DIY Doctor

Electric shower heating and radiators

Postby jdh1976 » Sat May 24, 2008 7:45 pm

Since taking our radiators off for plastering reasons, our electric shower does not work in the morning.
We have put the radiators back on, sorted out the pressure, boiler pressure is correct, but in the mornnig, our electric shower does not work for ages.
It works ok in the evening and has worked absolutely fine before.
We took the radiatorsoff before for the same reason upstairs and the same thing happened. as soon as we put the radiators back on and sorted the pressure out the shower worked fine.
We are confused as surelly the electric shower should not be affected by the water in the radiators.
Also, when the water in the shower does get hot, if you use any of the hot water taps, it instantly turns the hot water off and the shower gets cold.
The water pressure is never affected.
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Simply Build It

Postby htg engineer » Sun May 25, 2008 10:32 am

Eh ? indeed.

The heating system and electric shower are not connected - so it's either a very strange coincidence this problem occurs when you drain the radiators or it's not electric shower it's a mixer shower - maybe pumped (electric) ?

no water in heating system = no hot water = cold shower.

The using hot tap problem - could be when using any other tap the water may go cold as the flow rate to the shower drops - no pressure reduction (noticebale) but there will be a reduction. Quite a few electric showers have low flow devices on them which cuts the electrical supply meaning no hot water.

Check the shower to establish exactly the type of shower you have. Post make and model on here.

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