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New Grohe Avensys shower not getting hot

Discussion in 'Plumbing and Central Heating' started by bygravey1, 17 Dec 2020.

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  1. bygravey1

    bygravey1

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    Have renovate by en-suite and acquired a Grohe Avensys Modern Concealed Shower Mixer 34224 off ebay. Very nice piece of kit The shower is fed from a combination boiler and mains cold supply. At first you could still just about get the shower hot enough but only by turning the on-/off lever back, the temperature lever didnt allow the shower to get hot enough when fully on. Then after while it has stopped getting hot at all and only releases cold water. The previous non branded mixer worked a treat & the adjacent basin provides piping hot water. I correctly connected to the right H/C inlets so not sure why, any ideas?
     
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  3. denso13

    denso13

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    Does it get hot if you run the basin hot at the same time? Also take of the shower head and see it gets hot with an open end on the shower hose.
     
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  4. bygravey1

    bygravey1

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    Hi thanks nope both do not impact stone cold despite basin adjacent and piping hot...
     

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  5. denso13

    denso13

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    Do you have the manual? You can normally adjust the hot temperature setting as part of the installation.
     
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  6. polesapart

    polesapart

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    upload_2020-12-17_18-16-15.png
     
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  8. bygravey1

    bygravey1

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    I just snuck in a couple of isolator valves and cold washes through fine but when I turn off the cold the hot doesn't go through at all as if its blocked.Took the brass connectors off and they look clear. So not sure?
     
  9. denso13

    denso13

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    On an open isolator valve? If so something's not right and you'll need to start tracing the pipe backwards and checking for hot water at different points.
     
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  10. bygravey1

    bygravey1

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    The isolators are just before the shower inlets and when open and not connected to the shower they run fine, hot out of the hot and cold out of the other
     
    Last edited: 17 Dec 2020
  11. bygravey1

    bygravey1

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    For closure - Proves not a supply issue as have replaced with another unit (which is a Grohe as well) as cannot wait for Grohe to come our via the warranty.
     
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