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    • macman
    • By macman 13th Nov 09, 9:52 AM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    • #2
    • 13th Nov 09, 9:52 AM
    • #2
    • 13th Nov 09, 9:52 AM
    Have you got power coming to the shower. i.e. have you turned the circuit back on at the CU and at the isolator switch? With the shower off, is the pilot light illuminated on the isolator? Then switch the shower on and see if the RCD is tripping out straight away.
    No free lunch, and no free laptop
  • robert_harper_2000
    • #3
    • 13th Nov 09, 10:05 AM
    • #3
    • 13th Nov 09, 10:05 AM
    thanks macman. I don't quite know what you mean, the electric shower only works when there is power going to it as I know when I pulled the switch above it the red light went off and the shower wouldn't work.

    I have pulled the cord since and now the red light is on and water comes out but not hot.

    What were the other checks? With the boiler did you think?
    Help me to help you
    • macman
    • By macman 13th Nov 09, 10:12 AM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    • #4
    • 13th Nov 09, 10:12 AM
    • #4
    • 13th Nov 09, 10:12 AM
    The boiler has nothing to do with your electric shower, it is cold fed from the rising main. You obviously have power to the isolator switch, do you have power to the shower itself, i.e. does a light come on on the control unit when you switch it on? The element may have gone, or a number of other things, possibly you may have damaged something when you replaced the part.
    I suggest you get a qualified electricain in to look at it.
    No free lunch, and no free laptop
  • robert_harper_2000
    • #5
    • 13th Nov 09, 10:17 AM
    • #5
    • 13th Nov 09, 10:17 AM
    damn I thought I'd saved £200 but guess things are never that easy!

    There isn't a light on the unit only on the switch above it which is always on. Perhaps I damaged something as you say.
    Help me to help you
    • macman
    • By macman 13th Nov 09, 10:31 AM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    • #6
    • 13th Nov 09, 10:31 AM
    • #6
    • 13th Nov 09, 10:31 AM
    A new one should be about £100 depending on the power rating.
    With the water flowing, and the isolator on, what happens when you close the isolator?-the water flow should cease.
    Suggest you work your way through the fault finding chart in the manual:
    http://www.plumbworld.co.uk/images/zestinstallation.pdf
    No free lunch, and no free laptop
  • robert_harper_2000
    • #7
    • 13th Nov 09, 10:52 AM
    • #7
    • 13th Nov 09, 10:52 AM
    Value stops water supply. Knobs make no difference. Water supply must be ok due to the sheer pressure it is flowing out.
    Help me to help you
    • macman
    • By macman 13th Nov 09, 11:01 AM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    • #8
    • 13th Nov 09, 11:01 AM
    • #8
    • 13th Nov 09, 11:01 AM
    What do you mean by 'value stops water supply? You haven't answered the question-with power on at the isolator and the shower on at the control unit, what happens when you switch off at the isolator? Does the water flow cease?
    No free lunch, and no free laptop
  • robert_harper_2000
    • #9
    • 13th Nov 09, 11:31 AM
    • #9
    • 13th Nov 09, 11:31 AM
    That's weird, when I turned the isolator value to stop the water supply the shower returned to a more reasonable flow rate. I thought it was suppose to shut it off completely?
    Help me to help you
    • macman
    • By macman 13th Nov 09, 11:48 AM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    What do you mean by 'isolator value'? Do you mean 'isolator valve'? The isolator is the switch controlled by the pull cord, not a valve or knob on the control unit.
    Read the fault finder guide:,if water continues to flow with the isolator switch off, it indicates that the diaphragm has failed and the flow valve will require replacing.
    I suspect that the original leak has shorted out the internal circuitry or blown the element.
    No free lunch, and no free laptop
  • robert_harper_2000
    Sorry! The switch turned on then shower on then switch off does switch off the water.
    Help me to help you
    • macman
    • By macman 13th Nov 09, 12:00 PM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    Your last post does not make any sense. You still don't say which 'switch' you are talking about. If you mean the isolator, then the diaphragm is OK and the element may have gone.
    I suggest you get a qualified electrician in to trace the fault.
    No free lunch, and no free laptop
  • robert_harper_2000
    sorry again! lol

    If the isolator switch is on and the shower knob turned the water comes on. If I turn off the isolator value the water flow rate decreases but doesn't turn off.
    Help me to help you
    • macman
    • By macman 13th Nov 09, 4:27 PM
    • 40,040 Posts
    • 16,199 Thanks
    macman
    I repeat, the diaphragm is faulty, but I suspect you have other problems too.
    No free lunch, and no free laptop
    • woofwoofwoof
    • By woofwoofwoof 13th Nov 09, 8:25 PM
    • 241 Posts
    • 86 Thanks
    woofwoofwoof
    Sorry to hijack the thread Robert.

    Macman, I have a mira sport shower which won't heat the water. We have taken the cover off but there is a sticker that says 'no serviceable parts' - does this mean that we have to replace the whole shower or can we replace the heating element or do you have any ideas about why else the water won't heat? Many thanks.
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