Mira vigour shower

The outer dial turns cogs inside the shower. Assuming these are still aligned correctly then you problem is a faulty Mira concentric harness assembly. See link below.

They are not a terrible shower but parts are very pricey. The Vigour & Event are the only power showers sold with only a 12 months warranty. 2 to 3 years is the norm. Irish sale of goods act says that a product must be fit for purpose. A shower that breaks after just over a year isn't fit for purpose. You have up to six years to make a small claims court claim. Problem is its not worth taking a day off work for a court case for such a small amount of money. This is how they get away with such a small warranty.

You could call Mira and see if will do anything for you. You could point out that the vigour & event are the only showers sold in Ireland with such a short warranty. You could point out that the Triton Novel SR silent running thermostatic power shower is a better quality shower, giving less trouble, has a silent motor, costs around the same as the vigour yet it has a 2 years parts and labour warranty. They might provide the part for free as "a good will gesture" but you will still have to pay around €100 for them to fit the part.