Use this checklist to plan routine care. Monthly items can be done by the owner or facility team; quarterly and yearly items should be done by a qualified solar technician.
Monthly
- Review generation versus the same month last year
- Check the display and app for error codes
- Make sure vents are clear and the area is dry
- Listen for abnormal fan or relay noise
Quarterly
- Clean external vents, fans and filters
- Inspect DC and AC cables and MC4 connectors for heat damage
- Check string-wise currents for imbalance
- Verify monitoring and data logging
Yearly
- Torque check of all terminations
- Insulation resistance and earthing tests
- Thermal imaging of inverter and DC/AC boxes
- Internal cleaning and fan replacement if worn
- Firmware review and full service report
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