Grant Vortex Oil Boiler Tripping Breaker

TimHorton

Hi All

The boiler is 6 yrs old and serviced yearly, It has started blowing fuse after about 15 to 20 mins of use, Currently, the Radiator Motorised valves are set to off and it is set to come on twice a day for 30 mins to heat water.

It seems heat/temp related as it comes on when cold and works for 15/20 mins then trip, If I try and reset the breaker it will trip straight away but if I leave it for 24 hrs it will work again for 15/20 mins,

Any Ideas as Plumber was due this week but no show.

MBE220d

https://www.boards.ie/discussion/2058205042/grant-vortex-oil-boiler-tripping-breaker

Was there anyone messing with the indoor thermostats, like they have been turned down,

TimHorton

https://www.boards.ie/discussion/comment/117782366#Comment_117782366

No, as there are none!

Wearb

Is it a Fused spur that's blown? What rating is the fuse?

TimHorton

https://www.boards.ie/discussion/comment/117782421#Comment_117782421

Looks like the boiler is the only appliance on that fuse. The fuse has B10 and G31 on the label.

Wearb

OK. I was a little confused by your use of tripping and blowing.

The fact that it remains in trip state for so long should leave it easier to diagnose. Its most likely some motor but could be damaged wiring. Immediately after it trips - with trip still off- feel circulation pump, burner motor and hot water zone valve for excess heat. That might identify the problem.

Failing that I'd recommend getting an electrician in to run a few tests.

FYI That system should be protected by a 5a Fused spur. If you do get an electrician out, ask for one to be installed.

Tom44

Circulation pump

TimHorton

https://www.boards.ie/discussion/comment/117786706#Comment_117786706

Thanks Tom 44, Looks like it is the pump, Gave it a few taps of a hammer and it's been running fine for almost an hour, Hope it stays that way. Do I need to replace it or should it be good for another while?

Tom44

https://www.boards.ie/discussion/comment/117787525#Comment_117787525

You'll find out soon enough, most times within 20 minutes, but you might be the lucky one.

TimHorton

https://www.boards.ie/discussion/comment/117787716#Comment_117787716

Looks like it's gone again, New Pump ?

jimf

any drip from the valves at the pump

any mice possibly chewing wires

TimHorton

https://www.boards.ie/discussion/comment/117790127#Comment_117790127

Just see some evidence of a leak from boiler.

Tom44

Jinxed

Had to replace my own pump this morning ☺️

jimf

https://www.boards.ie/discussion/comment/117790482#Comment_117790482

who you get to do that on a sunday

Wearb

Had to be some Tipp guy 😀. Although if he'd waited until morning there'd have been lots of Cork lads available.