hi,Was called out to a faulty shower, my problem is... the shower works on cool and high settings but when turned to very high the shower gives a massive bang and spark and the breaker trips..... has anyone encountered this before, or does anyone know what generally goes faulty with showers, as it is about 10 years old... is it the element or water tank????
regards matt
Hi m8 welcome
I presume when you say Cool / high / very high settings.
you are referring to three heat option push button (or dial selector).
Not the general hot/cold flow rate dial.
Your average electric shower has two element which are somewhere around
10ohms to 12ohms each..
the cold setting has NO elements in circuit.
The high (or warm) setting has One element in circuit.
The very high (hot) setting has Both elements in circuit.
There are also some micro switches often mounted on a pivot-able assemble that only allows the power to get to the element if the the water pressure is correct.. (i.e. stop it burning itself out)
From the sound of what you are saying I would guess one of your elements has gone.
Generally if the micro switches go, you don't get hot water at all..
and they don't normally have any contact with any bits to spark or bang?
But the element probably has contact with a metal cylinder... (which I assume you have, cuz it is 10 years old)
Modem ones are more plastic construction.
The only other bit I would think is a melted wire..
overheated from loose spade connector on part of the internal wiring.
making contact with a bit that it shouldn't?
I would bet if it is 10years old.. the cheapest solution is to replace it...
If it was nearer 5 years I would say have a go at getting a spare part
but if you were gong to buy a spare heater assembly it is probably going to be