09-08-2017, 05:30 AM
Marc, a new transfer switch every 10 months , calculates to perhaps 30 operations of the device before failure. Most of these contactors are rated for 500000 operations. Have you checked the voltage being applied to the coils of the contactors to make them operate ? Perhaps the control, ( Coil input) voltage is marginal.
Guy & Sue Cobham
Sioux Falls, South Dakota
1984 Classic 40' #59