Central heating pump faulty ?

[Unregistered]

Wilo pump RS15 when central bleed screw is removed lots of water shoots out
rather than a dribble does this mean impeller is not spinning boiler is restarting every 30 seconds
any clues please

 

[Chalked]

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Also, would be polite to introduce yourself.

 

[Rickster123]

Please register and repost for an answer. Thank you.