Solar articles

Free Solar knowledge from the Manuall Trade Library: diagnostic trees, SOPs, estimating and pricing guidance, and the business side of running a shop. No account needed; read it, share it, put it to work.

163 articles

Troubleshooting Diagnostics

Inverter Derates Only on Hottest Days vs Fan Failure: Decision Tree

Solar

Troubleshooting Diagnostics

HVAC Or Pool Pump Vs Solar Which Drives Grid Pull At Noon Decision Tree

Solar

Troubleshooting Diagnostics

Solar Ground-Fault Trips Only After Morning Dew: Decision Tree

Solar

Troubleshooting Diagnostics

Ground Fault Clears When One String Is Isolated

Solar

Troubleshooting Diagnostics

Fixed One Dead String Now Another Underperforms: Second Fault Masking Decision Tree

Solar

Troubleshooting Diagnostics

Solar Fixed Comm Dropout Now One Microinverter Zero: Second Fault Masking Decision Tree

Solar

Troubleshooting Diagnostics

Fan Noise From Inverter Loud Only On Hot Days Fan vs Derate vs Bearing Decision Tree

Solar

Troubleshooting Diagnostics

Discoloration On Module Surface Soiling Vs Delamination Vs Hot Spot Single Observable Decision Tree

Solar

Troubleshooting Safety

Solar Customer Turned Off Rapid Shutdown Switch Themselves: DIY Induced Decision Tree

Solar

Troubleshooting Diagnostics

Customer Says Panels Look Dirty But Production Fine Clean Now vs Defer Decision Tree

Solar

Troubleshooting Diagnostics

Customer Says Bill Went Up But Monitoring Shows Normal Translation Decision Tree

Solar

Troubleshooting Diagnostics

Customer Reset Inverter Repeatedly Before Call: DIY Induced Decision Tree

Solar

Troubleshooting Diagnostics

Customer Reports Flickering Lights Since Install Inverter vs Grid vs Panel Translation Decision Tree

Solar

Troubleshooting Diagnostics

Solar Customer Added Load Then Blamed Panels: DIY Induced Misattribution Decision Tree

Solar

Troubleshooting Equipment

Solar Connector Discolored But Still Passing Current: Replace Now vs Monitor Condition Decision Tree

Solar

Troubleshooting Diagnostics

Buzzing Or Clicking From Inverter Relay Vs Coil Vs Transformer Decision Tree

Solar

Troubleshooting Safety

Burning Smell Near Combiner No Fault Shown Which Check First Decision Tree

Solar

Troubleshooting Diagnostics

Solar Battery Stops Charging at 90 Percent: BMS vs Setting Decision Tree

Solar

Troubleshooting Diagnostics

Battery SOC Stuck at 100% But House Still Pulls From Grid

Solar

Troubleshooting Diagnostics

Battery Not Charging On New Install Commissioning Mode vs SOC Cap vs Comm Decision Tree

Solar

Troubleshooting Equipment

PV Battery Discharges Too Fast vs SOC Stuck Decision Tree

Solar

Troubleshooting Diagnostics

Battery Backup Does Not Island During an Outage: Decision Tree

Solar

Troubleshooting Diagnostics

Array Underperforms Only After a Roof-Mounted AC Unit Was Added

Solar

Troubleshooting Diagnostics

Solar Array Produces On Test Load But Not Exporting: Bypass vs Normal Decision Tree

Solar

Troubleshooting Safety

PV Arc Fault Trip Recurring After Clear Decision Tree

Solar

Troubleshooting Diagnostics

Solar Arc-Fault Recurs Only in Wet Weather: Decision Tree

Solar

Reference Process

Roof Replace - Before, During, or After Solar Decision Tree

Solar

Reference Equipment

Ladder + Scaffold Safety Reference

HVAC · Roofing · Painting · Gutters · Chimney Sweep · Garage Door · Solar

SOP Process

Residential Solar PV Installation SOP

Solar

SOP ServiceDelivery

Inverter Fault Service Call

Solar