I have a problem with one of the Magnum RD2624E. It shows ac input voltage too high and yet we installed a voltage monitor which cannot allow more than 260V to reach the inverter. I have measured the voltage three times (whenever the fault has occurred and found it to be 235 volts) Is there a way to adjust the maximum allowable voltage?

In by emily

The question about the RD2624E might be software. Software version 4.2 had the high Vac input at 260 Vac. In 2011 Magnum changed to V5.4 which raised the  high Vac input to 275 Vac. For some reason the RD2624E was the only unit with the lower Vac input setting. Once the “High Vac Fault” is registered AC has to be removed before it will reset. So in this case the voltage probably did hit 260 Vac and registered the fault but when it was measured it was lower but would not reset until ac is removed and reapplied to the unit.