As seen in the title we have a grand old lady of boilers. Well so far weve replaced a diverter valve and circuit board because we used to have to put the heating on full to get hot water. That got fixed.But....now.....we have "lock out?" the hot water only comes on if we flick up the switch to the flame symbol. Which is ok if were using the rooms near the boiler but not so great when were 4 floors up!!! Last gas engineer was stumped. Ideas please....really dont want to buy new boiler.
Thank you
Thank you