I have a Haier HWD1600 washer dryer combo that I am getting an error 2 on. It will not drain the water out and I have not been able to clear it for the past two months

Its a common error,
Error message:Drain error, water can be not drained fully within the required drain time
Reason 1. Pump filter is blocked.
Solution 1. Please open and clean the pump filter. (Filter access door is on the bottom right, at floor level of the washing machine)
Step 1.Push a flat blade screwdriver into the slot on the filter cover and pull it open ,do not use excessive force.(Fig 1).
Step 2.Remove the rubber hose from its clip and stand a suitable container under it, remove the bung to drain the water (Fig 2-3)
Step 3.Replace the bung and fit it back into its clip (Fig 4-5).
Step 4. Unscrew the filter and rinse it under running water, replace it and close the flap(Fig 6-7-8).
Caution:
1. The filter must be in place during operation, ensure it is in place after cleaning to avoid leakage.
2.Place a container under the drain pump filter, to collect any excess water that may come out of the drain pump when the filter is removed.

Reason 2. Drain hose end is higher than 100cm above the floor level.
Solution 2. Please adjust the height of drain hose to 80-100cm above the floor.

Reason 3. Drain hose is blocked or twisted.
Solution 3. Please check and clean the drain hose for blockage.

Reason 4. Drain hose is too long, or water is back filling from waste water pipes.
Solution 4. Remove any extension to the original drain hose.
Ensure the highest part of the drain hose is nearest the washing machine.Check the waste water pipes in the building are clear of any obstructions and flow freely.