If you want to factory reset invt Goodrive170-PV or GD170 drive then follow these steps:

Step 1: First press "PRG" button then display show "P00".

Step 2: When display show "P00" then press "DATA/ENT" button then display show "P00.00".

Step 3: When display show "P00.00" then press "UP" button and goto the parameter "P00.18".

Step 4: Press "DATA/ENT" button and enter "1" then again press "DATA/ENT" button

After this all parameter reset to the factory default.