Sent the following to MPP Solar, has anyone else had this problem with the PIP-5048GK? No idea what caused it.
Regarding the PIP-5048GK that I bought last year, the unit is no longer working:
Regarding the PIP-5048GK that I bought last year, the unit is no longer working:
- It's only been used for perhaps 100 or 200 hours since I bought it (it's just for back up power. Most of those hours were for testing the battery).
- It's unable to supply AC from the battery - it comes up with error 51.
- I tried disconnecting the battery and restarting the unit several times but no luck.
- Supplies AC when powered from mains, but when battery is connected it stops powering and reports error 51.
- Solar input has never been used.
- Batteries are fine, well connected.
- I did connect the batteries perhaps 100 times in total without using a resistor first, suddenly charging the caps up with a slight pop in the DC breaker. Wouldn't have thought that would matter too much though.
- It's been left unplugged from the wall, so I don't see how a surge in the mains could get to it. Other small plugpacks are close by and are fine.
- The only AC load is ~1 watt for red lights inside power boards.
- I noticed it briefly showed the battery voltage at ~38V, even though my own battery meter didn't budge. Then, it showed 53.1V.
- My own battery volt meter never showed and sudden dip; only what you'd expect from the unit pulling its overhead load.
- Battery is 48v 150ah lifepo4.
- I used it a month or three ago no problem. I've got no idea what's happened/failed between then and now.
- Ever since I first used it, sometimes when starting up, it will begin its countdown, get down to 2 and then suddenly die (screen goes blank and dark). I would restart it (using its on/off push switch and reconnecting the battery if it didn't respond) and it would usually work. Sometimes it would die again and I would reset it again, until it worked. The whole thing would take less than a minute to get running. Once it was running it never played up so I didn't worry about it. I'm not sure if this offers any diagnostic clues.