no domestic hot water?
burner going of after 2 or 3 minutes and on?
expansion tank vent pipe overflowing?
central heating working but no hot water?
were do I get a diagram and information on airpressureswitch 105he?
gas neoon flashing?
max of 50 degrees hot water?
no hot water and pressure valve is on red and water is leakiing outside?
pressure switch?