Question about Watts Cobra Cpi1575 1500w 1500 Watt Power Inverter

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I have a Cobra 1500W power inverter. The alarm is going off when the inverter is shut off. I drive a truck and have unplugged all appliances from the inverter and the alarm is still going off. What

This just happened. I shut my truck off and turned off the inverter during my home time so I don't kill the truck battery. Suddenly when the inverter was shut off and the three small appliances were unplugged from the inverter, the alarm still went off. When I power up the inverter, with the appliances plugged in, the alarm stops.

Posted by JD Wills on

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David Tickner

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I can only give some general thoughts on this, I have patched up a few inverters.
Their core parts rely on a component called capacitors these over time degrade with heat which reduces their manufactured value this will mean they fail to fully do their job. The usual result is not providing a smooth supply rail allowing voltage spikes which trip over and under voltage sensing firing off the alarm, more so when not loaded with appliances as spikes can become large.
Your appliances would be snubbing out these through their loading but this can be trouble because they are absorbing this extra energy which may damage them eventually.
This situation will possibly get worse with the inverter failing, it will need a service engineer to work on it or to purchase a new one if there is no local regional repair place.
Look up faulty capacitors in power supplies on the web for an insight.

Hope this helps........

Posted on Oct 30, 2017

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