240
285
810
250
165
167.5
136
81
730
72
540
299 324
515
12
37.5
4.5
58
135
14

AYXP26FRN
1 – 3
[3] WIRING DIAGRAM
1. INDOOR UNIT
2. OUTDOOR UNIT
[4] ELECTRICAL PARTS
1. INDOOR UNIT 2. OUTDOOR UNIT
N
1
N
1
2
N
1
2
WIRING DIAGRAM <CB878>
INDOOR UNIT OUTDOOR UNIT
TERMINAL BOARD1
POWER
SUPPLY
SINGLE
PHASE
GREEN-YELLOW
BLUE
BLACK
LOUVER MOTOR
(TOP)
LOUVER MOTOR
(BOTTOM)
ROOM TEMP.
THERMISTOR
PIPE TEMP.
THERMISTOR
TH1
TH2
YELLOW
ORANGE
CNA
CNB
R76
IN OUT
S
N
BLUE
BLACK
RED
NF1 DB1
C14A
FU1
250V
3.15A
FU2
250V
2A
NR1
SSR
RY1
C23
NF2
C28
CN5 C98
C99
CN1
C97
C96
FAN MOTOR
TERMINAL BOARD 2 TERMINAL BOARD
CLUSTER
GENERATOR
POWER
SUPPLY UNIT
CN2
CN3
BCN1
BCN3
BCN201 CN102
BCN101
CN101
DISPLAY
BOARD
UNIT
RECEIVER
BOARD
UNIT
CONTROL BOARD UNIT
SERIAL
SIGNAL
CIRCUIT
EVAPORATOR
LED INDICATION FOR SELF-DIAGNOSIS
Abnormal contents
Temperature
Indicator
Blinking No.
1
2
5
6
7
9
11
13
14
17
18
Short circuit of the Thermistor
Overheat error (compressor and cycle)
Open circuit of the Thermistor
Abnormal DC current
Abnormal AC current
Abnormal outdoor fan motor
Abnormal Thermistor or four way valv
Abnormal PAM voltage and PAM clock signal
Open circuit of serial signal line
Short circuit of serial signal line
19 Abnormal fan motor of indoor unit
Rotation error of the compressor or compressor lock
<Indication of the abnormal condition>
LED indicator will blink, if the set is in abnormal condition.
DESCRIPTION MODEL REMARKS
Indoor fan motor MLB084 DC Motor
Indoor fan motor
capacitor
——
Transformer — —
FUSE1 — QFS-GA052JBZZ (250V, 3.15A)
FUSE2 — QFS-GA051JBZZ (250V, 2A)
DESCRIPTION MODEL REMARKS
Compressor 5RS092XDF D.C. brush-less motor
Outdoor fan motor ML-A902 DC Motor
Outdoor fan motor
capacitor
——
Fuse1 — QFS-CA001JBZZ(250V, 20A)
Fuse2 — QFS-GA052JBZZ(250V, 3.15A)
Fuse3 — QFS-GA051JBZZ(250V, 2A)
Fuse4 — QFS-GA064JBZZ(250V, 1A)
Fuse5, 6 — QFS-CA002JBZZ(250V, 15A)

AYXP26FRN
2 – 1
AYXP26FRN Service Manual
CHAPTER 2. EXPLAMATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGRAMS
1. Indoor unit
Louvre motor drive circuit(upper)
Louvre motor drive circuit(lower)
LED drive circuit
Flow direction control (louver motor upper)
Flow direction control (louver motor lower)
LED display
AC power
Rectification circuit
CPU
Sub
CPU
3.15A
Fuse
Serial signals
2A
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
EEPROM
Select circuit
Serial I/O circuit
Power supply relay drive circuit
Auto restart circuit
Test run circuit
Auxiliary mode
Power on circuit
Cluster generator drive circuit
Cluster generator sensor circuit
Indoor fan motor
Fan motor pulse detect
Wireless remote control operation
Audible operation confirmation
Room temp. thermistor
Heat exchanger pipe thermistor
Louvre angle, fan speed
Wireless, preheat, Model select
Indoor/outdoor control signal I/O
Outdoor unit power supply on/off control
Test run (forced operation)
Auxiliary mode button ON/OFF
Self diagnostics, fault diagnosis
Cluster generator
Unit-unit wiring
(AC power and
serial signals)

AYXP26FRN
2 – 2
2. Outdoor unit
CPU
20A
protection
Expantion valve drive circuit Expantion 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
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

AYXP26FRN
2 – 3
[2] MICROCOMPUTER CONTROL SYSTEM
1. Indoor unit
1.1. Electronic control circuit diagram

AYXP26FRN
2 – 4
1.2. Display circuit diagram
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ហᢃ᠃
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ᘙᅆؕெ
Ӗήؕெ
èƸȆǹȈȝǤȳȈǛᘙƢ
D102
LED105
LED102
LED103
LED104
D101
D103
1SS270A
1SS270A
1SS270A
e
d
b
a
1 / 2W 1 / 2W 1 / 2W
R104
1/2W
180
R103R102R101
180180180
LED109
9(H2)
7(G2)
12(F2)
5(E2)
NC
g
f
15(B1)
16(A1)
6(D2)
8(C2)
10(B1)
11(A2)
4(H1)
17(G1)
18(F1)
1(E1)
2(D1)
3(C1)
NC
f
e
d
c
b
a
e
d
c
b
a
g
B2
H2
C2
13(COM)
(COM)14
A1
G1
D1
E1
F1 B1
H1
C1
A2
G2
D2
E2
F2
SL3264
1/2W
180
R107, R108, R110, R111
1W
180
R105, R106, R109
R111 R110 R109 R108 R107 R106 R105
5V
BCN201
3 1 2
R201
47 1/2W
1
2
3
BCN101
5V
8 7 6 5 4 3 2 1
+
C202
0.1μ
50V
C201
33μ
10V
IC201
a
b
c
d
e
f g
CN102
CN101
6 9 8 7 5 4 3
11
10
2
1
SHEMATIC DRAWING OF DISPLAY
LED101

AYXP26FRN
2 – 5
1.3. Printed wiring board

AYXP26FRN
2 – 6
2. Outdoor unit
2.1. Electronic control circuit diagram
9.53KF
R84
0V
Q10
0V
15V
0.01μ
10V
47μ
6.8KJ
R85
C77
R86
C78
2A
250V
FU3
7
5
4
3 2
1
0V
CN3
0.1μ
400V
C29
0V
5V
R83
10K
RY1
1
2
3
4
5
6
0V
IC7
M
a
b
5V
10K
10K
0V
j
0V
JP1
JP2
c
JPF
0V
100μ
C94
10V
C95
0.1μ
0.1μ
10K
R37 1K
R38 1K
R36 1K
0V U
V
W
C34
C35
C36
1000P x 3
D7
D6
TR1
R29
4.7K
68
18V - P
C85
0.1μ
R82
680μ
C19
IC3
R27
1W
IC4
5V
0V
R22
25V
C20R21
22K
R24
10K
R87
150μ
C84
D14
9
35V
0V -P
35V
R93
R94
R92
D20
C98
3
2
1
R78
IC5
C33
R77
50V 1μ
R79
100
0.1μ
C32
0V
QS
T
R
Q3
R
S T
9
Q
JP10
1 2 3 4 5 6 7 8
8
5
6
11
10
7
1K
10K
9
8
Q9
0V
2.2K
R32
R31
0V
R33
IC6
8 7
5
6
1
2
4
3
CNE
5V
R30
4
3
1 2
4.7K
13V
CN12
EXPANSION
VALV COIL
MRY1
13V
C38
0.1μ
24 27
23
22
21
28
18
16 13
15
12
4
10
7
9
6
1
3
10K
R45
5V
100μ
C47
1000P
C42
C48
10V
0.1μ
0V
IPM
330μ 25V
C37
100μ
25V
C49
0.1μ
25V
C51
0.1μ
C54
100μ
25V
C53
0.1μ
0.1μ
0.1μ C55
0.1μ
C57
C45
0.1μ
C56
D9
D10
100μ
C52
D8
C50
VWFB
VUFS
VUFB
WN
VN
UN
WP
VPI
VWFS
VPI
VPI
VP
VVFS
VVFB
UP
VNC
F0
VNI
C41
1000P
1000P
C40
C43
1000P
C44
1000P
C39
1000P
1K
R46
ZD4
16V 10μ x 5
C70 ~ 74
10K x 5 R63 ~ 67
0V
0V
CN8
10
6 5 4 3 2 7 9 8
0.01μ x 5 C65 ~ 69
5V
TH2
TH3
TH4
TH5
1
330K
R100
R107
PC4
330
Q7
KRC105S
1000P
C59
1/2W
R51 ~ 53
IPM
c
6
5
8
5W
R49
2 3
TLP351
j
M
270KD
R126
255KF
250V
FU5
0.02
5V
15A
470KF x 3
CIN
CF0
26
25
31
35
150 R110
250V
FU4
1A
j
1KV
C27
220PF
C15
50V
10μ
R17
STR -L
472
IC2
1/2W 1M
1/2W 1M
1/2W 1M
1
D5
1/2W 1M 1/2W 1M 1/2W 1M
R8 R9 R10
R11 R12 R13
3.3K
R20
2SA1586G
Q1
ZD1
0V
470P
C17
R14
R18
1.5K
3300P
D4
OCP/FB
1~4
8
710 96
Source
GND
Drain
Vcc
C18
680
R16
R15
C16
D15
1.6
1.6
3
D3
R19
15V
PC3
23
4
1
0.01μ
C81
R146
100K
e
d
5V5V
FU2
R105
0V
22K
3.3K
R106
C83
1000P
0.01μ
C82
Q6
KRC102S
10V
C79
R91 R147
10K
R90
D2
1.0KF 220μ
2.2K
R111
DB2
Q5
TERMINAL BOARD
N
1
WH WH
GR
R89
0V
BLUE
BROWN
YELLOW GREEN/
T2
T1
1
2
L3 L4
13
3
4
SA1
NR1
T4
R1
1/2W
1M
275V
1μF
275V 1μF
C2
4
2
1μF 275V
CT1
T6
510K
1/4W
R88
1/4W
510K
C1 C3
OUT
IN
PTC
MRY1
GR GR
T5
DB1
18V-P
4700pF
250V
4700pF
250V
4700pF
250V
4700pF
250V
R4
3.3K
D1 0.1μ
C13
1K 2W 2W
1K 1K
2W
4700P
250V C12
+
420V 420V
+
3.15A
250V
R101
R102
R103
R104
1/2W 47K x 2
R101, 102
1W 47K x 2
R103, 104
T10 T11
PC81716NIP
5V
0V
R55
R56
R54
C60
0.1μ
25V
R99 100
0.1μ
C86
15K R112
C61
50V
330P
330P
50V
C62
R57 100
R58 100
R59 100
C63
330P
50V
12
6
7
8
9
10
0.1μ
C64
25V
11 4
3
5
IC8
KIA339
1
5V
0V
0.01μ
C97
UVN
W
5V
0V
C88
1000P
N
1K
R116
RY1
120
1/2W
0.033μ
NR2
275V
CN4
C26 R28 3
1
d e
D24
2
RED
T3
R129
10K
T12
T13
250V
20A
FU1
R34
R35
JP16
5V
5V
0.1μ
C93
100μ
10V
C30
5V
0V
JP9
JP8
JP7
32 31 30 29 28 27 26 25 24 23 22 21 20
10111213141516171819 1
2
34
5
6
89 7
52 53 54 55 56 57 58 59 60 61 62 63 64
51504948474645444342414039383736353433
P07
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
VSS
P30
(U)
P44
P45
P46
P50
P51
P52
P53
P54
P55
P56
P57
AVCC
AVR
AVSS
P60
P61
P62
P63
MD0
(B) (O)
(Y)
(W)
IC1
RST MD1 MD2 X1 X0 VSS P00 P01 P02 P03 P04 P05 P06 P31
P32 P33 P34 P35 VCC C P36 P37 P40 P41 P42 P43
(X) (V)
(Y) (W) (Z)
(U)
(V)
(W)
R133 100
R132 100
R137 100
R136 100
R135 100
R134 100
5V
5V
2.2K
R73 LED1
10K
R155 10K
R154
5V
(CN)
4
1
2 3
OSC1 4MHz
0V
10K
10K
20
JP17
N
35
VNO
20.5KF
20.5KF
20.5KF
0V
PS21563 or 21564
FU6
250V
15A
1000P
C46
0V
0V
C4A
C5A
C7A
C6A
R41 R42
R43
10
2W
2K
680P
6.8K
6.8K
270
270
15V
D11 6.8KF x 5
R68 ~ 72
R47, 48
33 x 2
1/4W
1/4W 33 x 2
R47A, 48A
5V
C
(R)
S
(C)
R
FC3 FC4
YELLOW
GREEN/
EARTH
U32
V33
W34
T7
T8
T9
N
FC1
FC2
FB
D12
D13
R61
1.8K
R60
1.8K
R62
1.8K
1.8K
R115
R114
1M
14
13
2
0V -P
D23
D22
D21
15V
0V
0.022μ
C58
ZD3
R50
1.8KF
VALV COIL 4-WAY
PC1
PC817XP3
3
1
2.7K
R75
b
R74
a
1000P
C75
0V
4.7K
5V
R76
56K
4
1
2
4
32
PC853HXP
PC2
4.64KF
R26
R23
68K
C21
0.033μ
1.65KF
R25
1.5K
150μ
10K
10K
C23
0.1μ
7805
R81
10K R144
C76
1000P
5V
Q4
23.7KF
23.7KF
R6
R7 R128
13KF
R127
13KF
P
0.33μ
C14
630V
270KD
1/2W
R125
1/2W
R2
1/2W
300KF
1/2W
R5
750μ
C10
C9
750μ
(THERMISTOR CIRCUIT)
(THERMISTOR)
(SERIAL I/O CIRCUIT)
(PAM OVER CURRENT CIRCUIT)
(EEPROM CIRCUIT)
(4 - WAY VALVE CIRCUIT)
(FAN MOTOR CIRCUIT)
(FAN MOTOR)
(RESET CIRCUIT) (SWITCHING POWER
SUPPLY CIRCUIT)
KID65004AP
PST993D
KRA106S
KRC105S
KRC105S
KRA106S
(DC OVERCURRENT CHECK CIRCUIT)
MONITOR
(FOR DEBUG)
CND
(FRASH WRITER
CONNECTOR)
(LED CIRCUIT)
DETECT CIRCUIT) (ROTOR POSITION
+
C4
C5
C7
C6
2.7kF
6.8KF
13V
0.1μ
C31
C
19.1KF
R113