The low water pressure warning light has activated on my Puma 80/100 combi boiler, thus preventing by boiler from `firing up'. The water pressure dial shows the water pressure as OK and I have increased the pressure (within safety limits as indicated on the dial) in an effort to cancel the low pressure warning light. The warning light remains on. How can I rectify, so the warning light is deactivated and my boiler can operate normally?

Nick, October 2010

hi if the pressure gauge states at least 1-1.5 on the pressure gauge the low pressure gauge is blocked it has two wires coming from it both orange if you pull one of the wires from the switch (one by one) does the red light go out if yes the part needs replacing we stock this part in our e bay shop universalheatingsparesuk

byron universalheatingsparesuk, October 2010

water pressure sensor will need to be removed and cleaned or replaced.

Ian, October 2010