Gainsborough 9.5se electric shower boils when water flow turned off.

[davidsaysrams]

I've just bought a new Gainsborough electric shower to put on as a direct replacement for my old Gainsborough shower which stopped letting water through. The new one lets water through fine but wouldn't heat up at all so I took it down and rang Gainsborough, intending to send it back. They told me to put it back on and they'd send someone to look at it in-situ. I've put it back and now it heats up but won't stop heating when the water flow is turned off: it boils until I send water through to cool it down and I have to turn it off at the pull chord. Have I done something stupidly wrong? I don't want to have to pay for a needless callout.

 

[JohnW2]

I've just bought a new Gainsborough electric shower to put on as a direct replacement for my old Gainsborough shower which stopped letting water through. The new one lets water through fine but wouldn't heat up at all so I took it down and rang Gainsborough, intending to send it back. They told me to put it back on and they'd send someone to look at it in-situ. I've put it back and now it heats up but won't stop heating when the water flow is turned off: it boils until I send water through to cool it down and I have to turn it off at the pull chord. Have I done something stupidly wrong? I don't want to have to pay for a needless callout.

It should never 'boil', and it should never even turn its heating element on when there is no water flow. It sounds very much like a duff unit.

Kind Regards, John

 

[davidsaysrams]

Thanks John.
Just wanted to check that there wasn't something I'm missing, as Gainsborough said I'll have to pay for the call if there's no fault with the unit.
David

 

[cjard]

Return it to the shop for an exchange?

 

[ban-all-sheds]

I've put it back and now it heats up but won't stop heating when the water flow is turned off: it boils until I send water through to cool it down

What are you doing to control the flow of water through it?

 

[davidsaysrams]

Bought it direct from Gainsborough over the Internet. There's one "start/stop" button on the front of the unit that switches the water flow on/off and there's a turn switch to control the temperature (which seems to speed up/slow down the flow rate). There are no other controls or lights on the unit so those are my only means of controlling the water flow through it. The isolator on the pipe is fully open.

 

[ban-all-sheds]

Describe the fault to them in writing, ask them to tell you in writing what you should check before calling someone out.

 

[davidsaysrams]

Many thanks, all!
I'll get back to Gainsborough and ask them what I should check before I go for a call-out.