Entrance hall heatng control

When left 12/21, we turnee the dial to the half moon which the Dimplex Instrucation manual, calls economy and all the radiators set to 5. Note the radiators are not temperature controlled.

The heating comes on. The times have not been changed for several years:
Circuit:
1 upstairs,2 Utility,3 Entrance and 4 Lounge: 7am-9:59am

2 Utility: 4pm-8:59pm

1 upstairs,3 Entrance and 4 Lounge: 5pm-9:59mm