Sanyo KH2442 / CH2442 User Manual Page 180
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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4. Service procedures
SM830082
IV - 24
1
2
3
4
Section
5
(D) Check the remote controller itself for correct operation
The remote controller has a self-diagnostic function to check for problems in the remote
controller itself.
In order to check, the shorting plug (2P) inserted in the socket (4P) on the back of the remote
controller circuit board should be moved from RCU.Main to RCU.CK. (Ref. Fig. IV-6)
● Checking serial communications
The remote controller’s own serial communications sending and receiving circuits can be
checked by moving the shorting plug. The indicators will respond as follows for approximately
10 seconds, then turn off:
Correct : All indicators light up.
Incorrect : All indicators flash on and off.
● Checking I/O circuits
After completing the serial communications check (for 10 seconds), operate each switch on
the remote controller. If the LCD display responds, then the remote controller is normal.
NOTE
1) Be sure that the shorting plug is inserted onto RCU.Main during normal operation.
2) The remote controller self-diagnostic function can be run on a remote controller
independently if power of 9–16 VDC is supplied to plug 2P as shown in Figure IV-6.
(A 12-Ω 1/4-W resistor must be placed in between.)
Never press (clear) button unless you want to erase the accessed data in memory. Follow
the procedure below only when erasing is necessary.
❏ To erase accessed data, press the button.
❏ When erasing is finished,“----” mark appears on the controller’s display.
After checking the alarm messages, be sure to press the button.
Important
CAUTION
Fig. IV-6
During normal
operation
Shorting plug
is moved.
During self-
diagnostic check
2079_M_I
TIMER
TMNL.
RCU
TMNL.
RCU.ADR
RCU.Main
RCU.Sub
RCU.CK
12Ω•1/4W
DC9
~16V
- 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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