Boiler leaking in loft

[Archroy]

Turned on a hot tap today and after much clunking and hissing, the water turned coloured, then to steam.
I investigated the boiler in the loft and noticed that the pressure was down to zero. On refilling the boiler, water began leaking out so I have decided to once again ask this board for advice, before calling in the pros.

I took off the cover and noted that water appears to have leaked mostly from the area of the automatic air vent.

My boiler is a glow-worm Compact 100p

Any help is appreciated.

Cheers,

Steve

 

[caterhamplumbing]

Replace the aav then refill. Check for any other leaks, epecialy heatexchanger as this will be expensive if it has cracked.

Good luck

 

[Archroy]

Thanks. Had a good local plumber round earlier who changed the AAV (completely melted inside). Am now awaiting to see if the PCB will dry and work again. FINGER CROSSED.