The load is not suitable for operation on an inverter with modified sine wave, e.g. coffee machine. Please contact the manufacturer of the load for more information. - The starting current of the load is too high, especially with electric motors. - Inverters with pure sine wave are recommended for continuous operation. - Power of the consumer is too high, observe max. continuous power according to operating instructions! - Inverters with modified sine are not suitable for continuous operation. - There is not enough battery capacity available. Inverter switches off. Recharge battery. - Inverter has switched off due to overheating. Provide sufficient ventilation or cooling.