Search results

is it a 35ci it could be the pump are there any fault codes bit more info needed.

you say the engineer replaced the prv did he check the exp. vess. pressure as mentioned previousely.if not get him to check it also the exp. tube if blocked will give the same symptoms i suspect one of these is the problem.

The secrets out will try vaillant or veissmann next worcester wont play ball

when you say heat exch do you mean the d.h.w one these are prone to blocking especially after power flushing and is a common problem on all combis the flue condense have been modified because the early ones leaked ,from 2003 there have been no problems the vaillant ecomax used the same part and...

It could be the cvi unit playing up this affects the fan and sensing leads as well as the gas valve

could be its blocked boiler side due to black oxide due to constant filling either renew or try to unblock filling loop or fit extyernal one but you will have to adress loss of pressure problem sounds like a leak on your system can easily be proved by isolating flow and return valves leaving...

it could be the divertor valve cartridge spinning sometimes this occurs .The only solution i have found is to change cart. it is usually due to syst water[thats if we are talking about the thema model]

Is there such a thing as a dual fuel boiler in the market, commercial or domestic if so what make and how many k/w

could be air pressure switch check at the top r/h side if its a black switch could be faulty they have been changing to newer grey ones

To test the cvi unit take it off the gas valve call for demand set your multimeter to DC put your probes in the holes furthest apart you should get between 250 and 300 VDC

I was refering to the boiler stat turn it to a lower temp. its not difficult as for the pump staying on sounds like your problem is a motorised valve sticking no point in going into depth on this subject as you have not got the confidence to alter simple boiler controls i suggest a heating...

the system pressure will fail only if it is sealed system they can be fitted to open vent as well

sounds like it could be o/heat problem is the left hand light staying on if so because this boiler has not got pump over-run they can lock out probably partially blocked heat exchanger try running it at a lower temp if this cures it unblock or change h/exch

are you saying pump not working if its high pressure prob. exp vessel need recharging or replacing or micro switch faulty i personally would not spend money on it would go for a new one but its your choice weigh up the cost of repair and future reliability against replacement

forgot to mention they have had problem with the by-pass letting bye so it may need changing as well.

you can buy the cartridge seperately i changed one yesterday because it was spinning and noisey try pushing the pin in manually with the tap running might free it they normally go becuase of muck in the syst. so iwould check the dhw h/exch. as well once youve changed one fairly easy first time...

All the other switches s/be off not sure what they do some control pump best turn them off

When he comes back ask him to check the trap is draining by gettiing a small watering can and tipping it into the h/exch. tray this will verify it is draining/ not leaking if accessible do the same down the flue this will confirm fan not leaking and inner flue is ok.

could be a faulty gas governor on the meter sticking and freeing intermittently have had this on new installations.could be condensate partially draining the siphon has a cut out if it gets wet on top of the siphon it will run fan but not ignite .had one the other day dripping on the cut out...

the micron 60 upwards has not got a jumper the 30/50 has the jumper