We have a 25 yr old plaster pool with attached spa. The spa has an in ground ( attached pic) control that could filter spa , turn on heat, turn on blowers. Turning on and off blower was ideal . There is also a panel in the house that could do the same. Neither has worked for about 8 yrs. options at that time were to update panel at pool equipment, without a gaurantee that controllers would work. Any idea what the options are now and costs? Thanks!