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Autotrol 255-460i - User Manual

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Water Conditioning Control System
Installation, Operation and Maintenance Manual
Series 255 Valve / 460i

Questions and Answers

  • K
    Katherine BerrySep 12, 2025
    What does it mean if Autotrol 255-460i time display shows gibberish?
    • B
      brett30Sep 12, 2025
      If your Autotrol Control Unit shows something other than the time of day, it could be due to electrical interference. Try disconnecting power to the unit, then restore power and reset the time of day display. If the issue persists, it might be a defective circuit board, which would require replacing the timer.
  • T
    thomasharrisAug 23, 2025
    Why is my Autotrol 255-460i timer stalled in regeneration cycle?
    • A
      Adam WelchAug 23, 2025
      If the Autotrol Control Unit timer is stalled in the regeneration cycle, several issues could be at fault. The motor may be dead or running backward, necessitating a timer replacement. A lack of electrical power at the outlet requires repairing the outlet or using a working one. A broken gear or defective switch also calls for a timer replacement. Additionally, air leaks in brine connections should be checked and corrected at all junction points. Binding of the camshaft may occur due to foreign object obstruction from valve discs or the camshaft, which needs to be removed. High water pressure during regeneration (greater than 25 psi) requires installing a pressure regulator. Finally, a defective circuit board also requires a timer replacement.
  • L
    lperezAug 25, 2025
    What causes Autotrol 255-460i Control Unit to not draw brine?
    • M
      Mark WelchAug 25, 2025
      If your Autotrol Control Unit is not drawing brine, it could be due to several reasons. Low water pressure can be resolved by making the correct setting according to the instructions. A restricted drain line needs the restriction removed. A plugged injector requires cleaning the injector and screen. If the injector is defective, replace the injector and cap. If valve disc 2 and/or 3 are not closed, remove any foreign matter from the disc and check the disc for closing by pushing in on the stem, replacing if needed. Lastly, if the air check valve is prematurely closed, put the control momentarily into brine refill and replace or repair the air check if needed.
  • M
    Melinda MorganAug 26, 2025
    Why does Autotrol 255-460i Control Unit regenerate at wrong time of day?
    • D
      Darrell EstradaAug 27, 2025
      If your Autotrol Control Unit regenerates at the wrong time of day, it could be due to power outages or an incorrectly set clock. In either case, reset the clock to the correct time of day.
  • J
    Jennifer AndersonAug 28, 2025
    What to do if Autotrol Control Unit will not regenerate at all?
    • M
      Mrs. Karen Clark DDSAug 28, 2025
      If your Autotrol Control Unit won't regenerate automatically or when you press the button, start by checking if the electric cord or transformer is unplugged and connect the power if needed. Also, ensure there's electric power at the outlet; if not, repair the outlet or use a working one. If those aren't the issue, the problem could stem from a defective motor, broken gear, binding in the gear train or a defective switch, all of which would require replacing the timer.
  • S
    Stephanie LeeSep 1, 2025
    How to fix Autotrol 255-460i Control Unit when clock does not display time of day?
    • B
      bgravesSep 1, 2025
      If the time display on your Autotrol Control Unit doesn't show the time of day, first check if the transformer cord is unplugged and connect the power if necessary. If that's not the issue, ensure there's electric power at the outlet; if not, repair the outlet or use a working one. If the problem persists, the transformer might be defective, requiring a replacement. As a last resort, a defective circuit board may be the cause, which means replacing the timer.
  • E
    elopezDec 1, 2025
    Why do I run out of soft water between regenerations with Autotrol 255-460i?
    • E
      Elizabeth WuDec 1, 2025
      If you run out of soft water between regenerations with your Autotrol Control Unit, it might be due to several reasons. First, try repeating the regeneration, ensuring you use the correct salt dosage. Fouled softener resin can be addressed with a resin cleaner. An incorrect salt setting should be adjusted to the proper level using the salt setting chart. Also, verify and correct the hardness or capacity settings, referring to the Programming section. If the water hardness has increased, set the hardness to the new value, again consulting the Programming section. Restricted meter turbine rotation due to foreign material in the meter requires removing the meter housing, freeing up the turbine, and flushing with clean water; replace the meter if the turbine doesn't spin freely. Lastly, excess...
  • A
    Ann MatthewsDec 1, 2025
    What causes brine tank overflow in Autotrol Control Unit?
    • M
      Michael BrownDec 1, 2025
      If the Autotrol Control Unit has a brine tank overflow, it could be due to several reasons. The brine valve disc 1 might be held open by foreign matter, which can be resolved by manually operating the valve stem to flush away the obstruction. An uncontrolled brine refill flow rate requires removing the variable salt controller to clean it and the ball. If valve disc 2 is not closed during brine draw, causing brine refill, flush out any foreign matter holding the disc open by manually operating the valve stem. An air leak in the brine line to the air check needs checking all connections in the brine line for leaks, referring to the instructions. An improper drain control for the injector, such as too small of a drain control with a 'B' or 'C' injector, will reduce draw rates (reference Pres...
  • J
    James RamirezSep 12, 2025
    Why Autotrol 255-460i has no conditioned water after regeneration?
    • W
      William BrennanSep 12, 2025
      If you have no conditioned water after regeneration with your Autotrol Control Unit, first check for power to ensure the unit regenerated. If there's power, make sure there's salt in the brine tank and add salt if needed. A plugged injector can also cause this issue, so remove the injector and flush it and the injector screen. Lastly, an air check valve closed prematurely can be resolved by putting the control momentarily into refill to free the air check; replace or repair the air check if needed, referring to the Instructions.
  • S
    Scott BakerSep 7, 2025
    How to fix Autotrol Control Unit when clock displays wrong time?
    • S
      Sonya YoungSep 8, 2025
      If your Autotrol Control Unit clock doesn't display the correct time of day, check if the outlet is operated by a switch and use an outlet not controlled by a switch. Also, verify that you're using the correct voltage and frequency (Hz); if not, replace the timer with one of the correct voltage and frequency. Finally, power outages can cause this issue, so try resetting the clock.

Summary

Introduction to Series 255;460 i Water Conditioner

Series 255;460 i System Overview

Describes the system's design simplicity and reliability.

Operation and Programming Procedures

Programming the 460 i Controller

Setting time, hardness, capacity, and calendar override.

Regeneration and Brine Control Adjustment

Manual Regeneration Cycle Execution

Detailed manual steps to initiate and control regeneration cycles.

Servicing and Technical Specifications

Control Module Removal for Servicing

Step-by-step guide for safely removing the control module.

Maintenance and Troubleshooting Guide

Troubleshooting Common System Issues

A guide to diagnosing and resolving system issues.

Autotrol 255-460i Specifications

General IconGeneral
BrandAutotrol
Model255-460i
CategoryControl Unit
LanguageEnglish

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