The States Property Unit said the timings of some lights had been affected while the school’s main building management system was being replaced, as part of a wider programme of works.
‘The lighting controls connect to that BMS, and during the changeover the lighting timings defaulted to an interim setting that kept them on, as we did not have full control of the system while this work was carried out,’ said Justin Diamond, head of operations at the States Property Unit.
The lighting control system, which was replaced earlier this year, has now been reconnected to the building management system and the correct timings are back in place.
It is the second time the school’s lights have been in the spotlight this year.
In February, the unit said the external lights, which had stayed on all day and night for more than a year, could finally be switched off when not needed. The old system, which was at the end of its life, could not control each lighting zone individually.
Mr Diamond said the perimeter lighting was controlled in several ways, including movement sensors, timers and daylight sensors.
‘On public routes, some lighting deliberately comes on earlier and stays on longer than people might expect,’ he said.
‘This is a considered safety measure to make sure these areas are well lit whenever they are in use.’
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