Toshiba MCY-MHP0504HS-E

Questions and Answers

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Christopher ParkNov 8, 2025
Why does my Toshiba MCY-MHP0504HS-E remote controller display a check code?
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  Anne MillerNov 8, 2025
  If a check code is displayed on the Toshiba Air Conditioner remote controller, it could be due to several reasons: * The outdoor unit power might be off, so ensure it is turned on. * There might be an address setup error, where line addresses of connected indoor units are undefined, the outdoor line address doesn't match the indoor units, or indoor addresses are duplicated. In this case, set up the address again. * There could be indoor/outdoor communication circuit trouble. Check SW30 bit 2 of the outdoor unit and the communication connector between the indoor and outdoor units. * A transmission circuit trouble at the interface side (P.C.board failure) might exist, requiring replacement of the interface P.C. board. * Communication from all indoor units might be interrupted afte...
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Allison DoyleNov 17, 2025
What to do if the Toshiba Air Conditioner displays fewer connected units after address setup?
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  Jacob RiosNov 17, 2025
  If your Toshiba Air Conditioner displays a lower number of connected units than expected after address setup, and some units don't operate during a test, it could be due to: * Miswiring or unconnected communication lines between indoor units. After correcting the wiring, set up the addresses again and check the number of connected indoor units. * The indoor remote controller is not connected with a wire, or there's miswiring. Use the main indoor remote controller to start a test operation, specify the non-operating unit, and check the wiring. * Indoor remote controller communication circuit trouble, possibly due to incorrect voltage application. Use the main indoor remote controller to start a test operation, specify the non-operating unit, remove the quick connect terminal connecte...
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lowejulieNov 26, 2025
Why is there no check code displayed on my Toshiba MCY-MHP0504HS-E?
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  Shaun LewisNov 26, 2025
  If there is no check code displayed on the 7-segment display of your Toshiba Air Conditioner, consider the following: * The communication line between the indoor and outdoor units might be disconnected. Modify the wiring. * The line address and indoor address might not be set. Set up the address. * The outdoor unit's power might be off in indoor group control. Turn on the power. * A group address might be set for a follower unit in individual control. Set the group address to “0” for individual control. * The power might not be turned on. Turn on the power. * The indoor remote controller might not be connected with a wire. Modify the wiring. * There might be miswiring of the indoor remote controller. Modify the wiring. * There could be indoor remote controller communicatio...