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hi i have been an engineer ref 001465 for over 25 years and at last companies are refusing to sell parts to anyone without a corgi licence i have heard from jan 1st 2008 all companies will have to comply by law it's about time so we can get rid of the endless cowboys who think they can...

i am working on a baxi 80 the fan is going on and off, on the 50 red light flashing showing there is a fan/flue fault,i have changed the air pressure switch to no avail, would it be the venturi, would there be any other reason why the fan is cycling on and off quickly,many thanks heating tech

please can someone please tell me how to find a neutral wire please,so that if an incorrect wire has ever been used in a house i will be able to indentify by carrying out an accurate test to find the neutral by means of a multimeter etc. i am a acs and oftec heating engineer. thanks in...

hiya everyone could someone out their help me please,when i install a boiler etc and a new room thermostat is to be fitted it can be very confusing as to what wires are what,find the live no problem and the earth wire is normally used for a switched live,naughty and i have always tagged it for...