Only just dropped in on this query of yours. First simple test, the Chromegatrol will run without the six bladed head plug in it's socket, try this and if this does not trip the switch then your problem is in the head. if the switch is tripped then it's in the Chromegatrol setup. If it's the head get a professional to check the wiring as it does some loop back type stuff.
If it's in the control/transformer then google "ask harry" and follow his advice.