My showere does not come on ie both the red light on the shower unit and the red light on the pull cord not coming on. Have checked the fuse box and not trip. changed the pull cord switch and still no light on the switch changed the wires round ie two reds and two blacks still no light on the cord. guesses which is supply so put red and black into L and R slots and that did not work then CHANGED ROUND USING OTHER PAIR RED BLACK and that didnt work either. sure the red light on switch will light up when connected to supply feed/\r\n
Could it be the mcb/ how do u change/check the fuses

Bob Khan, May 2009

I recently got an electiric shower in - so we got the electrician in & then plumber. When the plumber connected to the water mains there was nothing happening. When the pull cord was pulled it was tripping all the switches in the house but not the lights. The electrician came back & said that the electrics were fine and that it was a fault in the shower. Can anyone help??

K, March 2011

If the red light on the pull cord isolator switch lights all the time it means you have cross-connected the input (Black & Red) with the output black and red - not an ideal situation but easy to rectify and not immediately dangerous.

If the input red and black are connected properly - on the input side - the tell-tale safety neon will go on and off as you pull the cord and turn the switch on and off - the output to the shower need not be connected. The Neon is an excellent aid in discovery...

As you have no neon illuminating in the pulll-cord switch it appears that there is no power being supplied to the switch - the wiring or the breaker should be suspect.

When you go to the shop to buy a new Circuit Breaker invest in a Mains Tester screwdriver.

Your text, "changed the wires round ie two reds and two blacks" - I hope you have not connected two reds on one side of the switch and two blacks on the other. If so that would cause the fault you describe.

You may also have a fault with the shower itself - hope not...

Peccavi, May 2009