
Product Description
The Fleck 25329, formerly listed as part number 16944, is the genuine 24V 50/60Hz drive motor used across a wide range of Fleck water softener control valves, and WrekinWater stocks it for softeners that have stopped regenerating or are making unusual noises from the valve head. This 3W, 2RPM motor is what physically turns the camstack through each stage of regeneration.
Technical specifications
| Part Number | 25329 (formerly 16944) |
| OEM Reference | 0401177160 |
| Brand | Pentair Fleck |
| Voltage | 24V AC |
| Frequency | 50/60Hz |
| Power | 3W |
| Speed | 2 RPM |
Symptoms that mean you need this part
- The control display shows an error, or the softener simply stops mid-regeneration with no explanation
- You hear a grinding, humming or clicking noise from the valve head but see no movement
- The camstack fails to turn at all during a scheduled or manually initiated regeneration
- The motor housing feels unusually hot to the touch or has a faint burning smell
Why it fails / why it matters
The drive motor is what turns the camstack and piston gear train through each position of the regeneration cycle, running at low speed almost continuously over the softener's lifetime. Being sited in a damp utility cupboard or garage environment, combined with years of low-speed operation, gradually wears the internal gears and bearings and degrades the motor windings, until the motor either stalls under load, turns too slowly to complete a cycle, or burns out completely.
Why buy this from WrekinWater
WrekinWater has served more than 50,000 customers over 15 years from our base in Bettisfield, Shropshire, and as UK Company No. 11000488 we stock genuine Pentair Fleck parts alongside Autotrol, Clack, Kinetico and other major brands, rated Excellent on Trustpilot. This 25329 motor is the direct genuine replacement for the earlier 16944 part number, so you can order it with confidence it matches the original spec.
How to fit it
- Turn off the mains power to the control valve before doing anything else
- Locate the motor on the side of the valve head, usually secured with a single screw or retaining clip
- Disconnect the wiring plug from the control board, noting how it's orientated
- Remove the old motor, noting the gear alignment or indicator mark position before it's disturbed
- Fit the new 25329 motor, re-engaging the drive gear in the same alignment, and reconnect the wiring plug
- Restore power and run a manual regeneration to confirm the valve now indexes smoothly through a full cycle
Technical Resources
Frequently asked questions