shower stops working

Our Mira advance shower - its 8 years old - suddenly cuts out whilst in use sometimes. all lights on shower unit go out - shower works again after about 5 mins - any ideas?
Asked 12 years ago by Anonymous

 

It could be a faulty relay boardor faulty flow valve there is no way to know for sure.

However our experience is, ifthe service light comes on then it’s most likely to be a faulty relay board.

No lights at all then it’s probablythe relay board 

If it’s low pressure light is onthen it could be a faulty the flow valve or relay board.

 

If you are unsure start with therelay board, this is the more common fault.

 

On a few occasions you may needboth, if you need to be certain then order both!

 

No lights at all then you mayhave a faulty transformer also check that you actually have a power supply tothe shower.

 

To Check the transformer, thereis a white plug at the top of the relay board, the blue and red wires are mainsand should have 240v the black wires are from the transformer and should have12v AC

 

If the transformer is OK onceagain, start with the relay board.

 

 

Fitting Board and valve.

 

Obviously turn the power andwater off .

 

Changing the board is fairlystraight forward just take notes and photos of where all the cables and plugsgo as you dismantle then it should be easy to reverse the procedure.

 

To change the flow valve youhave to remove the ‘U’ clamp on the inlet and the screw at the foot of theheating tank there is then a small tab to the right of the heating tank this isa clip you need to pull this forward to release the hook you may need to use ascrewdriver or pliers to flick it forward.

 

The tank and valve should thenpull forward enough to be able to separate them, then remove the plug from  the circuit board.

 

Fit the two new ‘O’ ringssupplied and then push the tank and valve together offer the assembly back upand into place, refit the ‘U’ clamp and the screw at the bottom of the tank andmake sure that the hook clippie thing is firmly pushed back into place.

 

Turn on water and test alsocheck the earth wire that runs across the top of the flow valve is clear of thepurge button and remember to press the purge button for 15secs to allow theheating tank to refill.

 

 

Answered 12 years ago by The Shower Doctor

View Spares and Order Parts:

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 Mira Sport Thermostatic - Shower 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 Mira Electric Showers 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 Mira Electric Showers

For any other support request please get in touch.