Clack Transformer V3186UK-06) WS1 DC Power Supply UK 15V DC

The Clack V3186UK-06 is the genuine UK-plug transformer that powers Clack WS1 control valves, converting mains voltage to a 15V DC supply for the board and motor. If you've searched "Clack transformer replacement", "WS1 power supply" or "water softener transformer UK plug", this is the part — a common and inexpensive fix for a softener with a dead display. Genuine Clack part, stocked by WrekinWater.

Technical specifications

Symptoms that mean you need this part

• The display on the valve is completely blank
• The softener is stuck in one position and never regenerates on schedule
• The control board doesn't respond to any button presses
• The valve stops partway through a cycle and stays there indefinitely

Why it fails / why it matters

A worn-out transformer is one of the most common — and cheapest — causes of a 'dead' softener. After years of continuous use the internal windings degrade and output drops below what the board needs to run reliably. It's worth swapping before assuming the control board itself has failed, since the symptoms look identical from the outside.

Why buy this from WrekinWater

This is one of WrekinWater's most frequently reordered Clack spares precisely because it's the cheapest thing to try first — our team can talk you through confirming it's the transformer and not the board before you spend more than you need to. 15+ years supplying genuine water softener electrics, rated Excellent on Trustpilot.

How to fit it

1. Unplug the transformer from the wall socket.
2. Unclip the low-voltage barrel connector from the back of the control board.
3. Fit the new transformer, reconnect the barrel connector, and plug it back into the wall.
4. Check the display comes back to life — you'll need to reset the time of day and re-check your regeneration schedule, as these are usually lost with a power interruption.