glowworm compact 100e PCB fuse blowing

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8 Feb 2006
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Location
Essex
Country
United Kingdom
Hi, I've got a 3-4 year old Glowworm Compact 100e combi boiler. Up until now I've had no problem with it whatsoever until one afternoon I noticed the boiler 'dead'. All power lights were off so after checking the incoming supply I checked the the fuse in the pcb. Thankfully there was a replacement which when inserted, the boiler fired up and worked fine again for about a week. The fuse has blow again, once again replaced the boiler fires up. (hot water and C. Heating)

I'd rather not just replace the board without checking if there is something drawing too much current i.e. solonoid/pump etc. As the fuse does not blow instantly it leads me to think that it's something else on its way out.

Any help would be appreciated
 
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It can be anything but if there is no water leaking then its probably the pump.

To check connect the pump to a 13A socket with a 3A plug fuse and leave it running 24/7 . If its the pump or boiler then the relevant fuse will blow.

Tony
 

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