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Riello 40 oil fired burner.


 
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DIYDel

from United Kingdom

Joined: 11 Oct 2012
Posts: 1
Location: Somerset,
United Kingdom

PostPosted: Thu Oct 11, 2012 12:45 pm Reply with quote

My Warmflow boiler with a Riello 40 pressure jet burner has been fine for 18 years. It is controlled by a lifestyle programmer.
Now it will not power up. Turning on the power at the fused spur supply results in a blown fuse. A multimeter across the boiler supply terminals gives a reading of about 30 ohms. Seems a bit low? No other obvious problems with the control box, capacitor or wiring. What sort of resistance should there be across the motor windings??

Any ideas? Help!!!
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oilhead

from United Kingdom

Joined: 29 Nov 2009
Posts: 871
Location: Shropshire,
United Kingdom
Thanked: 204 times

PostPosted: Thu Oct 11, 2012 7:59 pm Reply with quote

your problem can be with anything that is switched on at the same time as the burner; pump, motorised valve, thermostats etc. isolate the boiler and see if fuse blows. The burner is the last in line. To test the motor, disconnect the wire from terminal 6 of the base and put it to the live feed without the control box in place.
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BampotDelta4

from United Kingdom

Joined: 12 Oct 2012
Posts: 3
Location: Glasgow,
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PostPosted: Fri Oct 12, 2012 9:37 am Reply with quote

If you think the fault is at your boiler Del & you have a multimeter, have you tried a simple continuity test on the L or Sw/L to earth, on the appliance only. If the boiler has a faulty component that's shorting, that'll pop your fuses.
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dcawkwell

from United Kingdom

Joined: 02 Nov 2010
Posts: 3319
Location: Humberside,
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PostPosted: Fri Oct 12, 2012 12:25 pm Reply with quote

Most likely cause is usually the central heating pump.

Disconnect that for a start and go from there.
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