Failed To Upgrade The Equipment; Failed To Save The Group Operation; Failed To Execute The Weekly Plan; Number Of Indoor Units Is Less Than The Number Of Indoor Units Connected - Midea CCM-270A/WS Service Manual

Touch screen centralized controller 10.1-inch

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1.6 Failed to Upgrade the Equipment

Solution: While upgrading the CCM-270A/WS software, always make sure that the upgrade file is correct otherwise the

upgrade would fail.

Solution: Group operation: Make sure you tap "Save" at the bottom of the page to save all create and edit operations

(delete operation excluded). Otherwise, the changes will be discarded.

Solution:

1. Check whether the expected execution date of weekly plan falls under a holiday period and "Holiday" option is not

selected during setup.

2. Check whether the expected execution date of weekly plan is not in the cycle (for example, the cycle is configured that

execution is carried out during working days only, while the expected execution date is at the weekends and is not a

user-defined date. In this case, the weekly plan will not be executed on the expected date).

3. Check whether the expected weekly plan is within the valid period of the cycle.

Solution: For the new units, certain wired controllers support the access of multiple IDUs where these IDUs will then form

a "wired controller group". In CCM-270A/WS, these IDUs will be treated as a single virtual IDU and in the icon view in the

"Control" page, the wired

Solution: Ensure that the picture is a .jpeg or .png or .jpg file less than 1Mb and stored in the USB disk. The file should not

be inside any folder. It should be just inside the USB disk

The CCM-270A/WS only supports the input of English alphabets through the touch screen side. If it is required to input

other languages, use a browser on the computer.

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