Troubleshooting; Indoor Unit Error Display - Toyotomi MTN-MTG A128FS Service Manual

9. Troubleshooting

9.1 Indoor unit error display

Operation lamp Timer lamp Failure
X Indoor fan speed has been out of control
O The T1 or T2 sensor is open circuit or short circuit
X Over current protection occurs 4 times.
O EEPROM error
Zero crossing detection error
（light） X （off） （flash）
O
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