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extract fan blowing, not sucking


 
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jct007

from United Kingdom

Joined: 16 Jul 2006
Posts: 2
Location: Norfolk,
United Kingdom

PostPosted: Sun Jul 16, 2006 4:50 pm Reply with quote

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
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RF Lighting

from United Kingdom

Joined: 31 Mar 2006
Posts: 17219
Location: Leeds,
United Kingdom
Thanked: 894 times

PostPosted: Sun Jul 16, 2006 5:10 pm Reply with quote

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?
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breezer

from United Kingdom

Joined: 03 Jan 2003
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Location: Sussex,
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PostPosted: Sun Jul 16, 2006 5:35 pm Reply with quote

you havent put it in the wrong way round have you?
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reggie perrin

from United Kingdom

Joined: 26 May 2006
Posts: 112
Location: Warwickshire,
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PostPosted: Sun Jul 16, 2006 5:37 pm Reply with quote

Hehe
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jct007

from United Kingdom

Joined: 16 Jul 2006
Posts: 2
Location: Norfolk,
United Kingdom

PostPosted: Sun Jul 16, 2006 5:58 pm Reply with quote

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
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Spark123

from United Kingdom

Joined: 02 Jun 2005
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Location: Cumbria,
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PostPosted: Sun Jul 16, 2006 10:56 pm Reply with quote

What make and model of fan?
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plugwash

from United Kingdom

Joined: 28 Mar 2004
Posts: 8434
Location: United Kingdom
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PostPosted: Mon Jul 17, 2006 12:20 am Reply with quote

most likely the fan unit itself is faulty.
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SparkyMarky

from United Kingdom

Joined: 04 May 2006
Posts: 134
Location: United Kingdom

PostPosted: Mon Jul 17, 2006 12:15 pm Reply with quote

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?
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Spark123

from United Kingdom

Joined: 02 Jun 2005
Posts: 14170
Location: Cumbria,
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PostPosted: Mon Jul 17, 2006 1:26 pm Reply with quote

IIRC with vent axia you can wire L supply to red for forward and to yellow for reverse or vice versa.
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