Just moved to house so can't say it was ever working ok - the only external is the basic Danfoss TP5 which I can't see being the cause of this problem - but I'll have a closer look at the wiring - many thanks
The boiler fires up and provides H/W on demand and C/H - but operation of the front panel 3 position switch "water/off/heating & water" has no effect - the boiler is always in the "heating & water" mode - even when "off" is selected the boiler remains in "h...
