mohfamous wrote: ↑
Tue, 19 Jun 2018, 16:25
My PIP4048 shows on the LCD error 57
It seems that there is a test at startup to check for DC offsets in any of these:
* The current transformer measuring load current
* The hall effect sensor measuring inverter output current
* The current sharing sensor, presumably only if your machine is paralleled with others (not a single machine, or 3 machines in 3-phase).
Instantaneous current is averaged over some time period, and if the result for any of the three measurements is greater than 100 (which might represent 10 .0 A or possibly 1.00 A), then fault code 57 (error 57) will be set.
Hall effect devices are notorious for drifting, and being sensitive to stray magnetic fields, even being magnetised themselves. If your warranty has expired, you could possibly try demagnetising it; it's the blue part outlined in red below:
Back in the days of magnetic tape recorders, there used to be a thing called a demagnetising wand. I believe that I still have one, and it seems you can still get them from Ebay or similar. You move the tip of the demagnetiser close to the device to be demagnetised, then move it slowly
away. The idea is to create smaller and smaller magnetising loops in the magnetisable material, until the residual magnetism is near to zero. You may have to move it all around such a large device, and/or try a few times. Test by powering up the inverter from off. If that doesn't work, replace the part. If you're not prepared to try this, have the inverter repaired. I've never had this error, so I've never tried this remedy.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.