Sanyo KH2442 User Manual Page 137
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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II - 17
SM830082
1
2
3
4
Section
5
2. Processes and functions
2-15 Compressor Current Detection Circuit
❑ The Compressor Current Detection Circuit detects the compressor current and,
depending on the current range, can stop the compressor motor so it will not be
damaged by overcurrent.
❑ Overcurrent can be caused by several factors, particularly mechanical seizing of the
compressor or liquid backflow. Either of these conditions can hold the compressor
to run, and thus drawing so much current that the motor can burn out.
Fig. 18
Locked Comp. Cut-off Range
Overload Protection Range
Normal Operation Range
Comp. Amps.(A)
Is 1.17
Is 1.4
Is
Rated Current
value
+
+
0447_M_S
Outdoor Model
Rated Current Value Overload Protection Locked Compressor Cut-off
ls (A) ls x 1.17 (A) Is x 1.4 (A)
CH2442 17.1 20.0 23.9
CH3642 27.5 32.2 38.5
CH4242 34.7 40.6 48.6
Chart Summary and Explanations
❑ Overload Protection
• When the detected current is 1.17 – 1.4 times greater than the rated current value (Is) and continues
for 30 seconds, both compressor and outdoor fan stop (Thermostat OFF).
• After 3-minute pause, if the air conditioner is ready for Thermostat ON, it starts again. However, if the
condition mentioned above repeats twice within 30 minutes, the remote controller displays the alarm
message H01, compressor overload.
❑ Locked Compressor Cut-off
• When the detected current is 1.4 times greater than the rated current value (ls) and continues for 2
seconds, both compressor and outdoor fan stop (Thermostat OFF).
• After 3-minute pause, if the air conditioner is ready for Thermostat ON, it starts again. However, if the
condition mentioned above repeats twice, the remote controller displays the alarm message H02,
compressor locked.
❑ Failure of Compressor Current Detection
• When the Compressor Current Detection Circuit fails to detect the compressor current within 2
seconds after compressor starts, both compressor and outdoor fan stop (Thermostat OFF).
• After 3-minute pause, if the air conditioner is ready for Thermostat ON, it starts again. However, when
the circuit fails to detect the current twice in a row, the remote controller displays alarm message H03,
Failure of compressor Current Detection.
- TECHNICAL DATA 1
- SERVICE MANUAL 1
- Important 2
- WHO SHOULD USE THIS MANUAL 3
- TABLE OF CONTENTS 3
- 1. Specifications 10
- 1-1 Unit Specifications 10
- (A) Indoor Unit 16
- (B) Outdoor Unit 26
- 1-4 Dimensional data 42
- 36, 42 Type 43
- Dimension : inch 46
- 1914_U_I 46
- 1915_U_I 47
- 2179_THS_I 51
- 1581_C_S 52
- 2180_THS_I 53
- 1398_THS_I 53
- 2181_THS_I 54
- • 230V / 1 phase / 60Hz 55
- • 208V / 1 phase / 60Hz 56
- M.R.= 10.47 USpints/h 57
- 2182_X_S 75
- 2184_X_S 76
- 2186_X_S 78
- 1159_X_S 81
- 1160_X_S 81
- 2191_X_S 81
- 2193_X_S 84
- 2235_X_S 87
- Discharge pressure (psig) 88
- Suction pressure (psig) 88
- 1459_X_S 89
- 1165_X_S 91
- 2229_X_S 93
- 2108_X_I 94
- 1221_X_I 95
- 2113_X_I 95
- 2114_X_I 95
- 1-10 Noise Criterion Curves 96
- ● Concealed Duct Type 96
- 2120_K_I 97
- ● Outdoor Units 98
- 2159_M_I 99
- 1982_U_I 99
- 1983_U_I 99
- Model: 24 Type 100
- Model: 36, 42 Type 100
- 2115_T_I 101
- 2116_T_I 101
- 2117_T_I 101
- Axis air velocity 102
- SM830082 103
- 0931_C_I 105
- 3 - ø1-9/16" hole 106
- 6 - ø15/64" hole 106
- 3-ø2-3/8" hole 106
- 8-ø1/4" hole 106
- ■ ELECTRICAL WIRING 108
- ● Wiring System Diagrams 109
- I - 107 111
- I - 109 113
- I - 111 115
- I - 113 117
- I - 115 119
- 2-1 Room Temperature Control 122
- SET SPEED 123
- 1135_THS_I 124
- 1923_M_S 125
- 1924_M_S 125
- 2-4 Outdoor Fan Speed Control 126
- 1925_THS_I 127
- 2. Processes and functions 128
- 1926_THS_ 128
- 1927_THS_I 129
- II - 11 131
- 0442_M_S 133
- 1143_THS_I 133
- 0443_M_S 134
- (B) AUTO Control Mode 135
- (A) Cooling 136
- 0447_M_S 137
- 0451_M_S 138
- 3. ELECTRICAL DATA 140
- • Electric Wiring Diagram 141
- • Schematic Diagram 142
- 4. SERVICE PROCEDURES 157
- 4-1 Troubleshooting 158
- Fig. IV-1 159
- 0458_M_I 160
- 0459_M_I 161
- 4. Service procedures 162
- 2095_THS_I 165
- 2096_THS_I 166
- 0335_M_I 167
- 0336_M_I 167
- 0337_M_I 168
- 2098_THS_I 169
- 2099_THS_I 170
- 0344_M_I 171
- 0647_M_S 173
- 0460_M_I 174
- 0346_M_I 174
- 0650_M_S 175
- 2101_M_S 175
- 0461_M_I 176
- IV - 21 177
- Fig. IV-3 177
- Fig. IV-4 178
- IV - 23 179
- Fig. IV-5 179
- Fig. IV-6 180
- RCU.Main 180
- 1931_M_I 181
- 1932_M_I 182
- IV - 27 183
- Fig. IV-10 183
- 2080_M_I 185
- (1) Measurement of Insulation 186
- Resistance 186
- Soldering iron 189
- PCB Ass’y 189
- Fuse Varistor 189
- 1044_M_I 191
- 1149_THS_I 191
- (5) PCB Setting 192
- 2094_C_I 195
- 1371_C_I 196
- CR-TH2442 198
- CR-CH2442 199
- (13) TMX60 pins 201
- SANYO FISHER Service Company 202
- CENTRAL REGION 202
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