Electrical Diagram
12k wiring diagram of split unit indoor
MODULE BOARD
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| CN6CN9 CN8 |
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| R |
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| CN7 |
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M
CN1
WARNING
CAUTION
DON'T TOUCH CAPACITOR, EVEN AFTER
The capacitor retains high voltage even after the
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| PFC REACTOR | Y/G |
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| CN5 | CN4CN3CN2 |
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| GND |
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| BL |
| OR |
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| M |
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to | W | CN1 | W | B |
| CN22 |
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exchange motor | B |
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INDOORUNIT |
| CN2 | PE |
| CN23 |
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| CN24 |
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| 1 23 | CN3 |
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| M | MOTORFAN | |||||
| CN4 | MAIN CONTROL BOARD |
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| CN21 |
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TO |
| Y/G | CN8 | CN9 |
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| DC |
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| 1A/250VAC CN10 CN15CN14 | CN13 |
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| GND | FUSE2 |
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| CN16 CN20CN19 CN18 CN17 |
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| CN11 |
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to |
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air exchange motor | BL BL |
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| M |
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| AC FAN MOTOR | AMBIENTTEMP.SENSOR | DEFROSTTEMP.SENSOR | SUCTIONTEMP.SENSOR |
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| TEMP.SENSOR DISCHARGECOMPRESSOR |
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| ELECTRIC |
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| Electric |
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| EXPANSION VALVE |
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| Heating Cable |
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B：BLACK |
| W：WHITE |
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R：RED | Y/G：YELLOW/GREEN Remark：the dotted parts are |
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BL：BLUE | OR：ORANGE | optional for different unit. |
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at least 5 minutes. after plug off and use a tester to confirm the voltage between connector P and N(on module board) is less than DC 10V before start servicing.
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| Description | LED1 Flash | |
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| Times | |
Outdoor | EEPROM error |
| 1 | |
The protection of IPM |
| 2 | ||
Overcurrent protection |
| 3 | ||
of | AC electricity |
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Communication fault |
| 4 | ||
between the IPM and CBD |
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Over pressure or Overheat |
| 5 | ||
protection for the compressor |
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Power voltage is too high or low |
| 6 | ||
Overheat protection for |
| 8 | ||
exhaust temperature |
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sensor failure |
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Ambient temperature sensor failure |
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Exhaust temperature sensor failure |
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Deviate from the normal |
| 18 | ||
for the compressor |
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Loop | of | the station detect error |
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Overcurrent of the compressor |
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Overcurrent protection for |
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11
