Shower sump pump switch failing

[Dr. D]

My 35.1 has the shower stall option. The switch controlling the shower sump pump has a timer function. When it is working normally, one presses and releases a button and the pump runs for about two minutes. It appears the switch (or what it is connect to) is failing. Yesterday I pressed the button and after five minutes I had to disconnect the house battery bank to turn the pump off.

Anyone else have this problem? What part is behind the bulkhead controlling the timing? How do you access it?

 

[Davidasailor26]

Not sure how it’s wired on the 35.1 series. On the 37 (the previous generation) they just had a momentary push button for the sump pump. Our button broke and we changed it to a plain on/off lever switch so we can just run it when we need to.

 

[Dr. D]

Turns out there is a relay which controls the timing of the pump (it should only be on for 15 seconds) . I have the replacement relay. But where the heck is the original relay located??!!??

 

[Dr. D]

OK, found the delay relay and replaced it. It is located with the sump pump behind an access panel in the lazarette. Pics show the panel open, what is behind it, and the position one must assume to replace the relay. Curiously, there is a 110 V outlet in the outlet below the shelf; it is functional.