Hi We are KRN Technology From sri Lanka. I can give instruction to slove F16 error and save your money.

First Remove top cover and disconnect drain heater connection . joint 15k 2 watt Resistor bitween Heater connection and insulate it.
Now you can run your washing machine without F16 error.
If you want to use drain heater you have to buy drain heater and fix it. Then no need to connect 15k resistor.
Bye all.
I am Neville
From KRNTechnology