squelching noises!

jace7 · 29 Apr 2005

Loud water squelching noises from big radiator.Also hot and cold throughout.Other radiators are not fully hot too.Combi boiler seemed to make loud groaning noises this suddenly happened please help cheers Jason!

bobw1956 · 30 Apr 2005

Check system pressure

jace7 · 30 Apr 2005

Thanks i let air out the fauly radiator.Maybe too long but no water came out.Then switch on today its a baxi combi range boiler not much over a year installed its a 80e or 105e.Lo and behind no pressure the 60c flashing faulty pump,is it easy job cheers.

bobw1956 · 1 May 2005

the boiler will not work with out the system being pressurised to around 1.5 bar pressure,look for the filling loop which is the stainless steel hose with a valve connected, open this valve watch the preesure rise to 1.5 bar,
hey presto!!boiler should fire.

jace7 · 2 May 2005

Sent this dont know if it went through.Loosened a silver bendy pipe that goes in boiler few water drops slip out.Then try on and off boiler with radiator and hw switches on.Pressure not risen.Dont know if i got wrong pipe dont wanna blow it upp please help cheers j!

bobw1956 · 2 May 2005

What make boiler ?
have you checked system pressure.
you will find the system pressure on the small dial.
what is the pressure on this dial.
you will hear water going into the system when you open the valve.
please give more information about boiler, age manufacturer,etc;.

jace7 · 3 May 2005

I said its zero pressure i said its 80e or 105e combi maxi range i try the shower silver type bendy pipe to no avail.

jtaunton · 3 May 2005

When bobw1956 said 'open the valve' on the silver bendy pipe, he didn't mean undo the pipe, which it sounds like you have done. There should be a tap on there which you can turn (probably got a plasticky knob on it) - turn on the tap until pressure reads about 1.5, then turn it off again.....

(Apologies if I've misunderstood....)

jace7 · 4 May 2005

Hi thanks did move tap boiler heating hot water all on it lit up and was fine.But the chugging radiator was not fully hot all over especially tops otherwise all fine.But the pressure dial still stays on zero i try this both with boiler switched on and off so ive got it on theyre still to come.But what about pressure dial and not fully hot topped first big radiator next to boiler,other three and hot water fine cheers.Theyve been off since friday but no appointment til thursday earliest afternoon i can do.

semiphonic · 8 May 2005

As with most combi boilers, the baxi 80e and 105e have an automatic air vent installed inside them. If the pressure in the boiler/system has dropped to zero, when you re-pressurise it it will fill up but also air will be forced out of the vent. You will need to keep re-pressurising it until the pressure stays at 1.5 bar.
Also, you must re-pressurise the system every time you bleed a radiator, being a sealed system, when you let air out you must replace it with water!
If the pressure still drops after all this, you've got either a leak or a faulty pressure relief valve, call a corgi registered plumber

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BanziBarn · 3 Apr 2006

Hi all, new to the forum

I have a question related to pressurising my Baxi Combi.

I'm going to bleed my rads soon as they make a noise as mentioned above.

I just need some help working out how to re-pressure the boiler.

Which valve in the diagram below do I need to use? I'm thinking it might be number 5, but am a complete novice and don't want to muck anything up. Thanks for any advice

chrishutt · 3 Apr 2006

Firstly you shouldn't high-jack old threads. Start a new topic.

Secondly, none of the valves on your template are filling loop valves.

Thirdly, see the FAQ topic near the top of the topic index - look for filling loop / filling sealed systems.

Lastly, don't bother to say thank you.

BanziBarn · 3 Apr 2006

Thanks for the response.

Apologies, a lot of forums prefer the use of the same thread to avoid multiple threads on the same topic. Will make sure I start a new one next time.

Also, I did say thank you in my post.

thaddiusbile · 22 Dec 2006

Thanks very much for the info it worked very well 22nd December and no heating!! PANIC!!! surfed the net found this site and Saved me a fortune in plumbers call out fees.
THANK YOU

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squelching noises!

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