anyone know much about central heating?

[Sparkie]

i've got an old baxi bermuda 552 back boiler in my house. i came home tonight and turned the heating on and the main burner isnt igniting.....

the pilot light is on.

the heater control is sending main power to the unit.

the boiler thermostat sends mains power to the heater valve unit, when turned 'on'.

I'm suspecting the honeywell gas valve is at fault, as i have gas pressure and if it was the thermocouple - that the pilot light heats then the gas stop valve would trip and the pilot light would go out too....

anyone know any better?? :(

[philr5t]

Drop Jrp a pm he knows what he's doing with boilers he's work for British gas for years mate hope this helps