hi, got a baxi solo 15 he. I had a gas leak on my cooker hob. Gas man turned the mains off. I then isolated the hob and turned the mains gas back on. Now the boiler won't ignite. Power light is on but the red 'lockout' light is on. I've pressed the reset button (lots of times) in case there is an air lock but the lockout light keeps coming on - no green light (burner on) light. Any ideas? - skint and can't really afford engineer. Any help appreciated.