I HAVE A WALL MOUNTED BAXI SOLO 2 40PF CENTRAL HEATING BOILER. I HAVE HAD IT OVER 12 YEARS WITHOUT PROBLEMS UNTIL NOW. IT WHINES VERY LOUDLY WHEN SWITCHED ON. HOW CAN I FIX THIS.

DAVE, September 2006

Hi,
I just changed the circuit board on my baxi, but it still wont light up.
The problem started when i noticed that when the hot water & heating wont light up together.
(Could it be the timer ST9400C ..??)

When turned on the lights show "Boiler & Fan" & there's a faint humming sound (fan maybe).

Any help would be nice.
Thanks for taking the time in advance.

James, December 2011

could be fan. could be pump .may be air in system.

paul, September 2006