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Diagnosing Solar Faults & Lost Generation
Fault-finding is tailored to the concern you report. We assess accessible panels, the inverter, wiring and electrical connections, review available fault history and carry out appropriate safety and performance tests. You’ll receive a clear report of our findings and recommendations. This is a diagnostic visit for a suspected issue; a planned yearly check is covered by our Annual Inspections service.
Solar PV System Inspection
What We Check
1. Roof & Panel Condition (if roof access is available)
Visual inspection of roof area and panel layout
Photos of panel condition, mounting clamps, and ballast distribution
Check for any visible damage or structural concerns
2. Inverter Inspection
Full visual check of inverter front, sides, stickers, and overall condition
Review of inverter screen and fault history
Confirmation of correct mounting surface (non‑combustible)
Check for required smoke alarms near inverter and in communal areas
MPPT/DC connection inspection
3. Mains & Electrical Components
Distribution board (DB) inspection and connection check
AC isolator condition and wiring check
Earth bonding verification
Cable routes and conduit condition
PV junction box presence/condition (if applicable)
4. System Testing
AC voltage readings
DC string voltage readings across all inverters/strings
Clamp meter readings
General electrical safety and performance checks
5. Documentation & Labelling
Installer details verification
Check for datasheets and manuals
Single Line Diagram (SLD)
Emergency shutdown procedure
Dual supply label
PV on roof label (if present)
6. Additional Findings
Identification of faults (e.g., inverter display issues, error codes)
Notes on damaged parts or external issues
Confirmation of whether cleaning or minor works were completed
Any additional engineer observations
7. Customer Information (Where Applicable)
Interest in upgrades or monitoring
Referral scheme information
Service satisfaction feedback
8. Full Photo Record
Complete photographic evidence of all inspected components
Solar Thermal System Service/inspection
What’s Included
1. Roof & Collector Check (if roof access is available)
Visual inspection of solar collectors and roof fixings
Check for leaks, corrosion, or physical damage
Verification of insulation and pipework condition
2. Pump Station & Controls
Inspection of pump operation and speed settings
Check for correct flow rate and pressure
Review of controller settings and temperature sensors
Confirmation of antifreeze protection level and concentration
3. Expansion Vessel & Pressure Relief
Pressure test and re‑charge of expansion vessel
Check pressure relief valve operation
Inspection for leaks or signs of wear
4. Pipework & Valves
Check all valves, joints, and connections for leaks
Inspection of insulation and routing
Verification of correct flow direction and isolation points
5. System Performance Testing
Temperature differential checks (collector vs. store)
Pump speed and flow rate verification
Review of system efficiency and heat transfer performance
6. Controller & Electrical Components
Check controller display and fault history
Verify sensor readings and wiring integrity
Confirm correct operation of automatic and manual modes
7. Fluid Quality & Antifreeze Protection
Test glycol concentration and freeze protection level
Top‑up or replace fluid if required
Record antifreeze protection temperature
8. Documentation & Service Record
Record all readings and settings
Note any faults or recommendations
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