Error code

Mitsubishi Electric CMB code 7107

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Meaning

Port setting error: The port with wrong number is connected to the indoor unit.The model total connected to the port is greater than the specification.

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Possible causes

(2) 4 or more indoor units are connected to the same port. (3) When two ports are used, the port with the smaller number is not connected to the indoor unit. (4) The address of the HBC controller is not set to an address that equals the address of the lowest address of the connected indoor unit plus 50. (5) In the system to which multiple HBC controllers are connected, the indoor unit address connected to the HBC is not set as shown below. (i) The indoor unit address which is connected to the HBC controller (Main 1) (ii) The indoor unit address which is connected to the Sub-HBC controller (Sub 1) (iii) The indoor unit address which is connected to the HBC controller (Main 2) (iv) The indoor unit address which is connected to the Sub-HBC controller (Sub 2) Address setting (i) < (ii) < (iii) < (iv) (6) Indoor units (P30 or above) using two branch ports are connected to two branch ports across the groups listed below. [Main/Sub HBC controller] Group 1: Branch port No. 1 to No. 4 Group 2: Branch port No. 5 to No. 8 Group 3: Branch port No. 9 to No. 12(*) Group 4: Branch port No. 13 to No. 16(*)

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