HI I'M MARGYC JUST REGISTERED I HAVE A SMALLHOLDING IN THE NORTH OF ENGLAND WITH GOATS GEESE AND HENS. I HAVE DECIDED FOR THE FIRST TIME TO USE AN INCUBATOR TO HATCH SOME EGGS BUT THE BULB HASN'T LIT UP DESPITE BEING ON FOR 9 HOURS! the instructions are neither use nor ornament! I HAVE CHANGED THE BULB CAN ANY BODY SHED ANY LIGHT (HAHAHAHA) on this for me.
I am assuming that you have a wafer thermostat. That being assumed, have you turned the key clockwise? Try doing that until the wafer engages the switch (little button) and you should hear a small click as the thermostat switches on. If your light doesn't come on then it may be a connection in the wiring. Is this a new bator?