BFS-208 100 gpd Reef/Residential RO/DI System Won't Stop/Shut Off

[Rychek]

I purchased this BFS-208 100 gpd Reef/Residential RO/DI System a few years back and it has been great. It used to be (when I lived in an apartment) that I could leave the source water on and it would shut off on its own when the pressure tank filled. Now that I'm in a house, however, it will run all day and all night and never stop. I don't have any water leaks and my pressure gauge (came on the unit) reads ~62 psi. Is the psi too high (input psi was ~40-45 in my apartment when it used to shut off)? Do I need to adjust something? I run a sediment filter and carbon block before the RO membrane. The unit is attached to a sink faucet and the ice maker on my refrigerator.

Thanks!

[Rychek]

After a little reading in the Buckeye FAQ, it appears my pressure is currently in the expected zone. My filters need to be replaced as my house pressure is closer to 80 than 60 psi, so I've ordered new sediment and carbon filters. However, even when the current filter cartridges were new the unit wouldn't shut off in this house. Can the 3.5 gal storage tank go bad in some way? Could the refrigerator be causing some sort of pressure issue that prevents the unit from shutting off?

[ErikH]

Sounds like a bad auto shutoff valve.

[BuckeyeHydro]

Pressure tanks often don't last more tthan several years - but that's probably not your issue.

Either you have a leak somewhere (faucet, DI output, or check valve), or a bad auto shut off valve.

Russ