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pure sine wave inverter

March 27, 2021, 03:06:25 pm

This is for any who may have it happen to them. When I replaced the refrigerator 2 yrs ago with a residential unit, I also installed a 1500 Watt PSW inverter dedicated to the refrigerator. They both have worked flawless since install. Took the coach out of storage this past weekend and began testing systems. All is well with the fridge. On Friday, I noticed the freezer was at 53 degrees, had been at 0. I had lost power to fridge. I pushed the power button on the back side of the inverter, a buzzer sounded and it showed it was in fault/protect mode. Called tech support and they will have a tech call back ASAP. Still waiting. Decided to try something different. I threw the circuit breaker from battery to inverter. Still showed 13 V. I disconnected the supply lines, still 12.5 V. I hoped there was a capacitor involved here. I pushed the power button, buzzer sounded for a couple of seconds then nothing. Showed 3.2 V across the terminals. Rehooked the power supply, threw the breaker on and pushed the power button. SUCCESS. I was hoping it had an auto reset if drained down.

I know this isn't major but hope it might help someone down the line.
Larry

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Re: pure sine wave inverter

Reply #1 – March 27, 2021, 03:51:45 pm

What was the refrigerator brand and model? I had a similar issue hooked to my power and ordered a circuit board and one other part that I can't remember at this time as they were the most likely causing the shut down. When I cut power to it I remembered I wanted to voltage check something so powered it back up and it has been -4 on the freezer and 34 on the refrigerator ever since, going on 2 months now. I am carrying the parts just in case it happens again and a reset doesn't fix it. Mine is a Frigidaire 22 cu.ft.

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Re: pure sine wave inverter

Reply #2 – March 27, 2021, 07:19:36 pm

Chuck, it  is a 10 cu. ft. Haier from Home Depot. It was nearly a perfect fit for the original opening.

Larry

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Re: pure sine wave inverter

Reply #3 – March 29, 2021, 05:18:17 pm

UPDATE!! The inverter stayed on for 2 days then faulted out again. Tried to reset again as before, no bueno. Called Power tech on and talked to the tech. He said to check the 3 fuses located inside. All good. Long story short, ordered a new inverter so I don't have to worry about it.


Larry

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