Oil central heating boiler squealing

[Will Johnston]

Hi, today I turned my central heating oil boiler on at the switch inside and it seemed to fire up but the water didn't get warm so I checked and it has locked out so we pressed the magic eye (start button) under the boiler front cover on the motor. It fired up and is working but it's making a squeezing noise not very high pitch but it is squeeling I have a video but it won't let me post it.
It had a used replacement motor fitted about 2 years ago and has been fine since.
Any ideas.
Thanks

 

[SJB060685]

Most likely bearings on that second hand motor.