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Fleck 7700 SXT - User Manual

Fleck 7700 SXT
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7700 SXT

Questions and Answers

  • M
    Morgan MendezAug 20, 2025
    What to do if Fleck Control Unit softener fails to regenerate?
    • A
      Aaron MasonAug 20, 2025
      If your Fleck Control Unit softener isn't regenerating, it might be due to a few reasons. First, ensure that the unit has permanent electrical service by checking the fuse, pull chain, or switch. If the timer isn't working correctly, consider replacing it. Also, check the programming and reset it if necessary.
  • A
    Andrew AndrewsAug 22, 2025
    Why Fleck Control Unit uses too much salt?
    • G
      Gabrielle JohnsonAug 23, 2025
      If your Fleck Control Unit is using too much salt, it could be due to an improper brine refill setting, so check the salt usage and salt setting. It might also be caused by excessive water in the brine tank. Improper programming could also be the reason, so check the programming and reset as needed.
  • W
    Wendy NicholsAug 26, 2025
    What to do if Fleck Control Unit has salted water in service line?
    • T
      Terry RochaAug 26, 2025
      If you find salted water in the service line of your Fleck Control Unit, it could be due to a blocked injector or screen, so clean the injector and replace the screen. Another reason might be that the timer isn't operating correctly, so replace the timer. Also, check for foreign material in the brine valve and clean or replace the brine valve. Additionally, check for foreign material in the brine line flow control (BLFC) and clean it. Low water pressure could also be a cause, so raise the water pressure to at least 1,4 bar. Finally, improper programming could be the issue, so check the programming and reset as needed.
  • K
    Kimberly BallAug 28, 2025
    How to fix loss of water pressure in Fleck Control Unit?
    • M
      Michael BoydAug 28, 2025
      If you're experiencing a loss of water pressure with your Fleck Control Unit, it could be due to iron build-up in the line to the softener, so clean the line. Alternatively, iron might have built up in the softener itself, requiring you to clean the valve and resin bed. Another cause could be the inlet of the valve being plugged, so remove the piston and clean the valve.
  • I
    ileblancAug 31, 2025
    Why Fleck Control Unit softener fails to draw brine?
    • T
      Timothy GarciaAug 31, 2025
      If your Fleck Control Unit softener isn't drawing brine, it could be due to a plugged drain line flow control, so clean the drain line flow control (DLFC). Another cause might be a plugged injector, so clean the injector and replace the screen. The injector filter could also be blocked, so clean the filter. Low water pressure could be the issue, so increase water pressure to at least 1,4 bar. An internal valve leak might also be responsible, so change the seals and spacers and/or piston assembly. Improper programming could also be the cause, so check the programming and reset as needed. Finally, the timer might not be operating properly, so replace the timer.
  • A
    ashley64Sep 2, 2025
    What causes excessive water in brine tank Fleck Control Unit?
    • E
      Erica HicksSep 2, 2025
      Excessive water in the brine tank of your Fleck Control Unit can be caused by a plugged drain line flow control, so clean the drain line flow control (DLFC). It could also be due to a brine valve failure, so replace the brine valve. Improper programming can also cause this issue, so check the programming and reset as needed.
  • S
    Sean FlemingSep 5, 2025
    What causes Fleck Control Unit valve to cycle continuously?
    • T
      Timothy GouldSep 5, 2025
      If the valve on your Fleck Control Unit is cycling continuously, it could be due to the timer not operating properly, so replace the timer. It might also be caused by a faulty optical sensor, so replace the circuit board. Another possibility is a faulty cycle cam operation, so replace the cycle cam or reinstall it.
  • G
    garrisonstephanieSep 8, 2025
    What to do if Fleck Control Unit has loss of resin through drain line?
    • G
      Gregory DawsonSep 8, 2025
      If you're experiencing a loss of resin through the drain line of your Fleck Control Unit, it could be due to a missing or broken top distributor, so add or replace the top distributor. Another cause could be air in the water system, so ensure the presence of an air check system in the brine tank. The drain line flow control might also be the wrong size, so ensure it is sized correctly.
  • T
    tmcdanielSep 12, 2025
    What causes drain to flow continuously on Fleck Control Unit?
    • D
      Dr. Leah Lopez MDSep 12, 2025
      If the drain is flowing continuously on your Fleck Control Unit, it could be due to foreign material in the valve, so remove the piston assembly and inspect the bore, remove any foreign material, and check the valve in various regeneration positions. Another cause could be an internal valve leak, so replace the seals, spacers, and/or piston assembly. The valve might also be jammed in the brine or backwash position, so replace the piston assembly and seals and spacers. A stopped or jammed timer motor could also be the cause, so replace the timer motor and check all gears for missing teeth. Finally, the timer might not be operating properly, so replace it.
  • F
    Frederick HardinSep 13, 2025
    What causes iron in softened water from Fleck Control Unit?
    • T
      Timothy BarrSep 13, 2025
      If you find iron in the softened water from your Fleck Control Unit, it could be due to a fouled resin bed. In this case, check the backwash, brine draw, and brine tank refill; increase the frequency of regeneration; and increase the backwash time.

Fleck 7700 SXT Specifications

General IconGeneral
DisplayLCD
Flow RateUp to 20 GPM
Operating Pressure20 - 125 PSI
Controller TypeMicroprocessor-based
Timer TypeElectronic
Backup BatteryYes
Service Flow Rate20 GPM
Inlet/Outlet1" NPT
Brine Connection3/8 inch
Drain Line1 inch
Operating Temperature34°F - 120°F
Cycle OptionsMultiple cycles available
MountingWall or floor mount

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