In OT3.0 the HB flag8 have these description:
bit:description {clear/0, set/1}
0: CH enable [CH is disabled, CH is enabled]
1: DHW enable [DHW is disabled, DHW is enabled]
2: Cooling enable [Cooling is disabled, Cooling is enabled]
3: OTC active [OTC not active, OTC is active]
4: CH2 enable [CH2 is disabled, CH2 is enabled]
5: Summer/winter mode [winter mode active, summer mode active]
6: DHW blocking [DHW unblocked, DHW blocked]
In OT3.0 the HB flag8 have these description: bit:description {clear/0, set/1} 0: CH enable [CH is disabled, CH is enabled] 1: DHW enable [DHW is disabled, DHW is enabled] 2: Cooling enable [Cooling is disabled, Cooling is enabled] 3: OTC active [OTC not active, OTC is active] 4: CH2 enable [CH2 is disabled, CH2 is enabled] 5: Summer/winter mode [winter mode active, summer mode active] 6: DHW blocking [DHW unblocked, DHW blocked]