Bristan Cheer electric shower not working

[parkesy_plumb]

Installed a bristan cheer 8.5kw as a straight swap for a gainsborough 8.5kw yesterday and it didnt heat the water up. Its wired correct so i rang my merchant and took it back for a new one. Took that back installed and that one didnt work either!!

Dont know what to do now should i try a third time? anyone been in this situation? cheers

 

[chris watkins]

It's not going to be the shower. Have you checked the water pressure / flow is above the minimum required & how have you tested the electrical supply ??

 

[parkesy_plumb]

yes pressure is way above the 0.7 bar required. Electrical supply tested with volt stick up to connector and into shower .. suppose i could check resistance of elements maybe

 

[chris watkins]

Or how about that you have a neutral ? Volt stick will tell only that you have live but not a complete circuit. Does anything light up on the shower?

 

[parkesy_plumb]

no lights on the shower but the thing only lets water through when theres power to it. how would i test the neutral?

 

[chris watkins]

So solenoid valve is opening & allows water through, if so there is power to it. Whats the flow like, did you flush ? Restrict the flow with your fingers & see if you bring on the pressure switch & the heater, if the flow is slow.
Otherwise check the heater element as you say.

 

[Paulus]

I guess you went through the commissioning procedure properly. I just thought I would mention it as I forgot once and couldn't get the shower working.

 

[parkesy_plumb]

update .... found a stop tap in loft to isolate the shower .. pressure must have been just under the 0.7bar .. removed old stop tap and works fine now ... thanks for your input!

 

[Shower Engineer]

update .... found a stop tap in loft to isolate the shower .. pressure must have been just under the 0.7bar .. removed old stop tap and works fine now ... thanks for your input!

This is the reason shower manufacturers don't like you returning "faulty" goods and prefer to call to site to solve the problem.

 

[lame plumber]

volt sticks are not a sensible way of testing electrics, use a meter and stay alive.