Hygger 902 500W Heater

[Fishyx3Netx3]

I have a Hygger 902 500W heater that came with a teardown of a 125g tank. Shown in the video is the "Water Tempeture" and "Up" displays both blinking. I am guessing there is a fault in the thermal detector. Any advise?...

 

[Rocks reef]

Maybe give this a read through.
I have no experience with Hygger heaters, I apologize.

hygger Aquarium Heater Troubleshooting Fix - hygger

The common troubleshooting of aquarium heaters and remedies for some heater faults, along with how to repair the heater and how to set a heater's temperature.

www.hygger-online.com