SG-38MARB-01 Specifications subject to change without notice. 33
DIAGNOSIS AND SOLUTION (CONT)
Outdoor EEPROM Parameter Error or Compressor Driven Chip EEPROM Parameter Error (EC51)
Description: Outdoor PCB main chip does not receive feedback from the EEPROM chip or the compressor driven chip.
Recommended parts to repair:
• Outdoor PCB
Troubleshooting
Remarks:
EEPROM: A read-only memory, with contents that can be erased and reprogrammed using a pulsed voltage.
Fig. 38 — EEPROM
NOTE: For certain models, the outdoor PCB could not be removed separately. In this case, the outdoor electric control box should be
replaced as a whole. This pictures are only for reference and the actual appearance may vary.
Shut o the power. Wait two
minutes then turn the unit on.
Does the error code
still appear?
YES
Replace the outdoor main PCB.
The unit is operating normally?NO
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