Spring maintenance performed on Lennox RTU heat pump. Checked electrical and mechanical components, recorded refrigerant readings, and measured temperature split. Found burnt common wire from capacitor caused by faulty connection; corrected this issue and found no other discrepancies at the unit. Attempted to rinse the outdoor coil but found water leaking from inside the wall behind the water spigot. Informed the homeowner of findings and set system back off at thermostat. Maintenence is completed.