專業電器維修服務

Possible causes：Power failure, switch damage, blown fuse, motor failure, capacitor damage

Self-treatment：
1. Check if the power socket is supplying power normally
2. Confirm that the power switch is turned on
3. Check for broken or loose wires
4. Reset circuit breaker or replace fuse

Professional treatment：Motor testing, capacitor replacement, circuit repair

Possible causes：Bearing wear, unbalanced fan wheel, loose fixing screws, motor aging, foreign objects entering

Self-treatment：
1. Turn off power and check for foreign objects stuck in fan wheel
2. Tighten loose fixing screws
3. Clean oil and dust from fan wheel
4. Check if installation is level and stable

Professional treatment：Bearing replacement, fan wheel balance correction, motor repair/replacement

Possible causes：Oil mesh blockage, fan wheel oil accumulation, pipe blockage, capacitor capacity drop, insufficient motor power

Self-treatment：
1. Remove and thoroughly clean oil mesh
2. Clean oil accumulation on fan wheel
3. Check if smoke exhaust pipe is bent or blocked
4. Confirm check valve opens flexibly

Professional treatment：Pipe dredging, capacitor replacement, fan wheel replacement, motor upgrade

Possible causes：Oil cup overflow, oil pipe blockage, seal aging, installation tilt, oil mesh not cleaned in time

Self-treatment：
1. Timely clean oil accumulation in oil cup
2. Dredge blocked oil pipes
3. Check if installation is level
4. Regularly clean oil mesh and internal oil passages

Professional treatment：Seal replacement, reinstallation angle adjustment, oil circuit modification

Possible causes：Check valve failure, insufficient exhaust pipe diameter, high public flue pressure, wrong installation direction

Self-treatment：
1. Check if check valve closes properly
2. Clean oil and foreign objects from check valve
3. Ensure exhaust pipe connection is tight
4. Avoid use during peak hours

Professional treatment：High-seal check valve replacement, exhaust pipe diameter increase, anti-backflow device installation

Possible causes：Burned bulb, poor lamp holder contact, light switch failure, circuit break, blown fuse

Self-treatment：
1. Replace with new bulb of same specification
2. Check lamp holder for oxidation or looseness
3. Clean lamp holder contact points
4. Check if light switch is working normally

Professional treatment：Circuit inspection, switch replacement, circuit board repair