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Alright guys, another problem which i havent actually been to investigate but the blokes a plumber i know so ran through it over the phone....
Basically if he turns heating on, heats up fine no worrys. however if he then turns ho****er tap full bore at same time boiler will lock out after 20 seconds or so...however if he cranks the isolation valve down on the hot tap and runs both heating and hot water boiler doesnt lock out?????
If he just runs hot tap full bore and no heating boiler copes with the demand. anyone ever come across this?
Basically if he turns heating on, heats up fine no worrys. however if he then turns ho****er tap full bore at same time boiler will lock out after 20 seconds or so...however if he cranks the isolation valve down on the hot tap and runs both heating and hot water boiler doesnt lock out?????
If he just runs hot tap full bore and no heating boiler copes with the demand. anyone ever come across this?