called to customer with "air lock " in new system installed last week. Turned on c/h -rads not heating up on bottom floor-turn all rads off upstairs & all rads on upstairs. Pump on 2 (why not 3-dont know) pump bled as it was making noises & very hot. checked power to & from pump, boiler etc. then all electrics failed-no power to boiler, controls, pump. RDC also tripped. Any suggestions as to why this happened?