AUX E Series, Руководство по обслуживанию

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AUX air conditioner service manual
presumed that fault was on bearing bush of left blade. Replaced bearing bush, noise could still be
heard. Maintenance personnel checked wind blades and found that they’re installed left to the center
and blade axis touched rubber seat of bearing and produced noise when running.
Solution: move wind blade to right by 2mm and noise was eliminated.
Experience Conclusion: foregoing noises also can be created from following problems:
⑴ Screw of fix motor gland becoming loose
⑵ Bearing seat left to indoor fan becoming loose
⑶ Oily bearing left to indoor fan is broken or lacks
oil;
⑷ Left axis of blade colliding with rubber bearing
holder
⑸ Fix screw of indoor fan becoming loose;
⑸ Two ends of indoor fan colliding
⑺ Chassis has deformed and collides with blades
⑻ Blades trip too excessively and collide with
chassis
⑼ Blades being broken
Case 2 : Indoor fan motor noise
Unit Model ： ASF-H18A4/FSY
Phenomena ： Whistling from indoor unit
Cause Analysis: air conditioner was newly installed, during test running, air conditioner made
whistle-like noise. Maintenance personnel presumed that it was caused by blades. Maintenance
personnel replaced blades of the same model, but noise remained the same. Replaced the motor with
an YDK30-8-155 motor produced by Jiangsu Weiteli Co., replaced capacitor with a new one of 3.5
μ F
YDK30-8A, noise cleared off. We analyzed faulty motor and found that amplitude and frequency
produced by running motor vibrated with unit shell and wind system, and interfered with air flow.
Solution: replaced indoor fan motor
Experience Conclusion: indoor unit noise is generally resulted by blades or motor, if it is difficult to
decide the fault source, we can adopt method of denying one by one.
Case 3: Wind Sound of H-Series Air Conditioner
Unit Model ： ASW-H12A4/HS
Phenomena ： Wind sound of indoor unit
Cause Analysis: when indoor unit was running, wind sound varied with the swing of fan blades;
according to our analysis, plastic-sealed motor or controller has some faults, change motor and
controller, faults remain the same. Maintenance personnel pushed on manual swing button; wind
sound disappeared, so the reason was as follows: when air blades swung, wind outlet area varied;
when it swung to the top position, outlet area was smallest; wind was obstructed and produced wind
sound.
Solution: replaced the faulty controller with Motorola chip controller
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