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Shane LopezAug 6, 2025
What to do if the Toshiba Air Conditioner indoor remote controller is not accepted and a check code is displayed?
- LLori JohnsonAug 6, 2025
If the indoor remote controller isn't working and a check code appears on the interface PC board of the header unit, the issue might stem from unset addresses or incorrect power settings. Start by setting up the addresses for the line and indoor units. If you're using group control, make sure a group address is set up. Also, confirm that the indoor unit power is turned on, ensuring you power on the indoor units before the outdoor units. Finally, check that the indoor/outdoor communication line is correctly connected to the U1/U2 terminal of the header unit.