Potterton Promax System - No power??

[happyflyer]

Hi guys,

After a long day I got sent to have a look at a Potterton Promax System boiler.

All lights off. I checked the fuse spur. No power in or out.

switch at the board had tripped.

Turned back on but fuse would keep blowing.

No leaks visible in boiler, no loose connections that I can see.

The pump at the cylinder has had some leakage. Disconnected the pump and tried the power again. Still trips and blows the fuse.

Any ideas??!!

I have probably missed something but was at the end of a long few days and wasn't exactly focused.

Thanks

One of the worst things you can do is to keep resetting the breaker, the fault should be traced with a meter before applying the power, if the MCB has tripped the first time there was a reason, never reset it even the first time you see it tripped.

Its a bit like a manometer-less electrician testing for a gas leak by sense of smell only.

Glad you found it.