Chat live - Instant help
:: home
:: add a question
:: search
:: help
:: most recent
:: unanswered
   Search: Go 
Fixed for free!
Ask Your Question
Popular

These categories may also be of interest ...

Heating, Convector Heaters

Heating, Fan Heaters

Heating, Oil Filled Radiators

Full list

... mend, fix, or repair just about anything.

Help someone
  Are you good at fixing things?  

Click here to help

Fault info.
Click here for Ravenheat repair information.
First time?

howtomendit.com costs nothing to use and you can ask a question without an account or logging in.

Click here to ask a question.

Answers

Who answers the questions?

Other users of howtomendit.com provide the answers. The more detail and information you provide in your question the easier it is for others to help you.

Search for a fix
How can I fix my
Home Heating System?
Mend it
How can I repair my Mira Shower?
Categories > Mend Heating, Home Heating Systems > Question
Q & As - mend, repair, fix heating, home heating systems, central heating, heating, cold, heating system, radiatorNavigate to ...
Heating, Home Heating Systems (31008 other questions)
Other categories
Add a question



Mend > Home Heating Systems

Question - mend, repair, fix

Viessmann Vitodens 100 30kw combi?

Any help appreciated. boiler comes up with F5 fault .In book states burner blocked, check air pressure switch. ? Changed air pressure switch and now just doesn't show anything ? Common fault ?



Dexter
November 2009

To add an answer, click here To add a new question, click here To find all other questions, click here

Answers - mend, repair, fix

Hair dryer on outside of burning chamber really works. I have been accessing flapper through kidney shaped cover for years. This time it didn't work. But hair dryer on hot did. Keep away from wires Spenser's etc.

Mel
October 2015

Thanks for the tip worked a treat

Les
December 2014

Just back from a week's holiday and found f5 fault. Hair dryer trick worked within a couple of mins. Thank you, can get on with post holiday laundry now!

Kb
November 2014

Worked a treat for me. Can't wait to rip this boiler out when I can afford it!

Thanks for sharing the tip Lewis.

Mark
August 2014

Hi guys any idea how to fix fd code

Jim
July 2014

The hairdryer and banging it worked! Thanks

John
November 2013

I replaced a radiator upstairs and when I tried to get the boiler fired up again it showed the F2 fault.. what do I do.. it's a Vitodens 100=w

steve rady
November 2013

red hot water at 1 tap (closest to the boiler ) no hot water down stairs

Paul
September 2013

Hair dryer worked a treat. great tip Lewis. many thanks. Just back from 2 week holiday to find F5 flashing at us.

Henry
August 2013

Just tried the hairdryer trick. Initially the boiler would not fire. So, as Lewis said, tapped the unit with the insulated end of a screwdriver and the boiler fired straight away. Thank you very much Lewis!

rajesh
April 2013

OMG, thank you to the OP of the hairdryer tip! It worked a treat! I have been warned about THE FLAP before, the engineer said to put talc on it.

Thank you thank you thank you, now I don't have to wait 3 days for a bath and won't have to clean the kitchen ;-p

Sad Old Boiler
April 2013

I regularly had the same problem.
I fitted a 22mm Brass pipe fitting under the flap and the base to prevent it closing fully.
I unscrewed the union nut till it was exactly the right height.
The nut is secured with PTFE tape on the threads to stop it vibrating loose.
That way the flap does not stick ever.
The flap is to stop the passage of cooling air through the boiler when it is stopped.
A tiny gap by this method makes no difference.
The hair dryer works but the fault comes back to bite you at a later date.

Bob
February 2013

nice one, used the hairdryer and up it fired, the code has gone for now.. hope it never returns!

glen price
February 2013

You are the best,I spent hole day trying to fix the boiler, I took it apart, flooded my garage, lost couple of screws, broken couple of plastics and finally I found this post. Brilliant!!!!!!!!!! the hair dryer method works perfect. Thank you so much.

Eric
January 2013

My Boiler is flagging up fault FD any ideas how to help?

Kerry
January 2013

Thanks to Lewis, a hairdryer and a few knocks we are up and running great. Thankyou

Sharon
December 2012

My combi boiler will not switch on to the radiator mode what is the fault can you help

Debbie
November 2012

hi, yes have the same problem with mine, i replaced the air pressure valve (ebay 14.99 brand new ) as it said was faulty - f5 code but still did not work, so i went on to google and found this site read all about it , tried what is said with air dryer and bingo it works -- so just a big thank you to all who has said try this ,

rich
October 2012

How do I solve Code Fd on Viessmann Vitodens 100 30kw combi

Viv
August 2012

Excelent - another use for a hair dryer - took less than 2 mins of warming the drum

Havencourt
June 2012

The hairdryer trick does indeed work fantastically, but it's a temporary fix. The problem tends to recur, usually after a cold night, so find yourself standing there first thing in the morning shivering and late for work while you hairdryer your boiler! I guess a permanent fix would require taking the thing apart to clean or replace the sticky flap thing - presumably requiring a professional.

Steve.
May 2012

LEWIS ME & MISSUS LOVE YOU.

Hair dryer worked a treat.

Your a star. Thankyou so much.

Andy
April 2012

Absolute hero, been stuck without heating and water all weekend and the engineer not coming out til tomorrow. Thanks!

Tom
January 2012

The power of the internet! Hairdryer worked a treat, coldest day of the year and now the boiler works. Excellent

CT
January 2012

Hairdryer trick does work just done it I had the F5 fault code on my boiler, put the hairdryer on full heat for 2 mins being carefull not to melt any wires, waited until it was hot to touch then turned the boiler on and it fired up straight away...thanks guys!

Eddy
January 2012

Hair dryer worked what a geezer you are Lewis.. Middle of winter storms and boiler packed in.. Lewis really you are THE man.. Many thanks

Singh A
January 2012

Can't believe it ..... This actually works !!!
Top Job :-)

Ann
October 2011

yup - solved the problem and money for me as well - many thanks

JT
October 2011

Lewis - you deserve a medal! Hairdryer worked in a couple of minutes! Thanks - saved me a fortune in call out fees etc.

P from Kenilworth
August 2011

Thank you very much for the hairdryer idea! It worked!!! Just came back from a 2 weeks holiday and the boiler showed f5 error. Thanks again!

Irene
July 2011

Same problem and fault code here too. As we have boiler cover I called out the engineer, he arrived and stated that he would need to order a gasket before even removing the cover on the main heating assembly (to access the fan unit apparently). This would mean no hot water or heating until the part arrived, which was in three days!! So much for 24/7 cover.
I followed your hairdryer advice after he left and had the boiler running within seconds. Cheers guys, great help.

Mike
June 2011

hairdryer sorted it out for me too . great tip saved me a few pennies thanks a lot

ste darlo
April 2011

Hairdryer worked for me too, thanks a lot , great help

Ian B
April 2011

Lewis - thanks hairdryer treatment sorted it out (just as the British Gas homeserve guy appeared as well!)

Mick
December 2010

dont know whether this helps anyone but i had this problem friday just gone 10-12-2010 f5 flashing red light i took the front off the boiler and to the right in the top half of the unit is the fan it sits right at the edge and works its way back to the middle of the unit this is where the flap is sticking, i got the misses hairdryer put it on the hottest setting and ran it over the fan area and all the metal bits that are attached to the fan this allows the sticky substance that keeps the flap stuck open to release itself i left the hairdryer on for about 5 mins and turned the water on halfway through to help it to start up if it doesnt start up use the rubber end of a screwdriver and gently tap the fan and one of the other units this should sort it hope this helps msg me if your sucsessful (dont touch any wires as they will shock you ;-)

lewis
December 2010

If you still have the problem it is probably down to a flap that gets stuck. It's situated between the outlet of the fan and the inlet to the burner. I had the same problem everytime I left the house on holiday. When I came back, due to under use, the flap would be stuck. It has to be removed, washed & dried before replacing. A Gas Safe engineer will be able to do this quite easily as everything is accessible. Don't know about you but I've had my Vitodens for almost 4 years now and if I could afford to replace it I would! Viessmann made this boiler for the UK market without knowing what the UK market is like. Service wise, Veissmann are bad. They just didn't want to know. The independant engineer that came to my house knew what to do as he had one too. It's one of those faults that they are actually aware of but don't tell you. I ranted on at them for over an hour on the phone and in the end they sent me the replacment part. It was either that or pay £270 to call out an engineer to come and do it!

Hilly1970
August 2010

To add an answer, click here    

Add An Answer Form

Add your answer using the form below ...

The question: Viessmann Vitodens 100 30kw combi?
Your answer:

(Add your answer here. Try to include as much detail as possible.)
Your name:

(Enter your name as you wish it to be displayed.)
Other questions in this category - Heating, Home Heating Systems
Ideal icons boiler display panel?

Hi I have an 8 year old ideal icons he24 conventional boiler. I have come to light it but the display panel shows Dash with a dot below it. There are no other letters displayed...

Click here for the answer
high pitch whistle on a aa200 hot water boiler?

how can i fix a hich pitch whistle on catering hot water boiler...

Click here for the answer
How to increase water pressure in SIME format 34 boiler.?

I have a SIME format 34e boiler and water pressure drops to zero. I cannot identify the right pipe to fill water for increasing the pressure. Any one has idea how to fix this problem?...

Click here for the answer
Baxi 105e?

I have a Baxi 105e boiler, it has started to heat the radiators when the hot water tap is run. I've replaced the diaphragm in both the Hot water and Central heating diverter valves, and made sure that the switching pins run smoothly. When I set Central heating only, the pin on the CH diverter swi...

Click here for the answer
fault code meaning?

I have a isar he30 boiler fault code 3 lines anyone no what it is...

Click here for the answer
drayton digistatrf1 wireless system?

Changed batteries in wall control how do you reset system as fault light is showing on receiver at boiler unit...

Click here for the answer
Worcester 28i junior, water temperature is far too hot...?

Water temperature is nearly boiling not responding to temperature adjustment on front of boiler I've replaced PCB any ideas on what else could be causing this problem fault light flashes once per 2nd to indicate ignition cutout/boiler overheat ?...

Click here for the answer
burner goes out after short time?

in heating mode burner comes on and after short period of time goes out.After a short period it comes back on and then goes out again.With a tap running,burner lights up and goes out after short period of time....

Click here for the answer
Fix what?
Navigation, Satellite Navigation - fix/mend/repair/service information
Household Appliances, Knitting Machines - fix/mend/repair/service information
Computers, Firewalls - fix/mend/repair/service information
Help wanted!
Help - Can you help answer these questions?
washing machine overfilling?
(Added recently)
ford 7740 sle year 93?
(Added recently)
54reg zafira petrol?
(Added recently)
hotpoint dishwasher not washing?
(Added recently)
steam generator iron?
(Added recently)
Advertisements
Fixed!
So happy I found this site. Thank you all for saving me hundreds of Pounds

Sarai
Jul 2017


Mend it
How can I remove a Bra Wire from my washer?
All appliances!

To mend any household, kitchen, or other electrical appliance start here.

To search for repair advice click here.

To find out how to mend it click here.

Mend it
How can I mend my Toyota Estima?
Fault find
Click here to fix Blaupunkt products.
Advertisements
Important

Attempting repairs can be dangerous.
In many instances work should only be undertaken by a qualified professional.
Ensure you have read our Small Print page before using information supplied via this website.

©  2003..
We use Cookies. See our Privacy Policy.