"Unanticipated combination of heating and cooling loads"

edit

Hello everyone,

I'm getting this severe error in my model:

** Severe  ** DualSetPointWithDeadBand: Unanticipated combination of heating and cooling loads - report to EnergyPlus Development Team
**   ~~~   ** occurs in Zone=THERMALZONE_F1_BATH1 During Warmup & Sizing, Environment=FRANKFURT AM MAIN 1, at Simulation time=07/21 00:00 - 01:00
   **   ~~~   ** LoadToHeatingSetPoint=NAN, LoadToCoolingSetPoint=NAN
   **   ~~~   ** Zone Heating Set-point=0.00
   **   ~~~   ** Zone Cooling Set-point=0.00
   **   ~~~   ** Zone TempDepZnLd=
   **   ~~~   ** Zone TempIndZnLd=
   **   ~~~   ** Zone ThermostatSetPoint=0.00

I know this error was discussed multiple times (e.g. here) but none of the mentioned ideas let me pinpoint the issue.

• I tried ReportDuringWarmup and ReportDuringHVACSizingSimulation but it seems to fail before any of those are even run.
• The zone appears geometrically correct and only has one window opening.
• No other errors or warnings indicate a problem that might be relevant.
• All heating schedules data in the IDF ouput looks valid and is set to be 23°C all year for that specific zone.

I'm honestly out of ideas.
The models .osm can be found here and I'd be glad if anyone could take a look.

Thanks in advance

EDIT:

I corrected my model to use SummerDesignDay and WinterDesignDay as mentioned which resulted in the error message to now include the correct setpoints. It still can't calculate the correct loads though:

   ** Severe  ** DualSetPointWithDeadBand: Unanticipated combination of heating and cooling loads - report to EnergyPlus Development Team
   **   ~~~   ** occurs in Zone=THERMALZONE_F1_BATH1 During Warmup & Sizing, Environment=FRANKFURT AM MAIN 1, at Simulation time=07/21 00:00 - 00:15
   **   ~~~   ** LoadToHeatingSetPoint=NAN, LoadToCoolingSetPoint=NAN
   **   ~~~   ** Zone Heating Set-point=23.00
   **   ~~~   ** Zone Cooling Set-point=50.00
   **   ~~~   ** Zone TempDepZnLd=
   **   ~~~   ** Zone TempIndZnLd=
   **   ~~~   ** Zone ThermostatSetPoint=0.00

There seems to be an underlying issue with the calculation of thermal loads but i don't know when/where those are determined.

EDIT 2: new .osm file