Kipor 6700TA displaying charge fault (P5)

Check for loose or rusty battery cables. Unscrew the rear cover and locate the red battery wire. Disconnect it and, using a multi meter, check its resistance: it should have a very low value. Do the same with the other wire.
Start the generator and remove battery wires. If the voltage between them is zero then a fuse is blown.
Next open the front panel (where the display is), there you will find two blue wires with covered fuses, check and replace those fuses if found faulty.
If the problem is still there then it could be the charge regulator. Open the back cover by removing the six nuts. Near the edge you will find a component with silver cover resembling plates. There are three wires leading from it. Check resistance between these wires (one by one) and its body: it should be infinite, if not then replace it. remove the charge regulator and take it to a generator spare shop. The person there will further inspect it and will tell you if you need to replace it or repair it.
Hope this solves your problem.
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Hi
i have a kipor 6700ka the led displayed p-01 oil.lack error then i change oil.
after 3 day my generator show me same error and plus fault light get on
any solution plz