AC unit starting current too high

[Tajudding]

I have an AC split unit with 2.25 HP
Whenever the AC is started , the fan starts normally but when the compressor starts to run, the protection fuse trips.
I replaced the fuse but same problem
The fuse is 26 amp rating

The AC used to run normally for 5 years under the same fuse

What are the reasons that might lead to draw that high starting current?

Regards
Tajuddin

 

[Nigel Goodwin]

If it ran OK previously either the AC is faulty (drawing too much current) or the 'fuse' is faulty (blowing at too low a level).

 

[MaxHeadRoom78]

It could be the start/run capacitor failing, if not the compressor itself may have a mechanical problem.
Max.

 

[Tajudding]

OK. Can the capacitor failure cause to consume that much starting current?

 

[MaxHeadRoom78]

Yes, Particularly if it happens to have a start cap as well as a run cap, the start cap is only intermittent rated.
Max.