Solar Street Light Repair Methods

Solar street light malfunctions require systematic troubleshooting. The following procedures can resolve most common problem

I. Quick Diagnostic Process

1. Observe three key elements: Check if the solar panel is clean, check the indicator light status, and listen for any abnormal noises from the controller.
2. Basic Testing: After continuous rain, prioritize checking the battery; after continuous sunny days, check the controller for faults.
3. Step-by-Step Isolation: Test the power generation, energy storage, control, and lighting systems in sequence. What to do if your solar streetlights are not working?

II. Common Fault Repair

1. Completely No Lighting Fault

· Step 1: Check the Power System

Measure the battery open-circuit voltage: ≥12.5V for a 12V system.

Measure the solar panel open-circuit voltage: ≥18V on sunny days.

Measure the charging current: ≥70% of the nominal value at noon.

· Step 2: Check the Control System

Reset the controller: Disconnect the power for 5 minutes and then reconnect. Can Solar-Powered LED Lights Be Used Indoors?

Check settings: Confirm that the light control sensitivity is at an appropriate level.

Test the output: Short-circuit the control signal line and observe the lamp’s response.

· Step 3: Check the Lighting System

Measure the voltage across the LED terminals: It should have a normal operating voltage.

Check the connection lines: Pay special attention to the waterproof connectors.

Replacement Test: Cross-test with known working lamps.

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2. Short Lighting Time Fault

· Battery Testing:

Capacity Test: Record discharge time after fully charging with a standard load.

Internal Resistance Test: Measure battery internal resistance using a dedicated instrument.

Visual Inspection: Check for bulges and leaks.

· Charging System Testing:

Track Charging Curve: Record charging voltage changes throughout the day.

Clean Solar Panel: Thoroughly remove dust from the frame.

Adjust Installation Angle: Ensure optimal sunlight reception.

3. Intermittent Lighting Fault

· Check All Connectors: Reconnect and reconnect all connectors.

· Vibration Response Test: Gently tap the light pole and observe changes.

· Temperature Effect Monitoring: Record the ambient temperature when the fault occurred. Solar Garden Light Automatic Switch Setup

III. Component Replacement Guidelines

Solar Panel Replacement
Replacement Conditions:

1. Power degradation to below 60% of initial value.
2. Glass breakage area exceeds 10%.
3. Used for more than 8 years.

Replacement Steps:

4. Mark the original wiring polarity.
5. New panel power is not lower than the original specification.
6. Adjust to the optimal tilt angle and fix.

Battery Replacement
Replacement Timing:

1. 1. Capacity less than 50% of nominal value
2. Charge/discharge cycles exceeding 800 cycles
3. Winter discharge time < 4 hours

Selection Recommendations:

· Ordinary areas: Deep-cycle gel batteries

· Cold areas: Low-temperature resistant lithium batteries

· High-temperature areas: Enhanced heat dissipation models

LED Module Replacement

Replacement Judgment:

1. Light decay exceeding 30%
2. Damaged LEDs exceeding 20%
3. Obvious color difference

Operation Points:

4. Record the original wiring method
5. Match the power of the new module to the controller
6. Apply thermal grease evenly

IV. Controller Repair

Fault Identification

1. LED indicator light flashes abnormally
2. Abnormal charging/discharging parameters
3. Time control function malfunction

Solutions

1. Restore factory settings (follow the instruction manual)
2. Update firmware
3. Replace with the same model controller

V. Professional Maintenance Points

Electrical Safety Measures

1. Disconnect all power before maintenance
2. Use insulated tools for operation
3. Safety belts must be worn for high-altitude operations.

Waterproof sealing treatment. Key sealing points:

1. Joint between lamp head and lamp body
2. Battery compartment door sealing strip
3. Conduit inlet

Sealing material: Silicone rubber sealing ring + waterproof adhesive

Lightning protection inspection. Annual pre-rainy season inspection:

1. Grounding resistance < 10Ω
2. Lightning arrester in normal condition
3. Cable shielding layer intact

VI. Seasonal maintenance priorities

Spring maintenance (March-April)

1. Thoroughly clean solar panels
2. Inspect for winter damage
3. Adjust lighting time settings

Summer maintenance (June-July)

1. Strengthen heat dissipation system inspection
2. Rainstorm protection sealing test
3. Clear surrounding weeds

Autumn maintenance (September-October)

1. Reinforce installation foundation
2. Test battery capacity
3. Prepare anti-freeze measures

Winter maintenance (November-December)

1. Optimize installation angle
2. Battery insulation treatment
3. Snow Accumulation Prevention Plan Implementation

VII. Preventive Maintenance Plan

Monthly Inspection Items

1. Surface Cleanliness
2. Indicator Light Status
3. Foundation Stability

Quarterly Inspection Items

1. Electrical Parameter Measurement
2. Mechanical Structure Inspection
3. Protection Level Verification

Annual Overhaul Items

1. System Efficiency Assessment
2. Component Lifespan Prediction
3. Technology Upgrade Planning

VIII. Maintenance Record Standards

Each maintenance should record:

1. Fault Phenomenon Description
2. Test Data Record
3. Replacement Component List
4. Maintenance Effectiveness Verification

Precautions

1. Outdoor maintenance is prohibited in rainy weather.
2. Professional recycling of used batteries.
3. Replacement components should match original parameters.
4. Follow-up observation for 72 hours after maintenance.

Through systematic maintenance management, the failure rate of solar streetlights can be reduced by more than 40%, and the service life extended by 3-5 years. It is recommended to establish a regular inspection system for early detection and handling to ensure the stable operation of the lighting system.