Thanks Tony,
Having looked into this further by checking the manual schematics, I realised that I replaced the DHW sensor & not the CH sensor by mistake - the error code shows CH sensor faulty & I didn't realise there were actually 2 separate sensors!
I'll purchase another & replace ASAP...
Hi,
My 105E developed a fault which indicated temp sensor fault (80 flashing)
I changed the sensor no problem but did not apply the heatsink paste as I did not have any. Initially the problem seemed to go away but has returned?
Could this be due to the lack of paste? If so, where is this...