Sharp R-426H Service Manual Page 141
- Page / 194
- Table of contents
- BOOKMARKS
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4. Service procedures
1
12
3
4
5
IV - 4
Power Supply: 50 Hz, 3-phase, 380-400-415 V
1
2
U1
U2
R1
R2
R3
1
2
3
1
2
3
1
2
4
L1
L2
L3
N
Indoor Unit
Inter-unit
power wiring
(Line voltage)
Inter-unit
control wiring
(Low voltage)
RED
WHT
BLK
Remote controller
Outdoor Unit
Ground
Ground
(Option)
B
D
A
0499_M_I
Power supply
R.C. Address on the PCB: 0 (S2, BLK)
(0: Factory shipped state)
380 - 415 V - 3 N 50 Hz
L1
L2
L3
N
1
2
0
C
(1)-2
Check before and after Troubleshooting (AER 425 SHL3E - AER 436 SHL3E - AER 448 SHL3E)
Many problems may happen because of wiring or power supply problems, so you should
check these areas first. Problems here can cause false results in some of the other tests,
and so should be corrected first.
11
11
1. Check power supply wiring
❑ Check that power supply wires are correctly connected to terminal No.5
through No.8 on the 8P terminal plate in the outdoor unit.
❑ Check the power supply wires are correctly connected between terminal
No.1 and 2 on the 3P terminal plate in the indoor unit and terminal No.1
and 2 on the 8P terminal plate in the outdoor unit.
22
22
2. Check inter-unit wiring
❑ Check that inter-unit control wiring (DC low voltage) is correctly connected
between the indoor unit and outdoor unit.
33
33
3. Check power supply
❑ Check that voltage is within the specified range (±10% of the rating).
❑ Check that power is being supplied.
If the following troubleshooting must be done with power being supplied,
be careful not to touch any uninsulated live part that can cause ELECTRIC
SHOCK.
44
44
4. Check the lead wires and connectors in indoor and outdoor units.
❑ Check that the sheath of lead wires is not damaged.
❑ Check that the lead wires are firmly connected at the terminal plate.
❑ Check that the wiring is correct.
Fig. 23
- TECHNICAL DATA 1
- SERVICE MANUAL 1
- Important 2
- WHO SHOULD USE THIS MANUAL 3
- TABLE OF CONTENTS 3
- Read Me First! 5
- 1-1 Unit Specifications 10
- 1-1Unit Specifications 30
- (B) Outdoor Unit 40
- Ceiling Mounted Type 47
- Concealed Duct Type 48
- Outdoor Unit 49
- 1-4 Dimensional Data 53
- 1-5 Refrigerant Flow Diagram 61
- 1-6 Operating Range 64
- 1-7 Cooling Capacity 65
- ● Heating Capacity 77
- 1-8 Noise Criterion Curves 78
- External Static Pressure 82
- Limit line 82
- 1-10 Air throw Distance Chart 83
- Tubing Length 85
- 0426_C_I 88
- 3 - ø40 hole 89
- 6 - ø6 hole 89
- 3 - ø60 hole 89
- 8 - ø6 hole 89
- Electrical Wiring 90
- 0511_M_I 91
- ■ Electrical Characteristics 93
- 1. Specifications 100
- Electrical Characteristics 100
- SM830080 105
- 2-1 Room Temperature Control 106
- SET SPEED 107
- 0673_X_S 108
- Chart Explanations and notes 109
- 2-4 Outdoor Fan Speed Control 110
- 2. Processes and functions 112
- 1566_M_S 114
- Fig. 14 116
- Fig. 13 116
- 0443_M_S 117
- (B) AUTO Control Mode 118
- (A) Cooling 119
- 0447_M_S 120
- 2-16 Dehumidifying Operation 121
- Auto-flap Control 122
- Ceiling-Mounted Type) 122
- 0451_M_S 123
- • Electric Wiring Diagram 126
- • Schematic Diagram 127
- This section explains: 139
- 0500_M_I 140
- 0499_M_I 141
- 0458_M_I 142
- 4. Service procedures 143
- (B) Heating 143
- 0654_C_I 146
- 1903_M_I 150
- 0340_M_I 151
- 0460_M_I 156
- 0652_M_S 157
- 0354_M_I 159
- Alarm message 160
- TEST RUN / CHECK button 160
- ON / OFF operation 160
- 0356_M_I 161
- Set CODE No. A1 with 165
- 0362_M_I 166
- (SET TEMP) button 168
- 0368_M_I 169
- 0639_X_S 173
- 0640_X_S 174
- 0641_X_S 174
- Multimeter 175
- 0643_X_S 176
- Indoor P.C.B. Ass’y 178
- Outdoor P.C.B. Ass’y 178
- 1251_X_I 179
- 1250_X_I 179
- • ACR 436 H - ACR 448 H 180
- Indoor Unit 180
- • ACR 425 H 180
- • ADR 425 H 181
- • ADR 436 H 181
- • ADR 448 H 181
- • AER 436 SHL3E 182
- Outdoor Units 182
- • AER 448 SHL3E 183
- Temperature (°C) 184
- 1577_C_I 188
- 1579_M_I 189
- 5. Appendix 190
- 5-1 P.C.B 191
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