Describe the fault.
Share the brand and model, any visible error code, when the issue occurs and your municipality. Do not open equipment or an electrical cabinet to find details. An accessible rating plate or service document may provide enough information.
Solar and hot-water service.
For solar panels, discuss inspection, diagnosis, cleaning and basic service. For HVAC or hot water, describe the installation and requested scope. Statutory inspections and specialist tasks are not represented as included without assessment.