I was standing by my spa while running, all of a all of a sudden the spa stopped running, upon diagnosing the problem I found three things 1) pump was leaking, replaced it. 2) heater cord from the interface module to the control pack was burnt p, replaced it. 3) Weak Contactor coil, replace Contactor. Started the system up, the auto fill valve filled the tub to the proper water level and the pump did not start, checked the vac in the pump cord and found only 42 vac, the pump is 115 vac, Contactor is new with a 120 vac coil. I’m at a lost on the pump cord vac.