Technical fault database
Know the fault. Know what to do next.
Search verified error codes, warning lights and troubleshooting guides for solar inverters, EV chargers, home batteries and heat pumps.
90
Fault codes
33
Manufacturers
24
Symptom guides
Solar Inverters
Grid faults, battery errors and inverter warnings.
Browse faultsEV Chargers
Charging errors, warning lights and connectivity problems.
Browse faultsHome Batteries
Battery, BMS, gateway and communication faults.
Browse faultsHeat Pumps
Model-specific heat pump and mini-split error codes.
Browse faultsRecently verified faults
Codes most recently reviewed against a manufacturer document.
Growatt
Meaning pending official confirmation
Daikin
Meaning pending official confirmation
Solis
Meaning pending official confirmation
Tesla · Wall Connector
Meaning pending official confirmation
ChargePoint · Home Flex
Meaning pending official confirmation
Fronius
Meaning pending official confirmation
Mitsubishi Electric
Meaning pending official confirmation
GoodWe
Meaning pending official confirmation
Browse by manufacturer
Brand hubs list every code we track, grouped by product family.
Know the symptom, but not the code?
Start from what the device is doing and work back to the fault code.
Built around verified technical sources
Model-specific
Fault meanings are mapped to compatible models where possible.
Source-backed
Technical information is tied to manufacturer documentation.
Safety-first
User-safe checks are separated from technician-only actions.