Our water heater was acting finicky a few months ago so we called the manufacturer and they sent us a new/replacement kit for the Invensys WIPER Electronic Control & FV Sensor. We replaced the sensor and today (July 31) our water heater began acting up again - not producing hot water. We reset the heater, unplugged the heater and plugged it back in, etc. I've tried twisting the dial 6 times at 120 degrees light the manufacturer told me to do. The pilot light is not lighting and I'm not really sure what else to do. Our water heater is natural gas with the vent/fan on top. I can't really afford to call a technician out, can anyone help!