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Use this checklist as the first step whenever you notice underperformance or any abnormal symptom in your PV system.
If power generation drops or any abnormal symptom appears
during plant operation, please review the following items first.
Module Visual Inspection
Look for any of the following:
Shading Check
Shading may originate from:
Soiling Check
Heavy surface soiling can cause hotspots and reduced output.
Inverter Status
If an anomaly is confirmed, please check the warranty coverage below and submit a service request.
Hansol Energyon solar modules are covered by both Product Warranty and Performance Warranty. Please review the scope and exclusions below.
Our modules are manufactured under strict quality standards.
The following warranty policies support reliable, long-term operation.
Product Warranty
Performance Warranty
For exact warranty terms and durations, please refer to the product warranty certificate or your contract.
The warranty does not cover
the following cases.
Installation that does not comply with the installation manual
Damage caused by external impact or natural disasters
Unauthorized modification or repair of the product
Operation outside the specified environmental conditions
If issues persist after the self-inspection, please submit a service request following the procedure below.
If symptoms persist after self-inspection and warranty review, please proceed with a service request. PV plant output and operating conditions can be affected by site, weather, soiling and other external factors.
Please review the self-inspection items and the warranty policy above before submitting your request.
Self-Inspection Review
Installation & Workmanship Review
If symptoms persist after the above checks, please proceed with a service request following the steps below.
Please include the following information when submitting your request.
Plant Information
Product Information
Symptom Description
Complete and Send the Service Form
Download the form for your product line, fill in plant, product and symptom details, and return it along with the array layout, plant drawings, warranty certificate and any supporting evidence. A case number will be issued upon successful intake.
Submission Channel
Please submit by email with the completed form and supporting documents attached. Our team will review the request and respond with an inspection schedule and proposed remedy.
PV module performance and system operation
can be influenced by the following external factors.
Weather conditions and irradiance
Impact of trees or surrounding structures
Module surface soiling
Installation environment and maintenance status
Performance variations caused by these environmental factors are not considered product defects and may not be covered under warranty.