FA - To Average Down or Not?

Ask the following whether to average down to accumulate or sell at loss :

1. Is the original reason for buying into the company is still valid?
2. If the reason is still valid, look at the numbers.
3. If the company is financially healthy and now trading at below what it is worth, I would look at accumulating.
4. I would then look at the charts to find a fair entry price and load up.