Replace Grundfos Niagara STC 1.5C ??
You may have a faulty reed switch or pcb that is causing this.
www.showerdoc.com/grundfos-pcb-mains-centrifugal-pump-ea002
www.showerdoc.com/grundfos-reed-switch-insulating-boots-bp426
Answered 9 years ago by Anonymous
View Spares and Order Parts:
Grundfos Niagara Pump Spares
Do you need any additional help to find the correct spare part?
Please click the following link if you would like to see other answers or ask a question regarding the Grundfos Niagara Mains Centrifugal Pump Spares
If you've landed here and this question is not about your specific product, please take a look at these similar items on our Grundfos Shower Pumps Spares page. Alternatively, if you're looking for any other brands you should view our full range of Shower Spares.
If you do not want to proceed with a repair or you want to buy this item or similar, please consider one of our Replacement Grundfos Shower Pumps
For any other support request please get in touch.