Checking pump on Avanta Plus 35c

Is there any easy way I can see if the pump is OK on my boiler ? The manual states stuff like "turn the spindle with a screwdriver" which would be helpful if I knew where the spindle was Other stuff states remove chrome centre screw to vent pump and spin the shaft to check the impeller can move freely ?

Are there any easy checks and would venting the pump do any good or am I more likely to flood the house

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the spindle is under the screw marked bleed

you will get some water out so have a cloth handy

have you checked your plate heat exchanger as per your other post? if your heating's working its unlikely going to be the pump.

Thanks kevplumb.

I think fiddling with the heat exchanger is beyond me, micky. I was hoping to find some easy fix if that's all it needed but think it's beyond me and will have to get someone in It works ok for a while if you like a shallow bath but then cuts out and is now giving a E1 error which also mentions the pump but I imagine it's more likely to do with the hot water flow not being sufficient and it tripping out because the temp is getting too high

I've no idea if the hot water side of the boiler also uses the pump to maintain flow or just uses the normal mains water pressure to push it thru