Boiler filled low level light never went out and heat light did not light up on board or front panel. Pulled probes. Cleaned LWCO. Light lit and high probe but not low probe. Shorted to ground at board. Still did not light. Will obtain board and return. 10-20-17 Disassembled machine to test water board. Found that the board was ordered is wrong. There is no model or serial # on unit. Customer is getting paperwork with model # on it. Will order correct board and return. no charge per service manager 10-25-17 Took out LWCO board and rewired with new board. Reassembled and powered on unit. Fill with water and allowed to heat and fill. Unit filled an heated. Unit boiled water. Elements have 13.5A draw. Back in service. After unit fills, cust must hit reset and hold for a couple sec when first starting. This is in unit directions.