saunier duval thelia 23 when i use the boiler a screaming noise?

using the boiler there is a loud screaming noise the fan is on all the time and have to turn it off from the main switch the boiler is saunier duval thelia 23

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I have a saunier duval combie boiler?

It only boosts for hot water from a tap. it doesnt boost when i put the heating on and the radiators are cold.

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Saunier Duval pilot light keeps going off…?

We had a Saunier Duval boiler installed a year ago and it's been nothing but trouble. The latest thing is that the pilot light goes out and you can't reset it unless you turn it off and on again at th ... more

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saunier duval 30 e?

just using hot water is ok. when central is on the pressure increases to over 3 bar . dicharging water via safety valve then pressure drops to 1/2 a bar.

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No hot water coming from the boiler?

I hope someone can help. I had a small leak in my kitchen which was easily repaired but the mains water had to be turned off. Now that it has been turned back on my Saunier duval f23e combitek boiler ... more

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boiler lock out no hot water?

saunier duval 30e. boiler locks out when hot tap is opened, if hot tap is opened while boiler is fired up for heating I then get hot water. thanks in advance for any help

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How can I fix my saunier duval 620F?

I ignite it properly and pilot light swithes on. We get hot water for about 30 secs then it cuts out completely. This also happens when put on central heating. Could anyone please help.

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Saunier Duval SD623F?

How can i fix my Saunier Duval SD623F/VF It does neither get hot water nor heating. It seems that the primary high voltage powercircuit does not supply power to the transformer to get the 24V for t ... more

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Saunier Duval Thelia 23- no heating/hot water?

The problem seems to be the clock/programmer. With the slector switch set to 'auto' the display will normally show the current time plus 'on' or 'off'. When it plays up there is no time in the displ ... more

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how to fix timer on Saunier Duval boiler?

The timer on my SD boiler doesn't go around as it should. I can hear it ticking when I put my ear close and if I turn it to the correct time manually the central heating will kick in. Saunier want £1 ... more

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i have saunier duval thelia 623 which won't fire the heating any ideas?

The system had to be recently drained to fit a new radiator. It was then refilled (to correct pressure) and worked just fine, the radiator had to be removed and re attatched. again system drained and ... more

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Saunier Duval Thelia 623 has hot water but no heating help?

For the last 4 weeks i have had the boiler on Summer mode ie just used fof hot water which is ok , but when i recentley switched it to winter mode ie slid the slider to hot water and central heating. ... more

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heating?

the red light on the saunier duval 30e is flashing, also there is water dripping from underneath the boiler.can you help me

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NO HOT WATERFILLING LOOP ON SAUNIER DUVAL SD 623?

SAUNIER DUVAL SD 623 COMBI BOILER PRESSURE AT ZERO BAR HEATING OK BUT NO HOT WATER. FILLING LOOP PESSURE LOOP THERE ARE 2 BUTTERFLY TYPE DEVICES ON EACH END OF LOOP +ON THE TOP MOST CONTION JUST ABOV ... more

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what?

what does fault code 01 mean on saunier duval mean boier wont stay running stops after 30 seconds58

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no heating or hot water?

my thema classic has no hot water or heating, it is at correct pressure and the fan kicks in when tap is opened but the gas burner does not ignite any ideas. p.s its a saunier duval but the type made ... more

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how can i fix my Saunier Duval boiler?

how can i fix my saunier duval boiler (thema f23 E)after someone bled the radiator with the system still turned on resulting in the pressure dropping to below 1 (red) whilst as i say the system was st ... more

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Saunier Duval Thelia SB 23 - pilot won't light or stay lit?

The pilot will light with a match but there is no 'spark' and if lit with a match , the flame dies when the 'ON' button is released. The fan runs - at slow speed, while button held in

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Failing hot water on a Saunier Duval F30E Themaclassic combi?

I have a 4 yr old Saunier F30E standard combi running on natural gas and the hot water is failing dismally. However heating works AOK. Symptoms- turn on hot water, boiler fires, flame spreads ... more

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have got heating but no hot water on saunier duval 30e?

Any one have any idea how to repair heating is working but pilot not igniting when hot tap turned on

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