Hi Folks - not been into the garage for the last couple of days due to the rather low temperatures but you have all given me lots to think about! What makes matters worse for me is that the same thing happened last winter too. I tried all the usual checks to no avail and replaced the relay - naturally, then one day the pump suddenly kicked in and away we went - I have absolutely no idea why, but she ran beautifully for 9 months before this episode. I put it down to being a Morgan but clearly there is a gremlin to be found lurking somewhere! I will post again when I have news.