Recent: Lg vcr?

Mend > Plumbing

Mend Saunier Duval Thelia 623 Boiler Heating

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 refilled, bled etc. Now it will produce hot water just fine but will not fire the radiators. The water pressure is just fine and I have checked the water loss sensor, again fine, any ideas please?

markus
August 2008
Saunier DuvalSaunier Duval Thelia 623D.I.Y, PlumbingSaunier Duval Boiler Heating
Is the pump running. Does the boiler fire at all in heating Unplug the timer this puts the boiler in the on position. it will also prove the clock. If no improvement. Were THE ISOLATING VALVES ON THE JIG TURNED OFF ?.

Bendan
September 2008
try moving the reversing valve lever between dhw and ch. when you turn on the timer for ch , are you hearing a click from the timer? these were a fairly common fault on 623's and cannot be repaired. sometimes isolating at the spur for a minute or two can reset them

kieran
August 2008

Automatic Answer

We may have found other answers which could help you.

Click here for Saunier Duval Boiler Heating

Related Questions ...

Mend Saunier Duval Combi Boiler Central Heating
1

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... [Read more]
Mend saunier duval boiler hot water
1

saunier duval isomax c/h and hot water working but not hot?

Saunier duval isomax, when i run the hot water it works fine for 5 minuits due to it having a storage tank ins... [Read more]
Mend saunier duval condens
1

how do i fit a timeclock to a saunier duval isotwin condens f35e?

i can't find any info on how to fit i timeclock to the boiler as a client wishes the heating to be timed.would... [Read more]
Mend we got manual
1

saunier duval 2002 model lossing presure we havent got our manual?

our boiler has been lossing pressure and therefore our heating has been going off, me and my partner bought ou... [Read more]
Mend D.I.Y, Plumbing

looking for a part?
Mend saunier thelia duval

SAUNIER DUVALL THELIA 623?
Mend heat exchanger Saunier Duval boiler

Where to find?
Mend Saunier Duval Boiler Pilot Light

how can i relight my saunier duval F23e?
Mend duval help find

I need a Flue restrictor and seal for a Saunia Duval F24E?
Mend boiler radiators saunier duval

Saunier Duval F23e radiators get hot when using domestic hot water only?
Mend saunier duval working

How can I fix my Saunier Duval 8DN 200v water heater?
Mend boiler fan fires

saunier duval 620f?
Mend Saunier Duval Boiler Fault

Saunier duval Thema F23E. Hot water does not stay constant?
Mend Saunier Duval Combi Boiler Central Heating

NO HOT WATERFILLING LOOP ON SAUNIER DUVAL SD 623?
Mend boiler leaking saunier duval

v loud saunier duval therma classic f24e?
Mend saunier duval boiler heating

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

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.
Mend Plumbing ...

Related Categories

Mend D.I.Y Tools
D.I.Y Tools
Mend Decorating
Decorating
Mend Gardening
Gardening
Mend General D.I.Y
General D.I.Y
Mend Lighting
Lighting
Mend Roofing
Roofing
Mend Switches and Sockets
Switches and Sockets
Mend Toilets
Toilets
Mend Windows and Doors
Windows and Doors

Topic

Saunier Duval Thelia 623 - Heating Not Working