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re lag the pipe then wrap razor wire or barbed wire around it, guaranteed results.

hi mate, do you no how old your boiler is as there are 3 different models of highflow 400? are your temperature controls on the left or right hand side of the control panel?

the salus stat works on a different frequency to the drayton so you will have to replace both, but like i said a new salus rf stat is cheaper than the drayton receiver and more reliable, have a look on ebay.

if its a honeywell valve remove the cover from the actuator head, underneath the synchron motor you will see an arm, put the dhw on and make sure the arm pushes the button on the microswitch, you should here the microswitch make, if the arm does not reach the microswitch theres a few things you...

the worcester cdi has a pre purge cycle, so if the boiler has been switched off or has not been used for a while it will automatically go into the pre purge cycle for i think between 2 to 4 minutes.

blocked condensing heat exchangers (water ways too narrow, but down to installer not flushing correctly). blocked venturis, leaking diverter valves, and actuators. like i said they are not the best but not the worst! for the price they are ok if installed correctly, that is why i said do not...

the salus stat works on a different frequency to the drayton so you will have to replace both, but like i said a new salus rf stat is cheaper than the drayton receiver and more reliable, have a look on ebay.

hi mate, in my opinion biasi are not the most reliable boilers on the market by far, when you said you had changed the diaphram are you sure it was the dhw diaphram because i could have sworn that your boiler didnt have one, it has a dhw flow sensor, the only diaphram is on the primary circuit...

hi, if your combi is an INTERGAS boiler you can use it as a multipoint (dhw only) with the heating system drained, if not you would have to loop the flow and return together a minimum of 1m from the boiler as a temp fix.

does your valve have a removable head?

hi mate, i would say that its definitely your zone valve, it sounds like the valve is opening but not quite reaching the micro switch, you could try removing the head (actuator) from the valve body and check if the boiler fires, although the earlier drayton valves were made with a fixed head so...

hi, whilst the covers are off the actuators as in the photo check that the levers inside the actuators are opening far enough as to touch the microswitch when there is a demand for hot water.

:idea: hi again, the faulty relay is a common fault with the drayton digistats! my advice to you is (dont buy a new drayton receiver, you can get a TOWER or SALUS rf stat for about the same price or cheaper! and they are more reliable in my opinion. hope this helps. :?: :idea:

hi mate, your problem is a faulty relay in the receiver unit, its receiving a signal from the stat but will not bring the heating on.