Mira Sport Shower repair

We've had this shower for a number of years and today I replaced the solenoid for the third time! The last time was 6 years ago. The fault symptoms were that the water cut off mid-shower (after about 4 minutes - I like long showers). After a few minutes, if the shower was then turned off and on (via the start/stop switch) the water would sometimes flow again but only for 4 minutes or so. Low water pressure and also limescale clogging the shower hose/head can cause this but neither of these were the issue here.

The solenoid is available from Amazon for about £10.

The procedure to replace the solenoid is as follows. First of all, switch off the power and the water to the shower and remove the shower hose connection. Next, remove the 3 screws shown below and then gently prise off the front panel. Try not to disturb the panel knobs so that the panel can easily be refitted.

To access the solenoid (shown in the yellow box below), I found it easier to remove the whole shower assembly and this is what I'm going to describe now. Remove the inlet water/power cover outlined in red by simply pulling it towards you.

Now unscrew the two T15 screws and remove the inlet bracket.

Next, remove the other T15 screws as shown in red and loosen the mains connector screws shown in yellow. Pull out the three mains wires (live, neutral and two earth wires).

The shower assembly is now held to the wall only by the water inlet pipe connection marked below in red on the left. This is a push-fit with a rubber seal. Now by holding the heater tank and the water inlet and jiggling the water inlet pipe connection and the heater tank pipe connection (marked below in red on the right and also a push-fit with a rubber seal), the complete assembly should come away from the wall.

It may help to use a pair of grips to slightly rotate the inlet pipe connection.

With the solenoid now easily accessible, disconnect its two wires and use a flat blade screwdriver to gently lever the solenoid off its spindle. It will be quite tight and so some force will be required.

Fit the new solenoid, reconnect its two wires and place the shower assembly back into its housing on the wall. Some jiggling of the inlet pipe and heater tank pipe connections will be required. Refit the inlet bracket with its two T15 screws. Next, refit the three T15 screws to secure the assembly to the housing and then re-attach the mains wires. Refit the inlet water/power cover and then the front panel itself (three screws). Refit the shower hose/head and switch on the water and power to the shower. This fixed the fault for me 😄