inputs.text: 1200 watt paper weight - used 1200 watt grid tie inverter 24 volt solar power systehem directly connected 24 volt batteries grid worked good first couple hours operation began cycle attribute overheating thus placed fan additional cooling 14 hours total operation determined power monitor connected failed user manual conveniently indicated repair unit fail ordered parts paid prehemium discontinued however unit immediately failed would not recommend product customer support tried assist without success returning product repair nickel adds sunk cost