Problems with Potterton Puma 100e Boiler - fuse keeps blowing please help!

[Billyf100]

Hi, I would be grateful for any help or advice anyone can give me! I have a Potterton Puma 100e boiler and the 2 amp fuse on it keeps blowing.

i have tried replacing the fuse twice and when I put the new fuse in the red light comes on however when I turn the tap on to get hot water the fuse blows.

any help or advice on what could be causing this problem would be great!

Thanks

 

[mountainman]

Could be the fan.

 

[Poxi]

Disconnect 240v components to eliminate. Fan,Pump,gas valve (look for water leak from AAV on top of boiler)

Probally pump.

 

[nysk2008]

3amp fuse

 

[Roger Welton]

As above rule out 240v components, though be aware to access the fan you need to be GSR sa it involves opening up the boiler, this seal is safety critical.