LG WD-10390NDK Washing Machine - Error PF and PE, Power Outage and Unfinished Cycles

A 7 year old washing machine sometimes displays a PE error, it works fine after being turned on again. The error mentioned above in these washing machines means that the washing machine has a power outage. Sometimes it does not display the washing time on the cotton program. The rest of the action was impeccable. I checked: connections on cables, heater has no leakage, water pump. The owner also told me that sometimes he does not finish the washing cycle, i.e. he stays about 3 minutes and does not reach the moment with the melody at the end. After checking my cycles were ok. I'm afraid that's not the end of the solution.
What did the gentlemen suggest to check?

stiff12 wrote:

I'm afraid this is not the end of the solution.

Check the condition of the power cord, network filter, etc. generally 230V supply to the programmer. I had a loose connector, the accident happened accidentally.

There was a loose connection at the water pump, I was wondering as if interrupting while the water was pumping out. The PE error does not recur. Regards and closes.