Baxi Heat 412 User Manual page 17

YES
is there electricity to
the boiler ?
nO
Check the fused spur to
the boiler is in the on
position.
YES
if the boiler fails to
operate. Contact your
installer.
if you don't know what you need
to do to get the boiler to light, or
need help with the system and
controls, contact your installer as
7668917-03 (1/19)
YES
ignition Spark will commence
Switch on.
nO
Chimney Sweep /On
Button /Light
Reset
Button/Light
soon as possible
YES
Boiler flame established
(Both lights are on)
YES
Boiler operating
satisfactorily.
Operation 5
nO
400 Heat 17