Strange shower fault

[southcoastboile]

Anyone got any ideas on this one?

went to a job were the electric shower was going freezing cold so replaced with a completely different model.

now it's doing the exact same thing again with the new model. Goes hot for a bit then goes cold?

 

[Masood]

Dodgy electrics intermittently cutting the supply?

 

[tolly]

Anyone got any ideas on this one?

went to a job were the electric shower was going freezing cold so replaced with a completely different model.

now it's doing the exact same thing again with the new model. Goes hot for a bit then goes cold?

I would check the mains pressure whilst shower is running and then check that against M.I's

 

[southcoastboile]

If the power was intermittently cutting out they would probably notice pressure fluctuation so I guess the only other thing it can be is a faulty new shower or pressure issues?

 

[jaydebruyne]

Maybe the pressure is too low and the thermal cut out is activating as the water is too hot..

 

[JCplumb]

If the electricity fails the valve would close so it's not the electrics.

 

[thompsonbrown]

Sounds like a water pressure problem.

 

[Unregistered]

of it was pressure related you would be able to see a drop in pressure but I think it stays the same which makes me think it's a faulty shower. Before I go down the pressure/new shower route can anyone think of any other possibilies?thanks a lot!!!!