Redring Expressions shower not working properly during the winter

The performance of electric showers always drop off in the winter but not to the extent that they become unusable.

 The things to check first 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 / close the safety device that allows power through to the elements

 

Make sure that the shower head is clean and clear, that the hose isn’t kinked (this can happen just behind the hand set where it is difficult to see) also check the inside of the hose although it can look OK on the outside it could have collapsed internally.

 

One of the other possibilities is that an element has failed so the shower is OK in summer but not in winter, see below for how to check the elements.

 

It may 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.

http://www.youtube.com/watch?v=wzPt1hsfVq4

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

 

 

Not realy an answer more like if u fi d the exact prob it would be great , same as george it works 100% fine in the summer months and starts pulsating in the winter , winter it pulsed and pulsed and after about 5 or so trys it eventully clears , then when the outside temp is ok shower is fine , my wife uses it in her dog grooming slon nd the failure every winter when shes most busy is getting fustrating , today it took 20 mins of standing restarting it to get it working , surley if it was a flow fault comming to the shower as answered previous it would do the same in the summer? All my valves are open fully to the shower and I still have the pulses every winter this is year 3 with it now , water temp when working is fine btw , if anyone know the fix it would be great