D
David LandrySep 6, 2025
How to fix fail-safe error on Pentair Water Filtration System?
- DDr. Jacqueline TownsendSep 6, 2025
To address a fail-safe error on your Pentair Water Filtration System, unplug the unit and then plug it back in.
To Next PageTo Next PageHow to fix fail-safe error on Pentair Water Filtration System?
To address a fail-safe error on your Pentair Water Filtration System, unplug the unit and then plug it back in.
How to reset regeneration failure on Pentair Water Filtration System?
To reset a regeneration failure on your Pentair Water Filtration System, perform a manual regeneration.
Why does my Pentair Control Unit water softener fail to regenerate automatically?
If your Pentair Control Unit softener fails to regenerate automatically, ensure it's connected to a constant power source. Check the meter cable for disconnections or faults, reconnecting or replacing it as needed. If the power cord is defective, replace it. Also, examine the controller, meter, or sensor for defects and replace or repair them. Finally, verify that the unit is programmed correctly.
What to do if my Pentair Water Filtration System has excessive water in the brine tank and/or salty water to service?
If you notice excessive water in the brine tank or salty water being delivered, there might be a plugged drain line. Check the flow to the drain and clean the flow control. Another possible cause is a dirty or damaged brine valve, which should be cleaned or replaced. Also, inspect the injector for any blockages; clean the injector and replace the screen if necessary. Ensure that the inlet pressure is at least 1.4 bar to allow the injector to function correctly. Finally, if the timer isn't cycling, consider replacing the controller.
Why does my Pentair Water Filtration System have a loss of water pressure?
A loss of water pressure in your Pentair Water Filtration System can occur due to scaling or fouling of the inlet pipe. Clean or replace the pipeline and consider pretreatment to prevent future occurrences. Fouled resin can also cause this issue; clean the resin and pretreat to prevent it from happening again.
What causes poor water quality in my Pentair Water Filtration System?
Poor water quality from your Pentair Water Filtration System may be due to an open bypass valve; ensure it is closed. Channeling can also cause this, so check for service flow that is either too slow or too high, and inspect for media fouling. Finally, verify that the mixing is set correctly.
What to do if there is excessive water in the brine tank of my Pentair Control Unit?
To address excessive water in the brine tank or salty water to service from your Pentair Control Unit, start by checking the flow to the drain and clean the flow control if plugged. Also, inspect the brine valve for dirt or damage, cleaning or replacing it as necessary. Additionally, clean the injector and replace the screen if it's plugged. Ensure the inlet pressure is at least 1.4 bar for proper injector performance, and if the timer isn't cycling, consider replacing the controller.
What causes continuous flow to drain in Pentair Water Filtration System?
Continuous flow to the drain in your Pentair Water Filtration System can be caused by a motor that stopped or jammed during regeneration, in which case you should replace the motor.
What to do if Pentair Water Filtration System valve cycles continuously?
If the valve of your Pentair Water Filtration System is cycling continuously, the controller may be faulty. In this case, replace the controller.
What to do if my Pentair Water Filtration System is regenerating at the wrong time?
If your Pentair Water Filtration System is regenerating at the wrong time, it could be that the timer is improperly set due to a power failure. Reset the controller.
General| Brand | Pentair |
|---|---|
| Model | Fleck 5800 LXT |
| Type | Water Softener Control Valve |
| Control Head | Electronic |
| Valve Material | Noryl |
| Capacity | 48, 000 grains |
| Metered | Yes |
| Brine Line | 3/8" |
| Display | LCD |
| Operating Pressure | 20 - 125 psi |
| Operating Temperature | 34 - 120 °F |
| Inlet/Outlet | 1" |
| Drain Line | 1/2" |
| Backwash Capacity | 17 GPM |
| Backwash Flow Rate | 17 GPM |
| Regeneration Type | Demand Initiated |
| Cycle Times | Variable |
| Brine Draw Flow Rate | 0.5 GPM |
| Programming Options | Regeneration cycle sequence, cycle times, salt dosage, reserve capacity, calendar override |
