Mira Shower Thermal Switch Replacement


This article advises how I have replaced a Mira Shower thermal switch in a MIRA Sport 9kW Thermostatic Shower on several occasions.

Originally I installed a MIRA Sport 9kW Thermostatic Shower as part of a new bathroom and had it tested and certified by a qualified electrician on 1st May 2007. I was very pleased with it and it worked well for three years until June 2010 when it developed a fault.

I found that in the middle of taking a shower the water would go cold for a few seconds and then get warm again. On the first few occasions I wondered if cold water being drawn off by other taps and appliances was lowering the water pressure to the shower and so causing it to operate incorrectly (although the low pressure light was not illuminating). As the days went by the problem got worse and my wife ended up washing shampoo off with cold water. I knew then that I would be in bad books until it was fixed.

I had to determine if this fault could be fixed or if I would have to replace the entire shower unit. For this I needed to take a look inside the shower unit.

Continue reading “Mira Shower Thermal Switch Replacement”

How Many Parts Make A Shower Head?

How Many Parts?

You may be surprised to learn that the shower head that came with my Mira Sport Thermostatic Shower is made from 22 separate parts. If you count them in the featured image above you will see 21 but take note that the main body of the shower head, on the right, is made from two inseparable parts of plastic.

I can also tell you that the main body of the shower head retains water after use. Some drops can be removed by shaking it in various ways but some always remains inside. If the shower isn’t used regularly this water will become stagnant and may hold dangerous bacteria. I would recommend turning the shower on at least once per week to refresh the water in the shower head.

This all came to light when I wanted to do a good job of cleaning mould and calcium off the shower head. I felt the best job would be done by dismantling it and cleaning all the parts individually since some mould looked as if it had penetrated inside.

Continue reading “How Many Parts Make A Shower Head?”