On 24/03/2020 16:44, Shamra wrote:
My numatic sometime working sometimes not working but power light is
on.. Bags
and filters are looks fine.. Anyone help me what might be the problem?

I'd check the contacts which 'link' between the internal cable drum and
the motor etc.

They are quite thin and do break, also can be intermittent. Easy to
replace and not expensive (under £5) off EBay.