download the pdf manual from LEE69 on here, and have a look at the oil pressure section. It says that an audible alarm should sound at engine speeds above 1500rpm as while as the light being lit/flashing as a warning not to drive it! So if that was happening the mechanic shouldn't have even driven it. Plus surely the oil light must be red not amber, or are the LCR lights different from my LC180?

why is there a light on then maybe i should run it the dig machine and see if there's any faults