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bout 60 to 70 for the diverter and easy to change if you have manual and a mechanical mind.just make sure u isolate electrical supply and drain the boiler.dont need to drain system just isolate boiler not forgeting to replace any lost anti corrosion agents

should have a benchmark filled in gas safety sheet and minor works electrical form

was he called bodgit or scarper !!

duo tec good boiler and it comes as a platinum with a 5 year warranty too if u choose.simple to work on and plenty out there

watching this one with interest. hope it is the boiler cover he taking off !!

hmm have to remember that one sounds like a good educated guess

the duo tec good reliable boiler n simple n plenty of them out there.

yep is just for hot water

get a engineer to check or change the probe .pcb,s on the 105 pretty reliable more often than not they just need a clean and adjust esp if does not happen all the time

almost certainly ionisation probe problem then very simple n cheap but supposed to be gas guy.could even just need adjusting n cleaning.only other thing it could poss be has anybody done electrical work recently because the boiler is polarity sensative and stops this probe from working if live n...

it does add to the bill slightly but is more of a noise nuisance if in house really kit cheap n diy to fit

it fires when the heat exchanger plate falls below a certain temp.waste of time really unless hot outlets 6 foot from boiler.new boiler has preheat disable switch on front

then sounds like ionisation probe faulty which is faulty which again is cheap to buy butttt you are supposed to be gas reg to change!!.baisicly there is a small voltage passed through the flame to prove gas has light if this sensor is not working it will not allow boiler to continue. does gas...

when the fault occurs check to see if after the fan starts that you get a healthy spark to ignite the gas.if not it is almost certainly the aps air pressure switch.this switch proves to the boiler that fan is running correctly

need to know how far boiler progresses through its cycle ie pump fan ignition proof of ignition. there are many things it could be need to know what step it is failing at.random guess is airswitch these are common failing on this boiler and cost bout 15 qiud and 5 min to change

ideal do make a kit to disable this preheat function very easy to fit.

need to know what fault code comes up ie what led is light .the user manual will explain these

fault 4 ? what does it say in the user guide for this fault. do u mean the fourth led

is it a straight forward mixer or thermostatic mixer makes a difference.if its a thermostatic check the cartridge

could be leaking in a downstairs underfloor cavity even with downstairs rad valves shut