1. We are pleased to announce the 'Home Automation' forum. Click here to get involved!

extract fan blowing, not sucking

Discussion in 'Electrics UK' started by jct007, 16 Jul 2006.

  1. jct007

    Joined:
    16 Jul 2006
    Messages:
    2
    Thanks Received:
    0
    Location:
    Norfolk
    Country:
    United Kingdom
    Hi We have recently moved into a new house, and found the extractor fan in the bathrooom did not, work, bought a new one, fitted...and it blows, but does not suck? what did I do wrong? checked the wring of the extractor fan against one which does work properly, and they are the same.. it is connected to an insulator switch, and that also appears to be wired the same as the one controlling the one that works properly..

    Help?????

    JohnT
     
  2. RF Lighting

    Joined:
    31 Mar 2006
    Messages:
    18,414
    Thanks Received:
    1,114
    Location:
    Leeds
    Country:
    United Kingdom
    do you have access to any electrical test equipment?
    Are you sure the terminals on the new fan are in the same order as on the old fan?
    Does the fan have a timer overrun?
    Can you post us a photo of the connections on the new fan?
    How many, what tyype and colour wires do you have at the fan?
    Are you sure it is running backwards, or could a draught be causing the problem?
     
  3. breezer

    Joined:
    3 Jan 2003
    Messages:
    23,326
    Thanks Received:
    30
    Location:
    Sussex
    Country:
    United Kingdom
    you havent put it in the wrong way round have you?
     
  4. reggie perrin

    Joined:
    26 May 2006
    Messages:
    112
    Thanks Received:
    1
    Location:
    Warwickshire
    Country:
    United Kingdom
  5. jct007

    Joined:
    16 Jul 2006
    Messages:
    2
    Thanks Received:
    0
    Location:
    Norfolk
    Country:
    United Kingdom
    sorry do not have access to any testing equipment to day...
    yes, the cables are in the same order, connecting to the cables on the device...

    device black/ connected to mains yellow withr ed sleeve
    device blue /connect to mains blue with black sleeve
    decice brown/ connected to mains red

    yes it does have a timer facility..

    no its not in backwards....

    it works when you turn the light on, and then runs on for a period after the light is turned off, its an ajustable time period...

    can not do photos today...hope this helps...... someone has replaced the lightfiting which this is switched from? could this be the problem area?

    JohnT
     
  6. Spark123

    Joined:
    2 Jun 2005
    Messages:
    14,379
    Thanks Received:
    424
    Location:
    Cumbria
    Country:
    United Kingdom
    What make and model of fan?
     
  7. plugwash

    Joined:
    28 Mar 2004
    Messages:
    8,807
    Thanks Received:
    264
    Country:
    United Kingdom
    most likely the fan unit itself is faulty.
     
  8. SparkyMarky

    Joined:
    4 May 2006
    Messages:
    134
    Thanks Received:
    1
    Country:
    United Kingdom
    One make of fan (IIRC its Xpelair, although it could be Vent-Axia) have a micro switch inside which can toggle it between input and extract. Are you sure there's nothing like this?
     
  9. Spark123

    Joined:
    2 Jun 2005
    Messages:
    14,379
    Thanks Received:
    424
    Location:
    Cumbria
    Country:
    United Kingdom
    IIRC with vent axia you can wire L supply to red for forward and to yellow for reverse or vice versa.
     

Share This Page