Case Analysis of Panasonic Air Conditioner Repair: High Noise from Indoor Unit
Fault Phenomenon: The user reported high noise from the indoor unit.
Fault Analysis: Preliminarily judged as loose mounting between the indoor unit and the wall bracket, or poor assembly of the indoor motor and oil-bearing bearings.
Repair Process: The installation of the indoor unit was relatively standard. When checked under the fan mode set by the remote control, the operating noise of the indoor unit was basically normal (Note: Beijing志高air conditioner after-sales service hotline). However, when set to cooling mode, after the outdoor unit started working, the noise from the indoor unit gradually increased and became a vibration sound. After checking, there was no throttling caused by bent or flattened pipes in the tubing connecting the indoor and outdoor units (Note: Beijing Sharp air conditioner repair phone number). The wall hole was resealed, but the noise still persisted. Finally, upon opening the indoor unit, it was found that the oil-bearing bearing assembly had shifted and was almost damaged. After replacement, the unit returned to normal operation.
Maintenance Measures: Replaced the oil-bearing bearing, adjusted the贯flow fan, and the fault was eliminated.
Beijing Panasonic Air Conditioner After-Sales Service Hotline - Providing materials.
(Note: "贯flow fan" may need to be clarified as "axial flow fan" depending on context, and certain brand-specific hotline references were left in Chinese for authenticity but can be omitted or translated based on preference.)