Thanks for the reply, I did check the pressure switch, which appears to be working OK in that it clicks when the water reaches its lowest level and clicks again as soon as the water starts refilling.
I also removed it to enable me to blow down the inlet tube to check the action of the switch by using a meter, again I found that it operated OK.
Is this the correct way to check the unit or should I have carried out other tests?
Regards Chris
Chris Thorne
April 2005