Dell 1920W (Tower) UPS set up of Boost Function. (Reposted as last one was removed...)

Hello

I have brought a Dell 1920W (tower) to support my Alienware Area 51 as the power in my area fluctuates too much dropping it out.

I've upgraded the Firmware to the latest version and am running the latest Node software.

If I remove the plug from the UPS the output voltage flicks to 240 volts (I've set this amount) and the Area 51 and screen does not miss a beat. It's perfect.

Now for the issue:

The output voltage follows the input voltage, so if the input drops inset of the UPS keeping the output at the set point it does nothing. So when the input volts drop to less than 220 the Area 51 drops out. It's taken two hard drives out so far and I loosing a lot of work and time.

The boost function in the manual clearly states that when boost mode is set the output will be held at the set point without switching to battery mode.

I've attached a screen shot of the logged voltage lines. You can clearly see the two times I remove the plug and the input drops to zero while the output flicks to 240 volts.

Then you can see the input and output voltage follow each other right down to 220 volts.

The blue line is input voltage the brown line is the output voltage.

I hope you can help.

Thanks Tackturbo