Re: 20 RI-D3SF w/pool
Had one do the same a few weeks ago and had to fit a new filter holder.
The original was held together with two metal spring clips but it would seem that one was missing when the appliance was assembled and the factory had bodged it with some sticky tape!
The replacement was different assembly with twist and lock fitting and a better fit.
Repair bill was into three figs so customer not best pleased and I left him taking photographs for his complaint letter to Whirlpool.
Steve