Bit late to the thread so apologies, but a few years back we did have issues on our G3 RSC (YF10C). They would be tested with a meter successfully pre-install, tested in situ successfully, then commissioned and handed over successfully. Yet a random period later, they have gone into tamper (usually at 3am). Cue phone calls to us, site visits (150 separate loading bays in large Distribution Depot) to inspect but no visible damage and RSC working perfectly well leading to much scratching of heads.
Turned out that some of the concrete bays were steel reinforced (buried in concrete so not visible) and the Magnetic Interference Detection was being triggered due to natural variations in the magnetic field. This led to the design, manufacture and supply of the 10mm thick rubber spacer in the video below. This has alleviated every instance of this problem.