FLECK 4600 - Motorized valve

4600 - Motorized valve FLECK - Free user manual and instructions

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What does the red regeneration light on the FLECK 4600 motorized valve mean and how can I resolve this issue?
Frequently Asked Questions - 20/03/2026
Response Notice-Facile

The red regeneration light on the FLECK 4600 motorized valve simply indicates that your water softener is in the process of regeneration. This is a normal and expected operation of the valve. Regeneration is the automatic process during which the softener cleans its resin to continue treating water effectively. This cycle lasts about 180 minutes (3 hours) for a standard regeneration, or 90 minutes if you have the Fast Regen option.

The red light only becomes a problem if it indicates a regeneration that never stops or that occurs too frequently. In these cases, check the following points:

  • Insufficient salt level: Check that the salt tank contains salt above the water level. The level must remain above the water. A lack of salt prevents regeneration from functioning properly and can lock the valve in regeneration mode.
  • Brine tank: The water level in the tank should not be excessive. Check that the automatic filling is working correctly and is not overfilling the tank (a problem that causes continuous regeneration).
  • Programming: Ensure that the regeneration cycle is correctly programmed. For the timer version, check the interval in days and the scheduled regeneration time. For the volumetric version, make sure the set capacity (in m³) matches your water consumption.
  • Unplug and wait: If the red light stays on continuously, turn off the device for 10 minutes, then turn it back on. If the valve returns to service mode (green light), the cycle is complete. If the red persists, it indicates a failure of the motor or control head.

If after these checks the red light continues to illuminate abnormally or never turns off, it may be necessary to replace the control head or call a professional to diagnose a potential motor fault.

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How to manually perform a regeneration on a FLECK 4600 motorized valve?
Frequently Asked Questions - 08/03/2026
Response Notice-Facile

Yes, it is possible to manually perform a regeneration on a FLECK 4600 motorized valve. Here’s how to proceed:

Steps to initiate a manual regeneration

  1. Access the valve: Open the valve cover to access the control panel.
  2. Locate the regeneration button: On the panel, find the button or switch dedicated to regeneration. It may be labeled "Regeneration", "Regenerate" or have a specific symbol.
  3. Trigger the regeneration: Press this button to start the regeneration cycle. The valve will then automatically begin the different phases, including rinsing and saturation.
  4. Monitoring: During the process, it is advisable to monitor the valve to ensure that the regeneration is proceeding correctly. This cycle may last several minutes.
  5. End of cycle: Once the regeneration is complete, the valve will automatically return to service mode.
  6. Close the valve: Don’t forget to close the cover to protect the controls.

This procedure allows you to manually restart the regeneration of your water softening or filtration system equipped with a FLECK 4600 valve, which can be useful in case of specific needs or maintenance.

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What do the cycles mean in the operation of the FLECK 4600 motorized valve?
Frequently Asked Questions - 08/03/2026
Response Notice-Facile

In a FLECK 4600 motorized valve, the cycles correspond to the different operating phases that ensure optimal water treatment, particularly during the regeneration process of the softening resin.

Main cycles of the FLECK 4600 valve:

  • Service cycle: This is the normal phase where hard water passes through the resin, which retains the minerals responsible for hardness (calcium, magnesium). The treated water is softened and ready for use.
  • Regeneration cycle: This phase is triggered when the resin is saturated with minerals. It includes several steps:
    • Backwash: removal of accumulated impurities on the resin.
    • Saturation: introduction of a saline solution (saltwater) to recharge the resin with sodium ions.
    • Final rinse: removal of excess salt and residues to prepare the resin for a new service cycle.
  • Filling cycle: On some models, this cycle allows the salt tank to be filled with water to prepare the saline solution used during regeneration.

Each cycle has a specific duration and order, programmed into the valve according to water consumption and detected hardness. These cycles ensure optimal efficiency and automatic operation of the softener.

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How to clean the resin in a FLECK 4600 motorized valve?
Frequently Asked Questions - 08/03/2026
Response Notice-Facile

Cleaning the resin in a FLECK 4600 motorized valve is an important operation to maintain the efficiency of the water treatment system. Here are the steps to follow:

1. Preparation

  • Turn off the water and electricity supply to the valve to ensure your safety during the intervention.
  • Locate and remove the valve cover to access the resin tank.

2. Resin Inspection

  • Examine the resin: if it is dirty, clumped, or discolored, cleaning is necessary.
  • If the resin is too worn or contaminated, it may be better to replace it.

3. Cleaning the Resin

  • Use a specific cleaning product for resin, available commercially, suitable for water softeners.
  • Follow the manufacturer's instructions for dosage and application method.
  • Pour the product into the resin tank according to the recommendations.

4. Rinsing

  • Start a complete rinsing cycle to remove any residue of the cleaning product.
  • Ensure that the rinsing water is clear and free of chemical odor.

5. Reassembly and Verification

  • Replace the valve cover properly.
  • Restore the water and electricity supply.
  • Test the operation of the valve to ensure everything is in order.

Regular maintenance of the resin ensures better performance of your FLECK 4600 motorized valve and extends its lifespan.

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How to set the time on a FLECK 4600 water softener?
Frequently Asked Questions - 11/12/2025
Response Notice-Facile

To set the time on your FLECK 4600 water softener, you need to access the 24-hour wheel on the control panel of the control head, located on top of the unit. This operation takes only a few seconds and requires no tools.

Setting Steps:

  • Locate the 24-hour wheel clutch (the red gear) on the control panel
  • Press firmly on this clutch to activate it
  • While holding the clutch down, turn the hour wheel to display the correct time in the small window provided for this purpose
  • Release the clutch once the time is set correctly

The time is displayed on a small display located under the 24-hour wheel. Make sure to set the exact time for day and night (24-hour format). This setting is particularly important as it determines when the valve will perform the programmed regeneration cycles, usually in timer mode.

The control panel of the FLECK 4600 has a green light that indicates the unit is in service position, and a red light that turns on during regeneration. If your unit has a volumetric version rather than a timer version, the 24-hour wheel also plays a role in the overall operation of the system. The time setting should be checked regularly, especially after a prolonged power outage.

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Download the instructions for your Motorized valve in PDF format for free! Find your manual 4600 - FLECK and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. 4600 by FLECK.

USER MANUAL 4600 FLECK

Installation N°System capacitym3°tH
Valve serial N°Inlet water hardness°tH
Tank sizeWater hardness after mixing valve°tH
Resin typeBrine tank sizelitres
Resin volumeQuantity of salt per regenerationKg

VALVE TECHNICAL CHARACTERISTICS

VALVE TYPE

4600/1600

5600/1600

TRIGGERING

Meter immediate

FLECK 4600 - VALVE TECHNICAL CHARACTERISTICS - 1

m3

Meter delayed

FLECK 4600 - VALVE TECHNICAL CHARACTERISTICS - 2

m

Timeclock

FLECK 4600 - VALVE TECHNICAL CHARACTERISTICS - 3

Days

Fast Regeneration

FLECK 4600 - VALVE TECHNICAL CHARACTERISTICS - 4

m³/day

REGENERATION CYCLES ACCORDING TO PISTON TYPE

CYCLEStandard piston WhiteLWU piston GreyFast regen piston Blue
Preliminary rinseX
BackwashXXX
Brine draw and slow rinseXXX
Rapid rinseXXX
Resin settlingX
Brine refillXXX

HYDRAULIC SETTINGS

Injector size

FLECK 4600 - HYDRAULIC SETTINGS - 1

Pressure regulator

Drain line flow control (DLFC)

GPM

Brine line flow control (BLFC)

GPM

1,4 bar (20 PSI)

2,1 bar (30 PSI)

FLECK 4600 - HYDRAULIC SETTINGS - 2

Without

VOLTAGE

230V/50Hz

FLECK 4600 - VOLTAGE - 1

24V/50-60Hz with transformer

FLECK 4600 - VOLTAGE - 2

24V/50-60Hz without transformer

FLECK 4600 - VOLTAGE - 3

Valves complying European regulations:

  • Nr. 89/336/EEC, "Electromagnetic compatibility",
  • Nr. 73/23/EEC, "Low voltage"

2.1 WATER PRESSION

A minimum of 1,4 bar of water pressure is required for the regeneration valve to operate effectively. Do not exceed 8,5 bar; if you face this case, you should install a pressure regulator upstream the system.

2.2 ELECTRICAL CONNECTION

An uninterrupted current supply is required. Please make sure that your voltage supply is compatible with your unit before installation. If the electrical cable is damaged, it must imperatively be replaced by a qualified personal.

2.3 EXISTING PLUMBING

Existing plumbing should be in a good shape and free from limescale. In doubt, it is preferable to replace it. The installation of a pre filter is always advised.

2.4 BY-PASS

Always provide a by pass valve for the installation, if the unit is not equipped with one.

2.5 WATER TEMPERATURES

Water temperature is not to exceed 43^ , and the unit cannot be subjected to freezing conditions.

3.1

Install the softener pressure vessel(s) in a chosen place on a flat firm surface.

3.2

During cold weather, it is recommended to bring the valve back to room temperature before operating.

3.3

All plumbing for water inlet, distribution and drain lines should be done correctly in accordance with legislation in force at the time of installation. Install without tension or bending stresses.

3.4

The distribution tube should be cut flush with the top of the tank. Slightly bevel the ridge in order to avoid deterioration of the seal whilst fitting the valve.

3.5

Lubricate the distribution tube joint and the joint with a 100% Silicon lubricant. Never use other types of greases that may damage the valve.

3.6

All soldering on main plumbing and to the drain line should be done before fitting the valve. Failing to do so can generate irreversible damages.

3.7

Use Teflon® tape if necessary in order to seal between the drain fitting and the outlet flow control.

3.8

On units with by-pass, place in by-pass position. Turn on the main water supply. Open a cold water tap nearby and let run a few minutes or until the system is free from foreign material (usually solder) that may have resulted from the installation. Once clean, close the water tap.

3.9

Place the by-pass in service position and let water flow into the mineral tank. When water flow stops, slowly open a cold water tap nearby and let run until the air is purged from the unit.

3.10

Plug the valve to a power source. Check that the valve is in service position

3.11

Fill approximately 25mm of water above the grid plate, (if used). Otherwise, fill to the top of the air check in the brine tank. Do not add salt to the brine tank at this time.

3.12

Initiate a manual regeneration, bring the valve into « brine draw and slow rinse position » in order to draw water from the brine tank until the blockage of the air check; the water level will be approximatively in the middle of the air check.

3.13

Open a cold water tap and let the water run in order to drain the air out of the circuit.

3.14

Bring the valve in brine refill position and let it get back to service position automatically.

3.15

Now you can add salt to the brine tank, the valve will operate automatically.

FLECK 4600 - WATER TEMPERATURES - 1
TIME CLOCK

FLECK 4600 - WATER TEMPERATURES - 2

FLECK 4600 - WATER TEMPERATURES - 3
LABEL SIGNIFICATION

Service

FLECK 4600 - WATER TEMPERATURES - 4

Regeneration

FLECK 4600 - WATER TEMPERATURES - 5

Backwash

FLECK 4600 - WATER TEMPERATURES - 6

Brine draw/ Slow rinse

FLECK 4600 - WATER TEMPERATURES - 7

Brine refill

METERED

FLECK 4600 - METERED - 1

White dot

Set the capacity of soft water between 2 regenerations using the following formula:

Water capacity in ^3 = exchange capacity in m'tH - reserve capacity in m

Water hardness tH

To do so, lift the transparent disc with the label and display the capacity facing the white dot.

Example for the following drawing, the capacity set is 6.6 cubic meters between two regenerations.

TIME CLOCK

FLECK 4600 - TIME CLOCK - 1

Pin pushed outside

Use the same formula as for metered version and divide by daily water consumption to obtain the number of days between 2 regenerations.

There are two time clock wheels:

  • 7 days: based on the week, number 1 will refer to Monday, number 7 to Sunday.
  • 12 days: allows to set a regular interval every 2, 3, 4, or 6 days.

To set up, push the pins out.

Example: on the drawing one regeneration every 2 days.

COMMON SETTINGS

Time of day

Press the clutch on the 24 hour wheel, red gear, then turn the hour wheel to display the correct hour in the window.

Salt volume per regeneration

Here is a table, usually used in water treatment.

SALT WEIGHT N G / LITRE OF RESINEXCHANGE CAPACITY IN °TH / M2/ LITRE OF RESINSALT WEIGHT IN G / °TH / M2
80420
125525
180630

FLECK 4600 - Salt volume per regeneration - 1

On the brine cam, there is a segment and a indication Label in Kilogram. This segment with an indicator ensures the function of brine refill. Based on the table, set the amount of salt in Kg necessary for the resin regeneration. This way, the valve will send the correct volume of water in the brine tank in order to dissolve the necessary volume of salt for regeneration.

Example: 15 litres of resin x 125g = 1875g (1.9 kg of salt)

Place the indicator slightly under 2kg

INCIDENTCAUSESOLUTION
1. Softener fails to regenerateA. Interrupted powerB. Defective power headC. Unplugged meter cableD.Blocked meterE. Defective motorF. Wrong programmingA. Restore electrics (mains, fuse)B. Change power headC. Check connections of the time rand on the meter cover.D. Clean or change meterE. Change motorF. Check programming and modify if necessary
2. Softener delivers hard waterA. By-pass in "by-pass" positionB. No salt in the brine tankC.Blocked injector and/or filterD. Not enough water in the brine tankE. Hardness arriving from hot water supplyF. Leak at the distributor tubeG. Internal valve leakH.Blocked meterI. Meter cable unpluggedJ. Wrong programmingA. Put by pass in "service" positionB. Add salt in the brine tank and keep salt level above water levelC. Clean or replace fibre or injectorD. Check brine tank filling time and clean flow regulatorE. Repeated flushing of the hot water tankF. Ensure the distributor tube has no cracks, Check the O'ringG. Change seals & spacers and/or pistonH. Unblock the meterI. Check cable connections in the power head and on the meter coverJ. Check programming and modify if necessary
3. Excessive salt consumptionA. Improper brine refill settingB. Too much water in the brine tankC. Wrong programmingA. Check use of salt and setting of brine refill.B. See problem n°6C. Check programming and modify if necessary
4. Water pressure dropA. Iron deposit in the softener inletB. Iron deposit in the softenerC. Valve inlet obstructed by foreign elementsA. Clean the inletB. Clean valve and resinC. Remove piston and clean valve
5. Loss of resin through drain lineA. Top distributor missing or brokenB. Air in water systemC. Drain line flow control is the wrong sizeA. Add or replace the top distributorB. Ensure the presence of air check system in the brine tankC. Ensure the drain line flow control is sized correctly
6. Iron presence in softenerA. The resin bed is dirtyB. Iron concentration exceeds recommended parametersA. Check backwash, brine draw and brine refill.Regenerate more often and increase backwash cycle timeB. Contact dealer
7. Too much water in the brine tankA. Plugged drain line flow control (DLFC)B. Faulty brine valveC. Wrong programmingA. Check flow regulatorB. Change brine valveC. Check programming and modify if necessary
8. Salted water in in service lineA. Filter and injector blockedB. Power head not operating proper cyclesC. Foreign elements in brine valveD. Foreign elements in the brine line flow control (BLFC)E. Low water pressureF. Wrong programmingA. Clean injector and filterB. Change power headC. Change brine valve seat and clean itD. Clean BLFCE. Raise inlet pressure to 1,8 bar minimumF. Check programming and modify if necessary
9. No brine drawA. Plugged drain line flow control (DLFC)B. Plugged filter and injectorsC. Low water pressureD. Internal valve leakE. Wrong programmingF. Power head not operating properlyA. Clean drain line flow controlB. Clean filter and injector, change if necessaryC. Increase inlet pressure to 1,8 bar minimumD. Change seals, spacers and/or piston assemblyE. Check programming and modify if necessaryF. Change power head
10. The valve regenerates constantlyA. Faulty power headB. Faulty microswitch or wiring loomC. Defective or badly set cycle camA. Change power headB. Change microswitch or wiring loomC. Reposition or change cycle cam
11. Constant leakage to the drainA. Foreign elements in the valveB. Internal valve leakC. Valve blocked in brine refill or backwashD. Defective or blocked timer motorE. Powerhead not operating properlyA. Clean valve and check it in the different regeneration positionsB. Change seals & spacers and/or piston assemblyC. Change seals & spacers and/or piston assemblyD. Change motor and check gear teethE. Change power head

OPTIONS

Hot water available only on the 4600 valve:

The use of specific materials allows the valve to work at temperatures higher than 43^ : Up to 82^ for a timeclock version or 65^ for a metered version.

Immediate Regeneration:

As opposed to time clock or metered valves that regenerate at 2 A.M. this option allows the valve to regenerate immediately after the set capacity is consumed

Fast Regeneration (FR):

This option allows the valve to regenerate in 90 minutes instead of 180 minutes. This valve can only be fitted with vessels up to 10^ .

Low water usage piston (L.W.U.):

With this piston, water consumption during regeneration can be reduced.

Pistone LWU (Low Water Usage = pistone economico):

Drain line flow control (DLFC)

Brine line flow control (BLFC)

GPM

VOLTAGE

230V/50Hz

FLECK 4600 - VOLTAGE - 1

Specific part assembly for the 4600 Hot water version

Assembly according to timeclock or metered version

Performances results available upon request

Manual assistant
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Product information

Brand : FLECK

Model : 4600

Category : Motorized valve