Error code

Mitsubishi Electric PQHY code 7107

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Meaning

Branch port setting error Branch port No. setting of unit is wrong. Total type number per each port is greater than the specification. Is there a BC controller (Sub)? NO Is single branching setting made on 4 or more indoor units? NO Is the total type number of the indoor unit, on which single branching setting is made, greater than the item 1)? When multiple branches merge, is the smallest number set on the branch port? Change the branch port No.

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Possible causes

(1) Total type number of the indoor unit per each branch port or per each merge port the indoor is greater than the specification. branch Total port number Total type number 140 Single branching 2 branches merge 250 (2) Single branching setting is made on 4 or more indoor units. (3) When multiple branches merge, the smallest number is not set on the branch port. (4) For the address of the BC controller (Sub 1 or 2), 50 is not added to the smallest address of the indoor unit, which is connected to the BC controller (Sub1 or 2). (5) Under the multiple BC controllers connection system, the address of the indoor unit, which is connected to the BC controller, is not set as shown below. 1The address of the indoor unit which is connected to the BC controller (main) 2The address of the indoor unit which is connected to the BC controller (Sub1) 3The address of the indoor unit which is connected to the BC controller (Sub2) Address setting 1 < 2 < 3 ✻2 3 and can be reversed. YES YES YES Change Branch port No. the branch setting error? port No. NO Adjust the piping connection to the branch port. YES Change Branch port No. the branch setting error? port No. Change the The type YES indoor unit type (capacity code) (capacity code) setting switch is set setting. wrong.

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