Hi guys need some opinion.

I am using Joven 830i for my water heater. Today i realized there is no green light but the red light is on by itself after i switch on the main switch. But the red light is a bit dull. It will be brighter if i turn on the heater.

Water pump works ok. Tho the red light is on but the water is not heating up unless i switch it on. Normally, once i switch on the main switch the green ( indicator) will light up. Is it just light issue? Coz for now it works ok. It's just the light not function as it used to be.

Thanks for any feedback.