Samuel

Sorry for hijacking this thread but I am also having a similar problem with a 3KVA hybrid MUST inverter. What's interesting is that whenever I load the inverter to the main house consumer unit, with all the breakers off except for the lighting and all the lights On, the inverter is working just fine. But as soon as I switch On the sockets breaker the inverter throws up error #3 (Battery voltage too high) and shuts down for few seconds and then On again. This results in On/Off of the inverter until I switch off the sockets breaker. After installation the system was working just fine for close to five months after which it started malfunctioning. But when I load the inverter directly, e.g. by connecting a heavy load like 1800w heater directly to the output terminals, the inverter works just fine. This leaves me confused if its the inverter faulty or if there is something wrong with the socket wiring. Anyone with an idea of what could be wrong I will really appreciate.