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Shower Pump Only Works on Cold

  • 17-04-2024 8:48am
    #1
    SmashingPilot
    Registered Users, Registered Users 2 Posts: 540 ✭✭✭


    I have recently moved into a new house and the pump for the shower only activates when the temperature in the shower is cold.
    Once I turn the dial too much, the pump stops and only a small amount of water comes out.

    Is there any simple checks I can do before possibly getting someone to look at it?
    The pump is a Salamander CT54 XTRA.



Comments

  • #2
    blackbox
    Registered Users, Registered Users 2 Posts: 4,456 ✭✭✭blackbox


    Shower pumps are normally activated by a flow switch, so it sounds like yours is faulty.

    However it might be worth running it on full hot for several minutes to see if you get any air bubbles out of the system.

    Is the pump for the shower only or does it also feed the taps?



  • #3
    SmashingPilot
    Registered Users, Registered Users 2 Posts: 540 ✭✭✭SmashingPilot


    https://www.boards.ie/discussion/comment/122028978#Comment_122028978

    Hey, I think its just for the shower. The pump never activates for the taps, only when the cold tap on the shower is on. Is there a way for me to check the flow switch easily? Or is this a job for a professional?



  • #4
    Kimbot
    Moderators, Computer Games Moderators, Social & Fun Moderators Posts: 18,693 Mod ✭✭✭✭Kimbot


    The type of pump you have is for a shower only I believe:

    https://www.screwfix.ie/p/salamander-pumps-ct54xtrasf-regenerative-twin-shower-pump-1-5bar/575kx

    The manual appears to be included on that link too incase there is troubleshooting tips in there :)



  • #5
    Sleeper12
    Registered Users, Registered Users 2 Posts: 17,157 ✭✭✭✭Sleeper12


    It sounds like a blocked filter on the hot side of the shower or else a faulty thermostatic cartridge in the shower



  • #6
    loyatemu
    Registered Users, Registered Users 2 Posts: 15,115 ✭✭✭✭loyatemu


    turn off the pump power and run the shower on just hot for a few minutes (if the pump is also connected to the bath taps, turn the hot on there as well). this should clear out any air locks. then try turning the power back on while the water is running.



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  • #7
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,391 ✭✭✭DublinDilbert


    I'm not overly familiar with this exact pumps but I have had issues in the past with pumps and always the hot side. What I found was the flow switches were degrading from the hot water. The plastic on the flow magnet on the hot side was cracking, this meant the magnet would swell and rust. Then it would jam...



  • #8
    cnocbui
    Registered Users, Registered Users 2 Posts: 20,111 ✭✭✭✭cnocbui


    It's likely to be the flow switch on the hot side. If you have a strong magnet handy, and if the location of the reed switch on the hot side can be determineed, you can bring the magnet close to the reed switch, trying various orientations, and if the pump turns on then it's likely the activating magnet is getting stuck internally.

    On a stuart turner, the flow switch is a brass pipe section with a plastic coated magnet on the inside, which sinks to the off position due to gravity. When the tap is opened, water flows in at the bottom, lifting the magnet up the brass tube to where a reed switch is clamped on the outside of the brass tube, which then activates due to the magnetic field of the magnet.



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