Using a pump with RO system

[AndrewPyle]

We bought an RO system and had a plumber install it with a holding tank and pump as we are taking it from the filter in the basement up to the kitchen on the main floor. Things seemed ok, but the pump would run longer and longer and eventually we had a plumber look at it. He said the tank was full and probably needed to be air charged or the bladder was gone. We did that and still had the problem so bought a new tank. Now the pump runs continuously. So at this point we don't know if the pump is faulty or there is a problem with the RO. Both were bought only 3 years ago

[judith97]

We bought an RO system and had a plumber install it with a holding tank and pump as we are taking it from the filter in the basement up to the kitchen on the main floor. Things seemed ok, but the pump would run longer and longer and eventually we had a plumber look at it. He said the tank was full and probably needed to be air charged or the bladder was gone. We did that and still had the problem so bought a new tank. Now the pump runs continuously. So at this point we don't know if the pump is faulty or there is a problem with the RO. Both were bought only 3 years ago

It sounds frustrating to deal with an issue like this after putting in a new tank. Based on what you’ve described, it could be either a faulty pump or an issue with the RO system not reaching the right pressure to shut off the pump. Sometimes, if there’s a small leak or the RO membrane is clogged, the system won’t build enough pressure, causing the pump to keep running. Since you already replaced the tank, I’d probably test the pressure in the RO system itself or check the pump for any issues with the pressure switch. It might also be worth checking all the connections for any leaks.