Essentials photocell /timer feature not working, only On/Off. It happened when adding a 2W pathlight to the circuit. there is plenty of capacity. Called customer service who is sending replacement photocell/timer, however it's for the Slimline series transformer, not the Essentials. Seeking advice on repair vs replacement. Just bought the transformer, fixtures and bulbs in September. Checked lines for faults/shorts, none found yet.