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ferroli 901 optima fan not running on full speed


 
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sime2009

from United Kingdom

Joined: 25 Jan 2009
Posts: 5
Location: Nottingham,
United Kingdom

PostPosted: Sun Jan 25, 2009 10:46 am Reply with quote

I have just replaced the ch press relief valve on my Ferroli 901 optima. refilled system, switched on central heating to perminent and the fan will not run on full speed, checked the pcb fan relay is swiching over to full but no voltage to fan, i suspect board fault, is there any thing that i could have missed. it seems a bit strange that the board decides to go down at the same time when changing a valve.
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sime2009

from United Kingdom

Joined: 25 Jan 2009
Posts: 5
Location: Nottingham,
United Kingdom

PostPosted: Sun Jan 25, 2009 11:09 am Reply with quote

i would just like to add the pump is running fine the board is not reporting any faults via the LEDS! its doing my head in bloody italian boilers!
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sime2009

from United Kingdom

Joined: 25 Jan 2009
Posts: 5
Location: Nottingham,
United Kingdom

PostPosted: Sun Jan 25, 2009 12:02 pm Reply with quote

i have just check it again switched ch on and noticed the fan relay buzzing its head off, i also searched the previous questions and come accross a previous prob with a ferroli 701 i thnk vestnpants replaced the board and it done the trick!
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nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6246
Location: United Kingdom
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PostPosted: Sun Jan 25, 2009 12:08 pm Reply with quote

this happens a lot on the 701. the relay usually turns to a melted mess if left long enough.

from my experience you are probably right with the pcb being at fault.

buy another boiler instead of a pcb though icon_lol.gif
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sime2009

from United Kingdom

Joined: 25 Jan 2009
Posts: 5
Location: Nottingham,
United Kingdom

PostPosted: Sun Jan 25, 2009 12:12 pm Reply with quote

is the 901 the same system as the 701 optimas
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sime2009

from United Kingdom

Joined: 25 Jan 2009
Posts: 5
Location: Nottingham,
United Kingdom

PostPosted: Sun Jan 25, 2009 11:02 pm Reply with quote

i stripped out the PCB and inspected the fan relay more closely, and removed top cover. the contacts are as blackend and charred as a drunken fry up. cleaned contacts and repositioned backed off contact, refitted board and nothing! no fan waggled relay and fan cut in icon_lol.gif so therefore its got to be the board!
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Slugbabydotcom

from United Kingdom

Joined: 10 Mar 2005
Posts: 3495
Location: Middlesbrough,
United Kingdom
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PostPosted: Sun Jan 25, 2009 11:45 pm Reply with quote

Don't dare buy another boiler, them things are bulletproof. I fitted its predecessor a 77f for my sister in 1993 and never touched a thing until last year when it needed the PV pumping up and a new PRV because the old one had leaked for the last 7 years. Yes they are partial to the odd pcb and there are a few common faults but once you fix them they generally stay fixed for a long time. You can't say that for modern ones which only have a design lifespan of 8 years.
BTW that fix usually gets you about 3 weeks. It'll be the VMF7 board and the relay is top right. I wish I get get hold of some of those shrack relays I have loads of old boards kicking around
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nickso

from United Kingdom

Joined: 30 Oct 2006
Posts: 6246
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PostPosted: Mon Jan 26, 2009 12:38 am Reply with quote

bulletproof my a**e. i have the misfortune to have several on my patch, bloody awful things.
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Agile

from United Kingdom

Joined: 26 Jun 2004
Posts: 51194
Location: London,
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PostPosted: Mon Jan 26, 2009 1:13 am Reply with quote

15 years ago in Brum they were every third boiler installed!

They had a reputation for fit and forget.

Tony
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