MXZ-SM36NAMHZ Service Manual

107

OCH789

Check code

7105

(EF)

Address setting error

Abnormal points and detection methods Causes and checkpoints

The address setting of outdoor unit or branch box is wrong. Wrongly set address of branch box

The outdoor unit is not set in 000, or in the range of 51

to 100.

●Diagnosis of defects

Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.

Diagnosis Remedy

Yes

Is the address setting correct?

Set the address properly, then turn the

power OFF of indoor/outdoor unit, branch

box, Fresh Master, Lossnay, and remote

controller simultaneously for 2 minutes or

more, and turn the power back ON.

Replace the branch box controller board.

Check whether the branch box address is

set in 000, or in the range of 001 to 050.

Note: Branch box address

When setting the address, use a number within the range of 1–50.

Ex. The set address is (47) and there are 5 indoor units (A, B, C, D, and E).

If A: (47), B: (48), C: (49), D: (50), and E: (51), E is incorrect because it exceeds 50.

Yes

Is the address setting correct?

Set the address properly, then turn the

power OFF of indoor/outdoor unit, Fresh

Master, Lossnay and remote controller

simultaneously for 2 minutes or more, and

turn the power back ON.

Replace the outdoor controller board.

Check whether the outdoor unit address is

set in 000, or in the range of 51 to 100.