330 Holding tank discharge

[bfr44]

Well decided to check out all the systems on the boat after the marina did the in service. Found I couldn't get the holding tank discharge to run. Switches to the head are on, breaker for holding tank discharge is on, and I toggle the key switch on the afte wall in the head to run and nothing happens. Light indacator is on 1/2 full, and valve is open . I dont hear the pump run, it doesn't draw any power, no light dimming. What am I missing?

 

[g0tagrip]

Thru hull open? Discharge switch on the electrical panel must also be on.

 

[bfr44]

Yes on both

 

[alfa1023]

Never had this problem on my 330, but back when I had my Sailfish, holding tank indicator showed full but attempts to discharge via pump and even marina pump out station yielded nothing. Finally bit the bullet and pulled everything apart - the float switch in the holding tank had come apart and was stuck in the up (full) position when in fact the tank was actually empty.

Don't know if the 330 uses the same setup as my old Sailfish, but guess it could be something like that. Can you get your eyeballs on the holding tank to see how full it really is? Or do you have a marina close by that could pump it out for you (to confirm the volume in your tank)?

 

[g0tagrip]

After trying what alfa1023 recommends, try flushing the holding tank while at the marina and sucking it out. One time I had a visiting niece throw a tampon into the head and had to flush the holding tank at the marina to unclog it. Once in awhile I have to hold the key in the start position to get the pump to come on. You could try that, when you do does the green lite on the discharge indicator come on?

 

[bfr44]

Thanks for the help, no the h
Green light doesn't come on. I have held the key over for 15 sec or so and still nothing. I flushed some water in it so I know there is was waste in it

 

[bfr44]

I'm thinking g it must be a relay or a fuse some where between the key switch and the pump. Any thoughts, or does anyone know if in fact there is a fuse there some where?