fuse blowing

[g4jbr]

Hi
the fuse on the CH isolator blew then noticed the programmer -acl lifestyleLP522, was not on...battery gone so replaced battery now programmer is going again but when I put it back in circuit the fuse blows again...is it just coincidence the battery being down?...I assume it's something more serious
cheers Pete

 

[baxpoti]

Process of elimination start, with the pump.

 

[superdupergasman]

As baxi says, disconnect the cable to the pump and try it, then move on to the next which might be the fan on the boiler.

Might be a good idea to call in an expert for that tho

 

[namsag]

Look by the motorised valves ,leaking pump valve dripping into them is the favourite for blowing fuses

 

[Agile]

A useful trick if you suspect the pump is to wire it seperately to a mains plug with a 3 A fuse!

Tony
G8ABQ