Causes of failure and solutions:
(1) the cause of failure: the wall mounted fixed wall plate is not loose or uneven. Maintenance method: refix the wall board, or deal with the wall, so that the wall board is kept flat.
(2) the cause of the failure: the assembly of the wall type indoor fan motor and the intersecting wind wheel and the bearing of the fan is not in place, and the frictional sound causes the noise of the air conditioning indoor machine. The maintenance method is to re adjust the indoor fan motor, the intersecting wind wheel and the assembly position of the fan bearing. (3) the reason for the failure: the indoor fan motor and the tubular turbine are unassembled.
Maintenance methods: Inspection and judgment respectively. First, the intersecting wind wheel is taken off, such as the noise elimination. That is, the intersecting flow wind wheel is replaced (the reason is that the intersecting wind wheel is not balanced or deformed); otherwise, the inner fan motor fault is replaced by the inner fan motor.