Toshiba MMY-MAP0724HT6UL User Manual (English)

Questions and Answers:

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fmoranAug 1, 2025
Why does my Toshiba Air Conditioner remote control display a check code?
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  Colin McculloughAug 1, 2025
  If a check code appears on your Toshiba Air Conditioner's remote, it could be due to several reasons. First, ensure the header outdoor unit power is on. Address setup errors, such as undefined or mismatched line addresses, or duplicated indoor addresses, can also cause this. Try setting up the address again. Also, verify that the number or capacity of connected indoor units is within limits and that communication between outdoor units is stable. If the outdoor address was manually set up, revert to automatic setup. Finally, make sure only one indoor unit is set up with priority.
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Ariel BellAug 8, 2025
What to do if the Toshiba MMY-MAP0724HT6UL doesn't respond to the remote and shows a check code?
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  Ricardo LewisAug 9, 2025
  If your Toshiba Air Conditioner's indoor remote control isn't working and a check code appears on the interface PC board, start by setting up the addresses. If you're using group control, make sure a group address is set up. Verify that the indoor unit power is on, turning it on before the outdoor unit. Ensure the indoor/outdoor communication line is correctly connected to the header unit's U1/U2 terminal. Also, check SW30 bit 2 of the header unit. Finally, ensure all SW08 switches are turned off.
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Daniel SmithAug 16, 2025
What to do if my Toshiba MMY-MAP0724HT6UL displays fewer connected units than expected?
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  Paige JamesAug 16, 2025
  If your Toshiba Air Conditioner displays a lower number of connected units after address setup, it might be due to miswiring or unconnected wires in the communication lines between outdoor or indoor units. To resolve this, modify the wiring and set up the addresses again. Then, check the number of connected outdoor and indoor units. If the issue persists, and you are using an indoor remote control connected to a group, initiate a test operation to identify the non-operating unit and inspect its wiring.
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Jonathan WardAug 25, 2025
What to do if Toshiba Air Conditioner doesn't respond to the remote, but no check code is displayed?
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  bcastilloAug 25, 2025
  If your Toshiba Air Conditioner isn't responding to the indoor remote control, and there's no check code on the interface PC board, start by checking the communication line between the indoor and outdoor units. Ensure the line and indoor addresses are correctly set for the unit that's not responding. If you're using group control, verify that the power to the header unit of the group is on. For individual control, confirm the group address is set to '0'. Also, check if the indoor remote control is wired correctly and that the power is on for the unit.