Wiring:The iWave-R features a patented universal voltage 24VAC to 240VAC enter functionality. The black wire (marked ‘AC’ on label) is for 24VAC to 240VAC voltage enter. The white wire (marked ‘N’ to the label) may be the neutral leg for 24VAC or 120VAC; or one other warm leg for 208/240VAC.Entry denied Mistake code 1020 You can't obtain .