The previous owner of our Dolphin had the bedroom slide switch go bad, stick on, and he said held the slide motor on till it burnt out. Some time later, we had the other slide not function and
it turned out the other slide switch went bad or "open" internally. I ordered another switch on line using the numbers on the switch. It snaps out of the panel from behind.
It's was C1522AR Rocker Switch Momentary on/off SPDT
They seem harder to find now, see Ebay example :
https://www.ebay.com/itm/ARCOELECTRI...-/333126969055
A electronics part supplier may have cross reference part numbers for new ones.
I hope this is some help, good luck.