no hot water and pressure valve is on red and water is leakiing outside?
gas neoon flashing?
water goes cold during shower?
30 degree / flame neon flashing?
what does F14 mean and F5?
burner going of after 2 or 3 minutes and on?
dhw continues to run even though the taps are off?
presure goes up ?
should my central heating pump run all the time ?