Thank you for your response.It is a Creda power shower 171351.The shower is working intermittently. I have good flow. It is about 2 years old.
The link above shows the internal filters on page 10. The link is for the full Installation Manual
Hi, I checked filters ,which are all clean. When start button is pressed, the top dial goes up to three and stops within few seconds. The flow rate is ok.If you persist pressing the start button ,suddenly it will work.