sjmmclark

The circuit board is configured for 50 amp and we are running on 50 amp

We purchased a new Premium Leisure hot tub 6 months ago. All winter during the coldest nights it would maintain the set temperature now all of a sudden it will heat up with cover on but once you take the cover off and get in it won't maintain the set temperature. We checked to make sure it was in standard mode and cleaned the filter but still won't maintain heat. There are no error codes coming up and the heat light is on. So the heat element is working or it would not heat up in the first place. Anyone have any ideas on what might be wrong.