Pentair Autotrol Performa 400 Series

Questions and Answers

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Shannon MaddoxSep 10, 2025
Why is the timer on my Pentair Control Unit stalled in the regeneration cycle?
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  higginsjasonSep 10, 2025
  If the timer on your Pentair Control Unit is stalled in the regeneration cycle, several issues could be the cause. The motor might be dead or running backward, a gear could be broken, the switch might be defective, or the circuit board could be defective, in all of these cases replace the timer. There might be no electric power at the outlet, so repair the outlet or use a working outlet. There might be an air leak in the brine connections, so check all junction points and make appropriate corrections. The camshaft might be binding, so remove any foreign object obstruction from the valve discs or camshaft. Finally, the water pressure might be greater than 125 psi during regeneration, so install a pressure regulator.
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laurieatkinsAug 23, 2025
Why is my Pentair Control Unit not drawing brine?
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  transamuelAug 23, 2025
  If your Pentair Control Unit isn't drawing brine, several issues could be the cause. First, check for low water pressure and set the pump to maintain 30 psi at the conditioner. A restricted drain line could also be the problem; remove any restrictions. Additionally, the injector might be plugged; clean the injector and screen. If the injector is defective, replace it. Lastly, ensure valve (2 and/or 4) is closed; remove any foreign matter from the disc and check the disc for closing by pushing in on the stem, replacing it if needed.
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Maurice McdonaldAug 25, 2025
What to do if there is no conditioned water from my Pentair Control Unit after regeneration?
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  mark69Aug 25, 2025
  If you're not getting conditioned water after regeneration with your Pentair Control Unit, there might be a few reasons. First, check if the unit actually regenerated by checking for power. Another reason could be that there's no salt in the brine tank, so add salt. Lastly, the injector might be plugged; try cleaning the injector and flushing it with water.
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Jimmy StewartAug 26, 2025
How to fix a Pentair Control Unit that will not regenerate automatically?
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  Paige CohenAug 27, 2025
  If your Pentair Control Unit isn't regenerating automatically, there could be a few potential causes. First, check if the transformer or motor is not connected and connect the power. If that's not the issue, the timer motor might be defective, requiring replacement. Also, make sure the skipper pins are down on the timer skipper wheel for the days regeneration is required. Finally, there could be binding in the gear train of the timer, in which case you should replace the timer.
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kburnettAug 27, 2025
Why is my Pentair Autotrol Performa 400 Control Unit leaking hard water during service?
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  Daniel DuncanAug 27, 2025
  If you're experiencing hard water leakage during service with your Pentair Control Unit, it could be due to a few reasons. The regeneration might be improper, so repeat the regeneration, making certain that the correct salt dosage is set. There might be leaking of the bypass valve, in this case replace the o-ring. Finally, the o-ring around the riser tube might be damaged, so replace the o-ring.
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Jeffrey WellsDec 1, 2025
Why am I running out of soft water between regenerations with my Pentair Autotrol Performa 400 Control Unit?
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  Yolanda WilliamsDec 1, 2025
  If you're running out of soft water between regenerations with your Pentair Control Unit, several factors could be the cause. The regeneration might be improper, so repeat it, making certain that the correct salt dosage is used. The softener resin might be fouled, so use a resin cleaner (though using resin cleaners in an unvented enclosure is not recommended). The salt setting could be incorrect, so set the salt control to the proper level. The harness or capacity settings might be incorrect, so set them to the correct values. Water hardness might have increased, so set the hardness to the new value. There might be restricted meter turbine rotation due to foreign material in the meter housing; remove the meter housing, free up the turbine, and flush with clean water. Do not disassemble the...
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mark75Sep 18, 2025
Why does the time display on my Pentair Control Unit continue to advance?
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  michaela58Sep 18, 2025
  If the time display on your Pentair Control Unit continues to advance, it could be that the time set switch is defective, so replace the timer.
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Vincent MendezSep 22, 2025
Why is there no water flow display when water is flowing on my Pentair Autotrol Performa 400?
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  Peter PearsonSep 22, 2025
  If there's no water flow display when water is flowing in your Pentair Control Unit (note that the 460TC has no meter), it could be due to several reasons. The bypass valve might be in the bypass position, so shift it to the not-in-bypass position. The meter probe might be disconnected or not fully connected to the meter housing, so fully insert the probe into the meter housing (460TC has no meter). There might be restricted meter turbine rotation due to foreign matter in the meter, so remove the meter housing, free up the turbine, and flush with clean water. Do not disassemble the turbine from the meter housing; the turbine should spin freely. If not, replace the meter. The meter probe or the circuit board might be defective, in both cases replace the timer.
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Carrie WellsSep 8, 2025
What to do if my Pentair Autotrol Performa 400 Control Unit will not regenerate automatically or when the button is pressed?
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  James WatsonSep 9, 2025
  If your Pentair Control Unit won't regenerate automatically or when the button is pressed, several issues could be at fault. The electric cord might be unplugged, so connect the power. There might be no electric power at the outlet, so repair the outlet or use a working outlet. The motor might be defective, so replace the timer. A gear might be broken, so replace the timer. There could be binding in the gear train, so replace the timer. Finally, the switch might be defective, so replace the timer.
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qjohnsonSep 5, 2025
What causes my Pentair Autotrol Performa 400 to backwash at an excessively low or high rate?
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  janetsummersSep 5, 2025
  If your Pentair Control Unit is backwashing at an excessively low or high rate, it could be due to a couple of reasons. An incorrect backwash controller might be in use, so replace it with the correct size controller. Foreign matter might be affecting the controller operation, so remove the controller and ball and flush with water.

Pentair Autotrol Performa 400 Series Specifications

General

Model Series	Performa 400 Series
Control Type	Electronic
Timer Type	Microprocessor-based
Operating Pressure	20 - 125 psi
Manufacturer	Pentair
Service Flow Rate	20 GPM
Operating Temperature	33-120°F
Valve Material	Noryl
Drain Line	1/2" ID
Brine Line	3/8"
Power Supply	Transformer
Electrical	24V AC, 50/60 Hz
Cycle Options	Backwash, Brine Draw, Slow Rinse, Refill
Display	LCD display
Backup Power	Battery backup
Compatibility	Water softeners, filters
Inlet/Outlet	1" NPT
Valve Port Size	1" NPT