16P states “An erroneously set clock should be handled in the same fashion as a defective clock” and 16O. Defective clocks. states “A player who wishes to claim any such defect must do so as soon as aware of it. A clock with an obvious defect should be replaced…”.
From this it seems fairly clear. The clock is not set correctly, therefore it should be fixed when noticed. No TD tip is needed, but the accompanying one in 16P backs this up.