Loss of pressure / hot and cold ouput

Once switched on, 3 conditions usually happen...



1) Gradually builds up to warm/hot temperature (never really hot), seems to be working okay, decent water pressure, as i increase temperature pressure decreases.



2) Outputs cold water at a lower pressure and remains cold for 2-5 minutes then suddenly bursts into life and becomes hot.



3) Hardly any pressure at all and after a period of time then switches to either condition 1 or 2.



If condition (1) does happen after a period of time the shower then loses pressure and goes cold and after "x" amount of time pressure boosts instantly and reverts to extreme hot temperature then back to normal hot.



I have read other posts and i intende to check both mains and shower wate valves are fully open.



Any other help would be appreciated



Thanks



Luke
Asked 13 years ago by Luke

The first things to check are:

1 That the main valve coming into your house is fully open.

2 Then check that the valve on the line to the shower is fully open.

If these valves are not fully open then there may not be enough water

getting to your shower to open the pressure switch therefore no power will get to the elements and the unit will show low pressure.

It could also be a faulty element in the heating tank (there are two, three in most 10kw showers) you can check them with a multi meter you should have a reading of around 12>18 ohms.

If you have power to the elements and no heat it's probably the elements, no power to the elements then it's probably a micro switch.

If you don’t have a multimeter we sell them at £10 each with a guide on how to use them for checking and testing the various parts of your shower.

Apart from helping to fix your shower, they are really useful for checking you have a power supply to appliances, for checking fuses, letting you know much power you have left in batteries

(so you know if they are dud or not) and lots of other jobs, in short they are well worth the £10.

http://www.showerdoc.com/installation/electrical-products/SKYTRO-600-005-Digital-Multi-Tester

Answered 13 years ago by The Shower Doctor

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