Just to give an update.
The problem was with the Honeywell Smartfit Base Unit which controls running of boiler and the pump.
The Micron 40FF boiler has no bearing on the pump.
Purchased the Smartfit Base Unit for 68 pounds and replaced it in 45 minutes.
The lowest quote I had received for parts and labour was 240 pounds. Seems I've saved 172 pounds.
Now I am off to get a hot shower.
Thanks everyone for helping.
The problem was with the Honeywell Smartfit Base Unit which controls running of boiler and the pump.
The Micron 40FF boiler has no bearing on the pump.
Purchased the Smartfit Base Unit for 68 pounds and replaced it in 45 minutes.
The lowest quote I had received for parts and labour was 240 pounds. Seems I've saved 172 pounds.
Now I am off to get a hot shower.
Thanks everyone for helping.