honeywell 42005748-001

  1. A

    Heating system water hammer

    Getting water hammer when motorised 2 port Honeywell turns hot water off to the cylinder. Valve works fine and its the right way. System been in for years and its just started happing. Boiler pump keeps running which is correct to dissipate the heat but as soon as the hive turns the hot water...
    • Adam a
    • Thread
    • abv boiler cental heating heating heating and hot water honeywell 42005748-001 hot water cyclinder water hammer y system vented
    • Replies: 4
    • Forum: Plumbing and Central Heating
  2. S

    Accenta G4 PCB replacement

    I am looking to swap out a faulty PCB on an accenta G4 alarm. When I disconnect mains and remove 12v battery the bell sounds. I assume it's the bell tamper. How can I disable this / silence bell during the PCB replacement preferably without climbing up to the bell box? Thank you!
  3. Y

    Honeywell 42005748-001

    I need to pick up a mains (UK) permanent feed (will be fused) from inside a Honeywell 42005748-001 junction box. Please can any member tell me the where I can pick up the feed, the drawing shows terminal feed just below the fuse, but I get 0 voltage read on my Avo Thanks
    • yelnats69
    • Thread
    • 42005748-001 honeywell honeywell 42005748-001
    • Replies: 13
    • Forum: Electrics UK
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