I have a GE 4.5cu ft front load Energy Star washing machine. I am constantly draining and cleaning the filter/pump. I’ve had this one for a year. The one I had before I had for about 8 years and never had to drain the pump. It frustrating to go and change out clothes and they either aren’t washed or soaking wet still.
I have a newer front loader also and yes the filter is much finer than my previous one, we started cleaning the filter with each new jug of laundry detergent, since doing that we have not had the error. So I would try a regular schedule of cleaning, it is much easier to do when the machine is not full of water. Once a week sounds a funny are you using the proper type of detergent? The high efficiency type. Your screen may be getting plugged with fillers that some detergents use.