Last but one visit to Waterlily found the central heating pump not working. The pump is a little noisy so I feared the worst. However on further investigation I tracked the fault to a failed pipe thermostat I put into the system a couple of years ago One of the benefits of blogging is I know it was October 2008.
As we will be leaving the fire in and pump on I did not want it running unnecessarily so I have just wired in the replacement, set it to just over 40c and we will monitor it. It does sometimes wake us in the night but then it is just doing its job - when the pump does fail I will replace it with something a little quieter.