Can somebody help?? I am trying to get the EP example file "FanCoilAutoSize.idf" running in Hong Kong. But simply changing the EPW, location, and design conditions seems to break the model.

As you can see (https://pasteboard.co/JfC8EZ1.png) the FCU fails to control temperature in HK

I would upload the IDF files but don't have enough "points"

Basically I changed this:

! CHICAGO_IL_USA Annual Cooling 1% Design Conditions, MaxDB=  31.5°C MCWB=  23.0°C
SizingPeriod:DesignDay,
    CHICAGO_IL_USA Annual Cooling 1% Design Conditions DB/MCWB,  !- Name
    7,                       !- Month
    21,                      !- Day of Month
    SummerDesignDay,         !- Day Type
    31.5,                    !- Maximum Dry-Bulb Temperature {C}
    10.7,                    !- Daily Dry-Bulb Temperature Range {deltaC}
    ,                        !- Dry-Bulb Temperature Range Modifier Type
    ,                        !- Dry-Bulb Temperature Range Modifier Day Schedule Name
    Wetbulb,                 !- Humidity Condition Type
    23.0,                    !- Wetbulb or DewPoint at Maximum Dry-Bulb {C}
    ,                        !- Humidity Condition Day Schedule Name
    ,                        !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
    ,                        !- Enthalpy at Maximum Dry-Bulb {J/kg}
    ,                        !- Daily Wet-Bulb Temperature Range {deltaC}
    99063.,                  !- Barometric Pressure {Pa}
    5.3,                     !- Wind Speed {m/s}
    230,                     !- Wind Direction {deg}
    No,                      !- Rain Indicator
    No,                      !- Snow Indicator
    No,                      !- Daylight Saving Time Indicator
    ASHRAEClearSky,          !- Solar Model Indicator
    ,                        !- Beam Solar Day Schedule Name
    ,                        !- Diffuse Solar Day Schedule Name
    ,                        !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub) {dimensionless}
    ,                        !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud) {dimensionless}
    1.0;                     !- Sky Clearness

into this:

! HK Cooling Design Conditions
SizingPeriod:DesignDay,
    HONG KONG Ann Clg .4% Condns WB=>MDB,  !- Name
    7,                       !- Month
    21,                      !- Day of Month
    SummerDesignDay,         !- Day Type
    30.8,                    !- Maximum Dry-Bulb Temperature {C}
    4.7,                     !- Daily Dry-Bulb Temperature Range {deltaC}
    ,                        !- Dry-Bulb Temperature Range Modifier Type
    ,                        !- Dry-Bulb Temperature Range Modifier Day Schedule Name
    Wetbulb,                 !- Humidity Condition Type
    27.5,                    !- Wetbulb or DewPoint at Maximum Dry-Bulb {C}
    ,                        !- Humidity Condition Day Schedule Name
    ,                        !- Humidity Ratio at Maximum Dry-Bulb {kgWater/kgDryAir}
    ,                        !- Enthalpy at Maximum Dry-Bulb {J/kg}
    ,                        !- Daily Wet-Bulb Temperature Range {deltaC}
    100547,                  !- Barometric Pressure {Pa}
    5,                       !- Wind Speed {m/s}
    240,                     !- Wind Direction {deg}
    No,                      !- Rain Indicator
    No,                      !- Snow Indicator
    No,                      !- Daylight Saving Time Indicator
    ASHRAEClearSky,          !- Solar Model Indicator
    ,                        !- Beam Solar Day Schedule Name
    ,                        !- Diffuse Solar Day Schedule Name
    ,                        !- ASHRAE Clear Sky Optical Depth for Beam Irradiance (taub) {dimensionless}
    ,                        !- ASHRAE Clear Sky Optical Depth for Diffuse Irradiance (taud) {dimensionless}
    1.0;                     !- Sky Clearness