Setup: Basement bathroom (toilet, sink, shower stall) connected to "Little Giant" sewage ejector pump system (partially buried basin and pump). 2" waste rises vertically from basin 6' then horizontally for 1' then check valve installed then another 2' until it empties into stack. Shower and Sink vents are tied together rising 42" and then fitted with a studor vent. Basin is also fitted with a studor vent – I know this is not ideal and the only reason I went this route is that venting up through roof would have been impossible without major interior construction - I can go through the side of the house then up which is what I plan on doing if I can't solve this problem.
Problem: After 12 months of flawless performance the float on the pump became stuck in the on position which cycled the pump continuously for appox. 10-15 minutes. I removed the lid, disslodged the float and cleaned the interior (yuck) and tested the unit with the lid slightly ajar making sure it operated. All was well until I closed the lid and tested the system. I am now having a venting problem (toilet flushes when pump engages, problem flushing toilet in that water does not go down etc.)
Question: I am guessing this must be a vent problem because when I remove the studor vent all operates normally. What I can't understand is why did everything work perfectly for twelve months using this venting method and then all of a sudden it doesn't work anymore? Any help or advice would be greatly appreciated.
Problem: After 12 months of flawless performance the float on the pump became stuck in the on position which cycled the pump continuously for appox. 10-15 minutes. I removed the lid, disslodged the float and cleaned the interior (yuck) and tested the unit with the lid slightly ajar making sure it operated. All was well until I closed the lid and tested the system. I am now having a venting problem (toilet flushes when pump engages, problem flushing toilet in that water does not go down etc.)
Question: I am guessing this must be a vent problem because when I remove the studor vent all operates normally. What I can't understand is why did everything work perfectly for twelve months using this venting method and then all of a sudden it doesn't work anymore? Any help or advice would be greatly appreciated.