Hello terry fry,
Thank you for writing in and sorry for the inconvenience caused on you.
Could you please send us an email(service at droking dot com) to tell us more details of how you operate the product, such as the input voltage/current, the wiring, the load, the working environment?
If you can, we sincerely hope that you can send some images or video to let us check the problem details.
Waiting for your reply and thank you for your cooperation in advance.
Best regards

Hello Muhammad Asif,
Thank you for writing in.
There is slight mistake with the picture before but we have amend it, please check it.
The turn light is an indicator that indicate if the device is charging or full-charged.
When the device is charging, the turn light is red; when the device is full-charged, the turn light is green.
The potentiometer for the turn light is used to adjust the turning point current value between charging and full-charged.
Here is the adjust instruction:
After setting the output voltage, anti-clockwise turn the CC potentiometer about 20 rounds, then use 20A current of multimeter to short circuit output. Adjust the CC potentiometer to get the current you need to turn the light and then adjust the LED potentiometer until the turn light shows green.

Hope this can help you.
Best regards

Hello Phillip,
Thank you for writing in.
Could you please send us an email(service at droking dot com) with more details of the operation, the wiring?
It is better that you send us some images or video to let us check the problem details.
Waiting for your reply.
Best regards

Hello Muhammad Asif,
Thank you for writing in.
Here is an image that we think it is useful to you.

Hope this can help you.
Best regards

Hello John,
Thank you for writing in.
Here is a wiring diagram for you:

Hope this can help you.
Best regards

Hello Muhammad Asif,
You’re welcome.
If you have any questions, please feel free to contact us.
Looking forward to serving you again.
Best regards

Hello Muhammad Asif,
Thank you for your message.
This product can work on 3A current for a long time.
The measuring current of this product is 0.00 -3.00A (10A Max, but cannot work in 10A for long time).
Hope this can help you.
Best regards

Hello Muhammad Asif,
Thank you for your reply.
This product can work on 3A for a long time.
Working on large current for a long time, the product will get hot, which is normal.
However, this product is equipped with fan and has intelligent temperature control threshold (55℃/131℉).
When the temperature is higher 55℃/131℉, the fan will be turned on automatically.
Hope this can help you.
Best regards