Question-and-Answer Resource for the Building Energy Modeling Community
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This is the line in the code that seems to be causing the error:
It looks like a there isn't an unmet heating hours value in the output SQL file for one of your zones.
Make sure all of your zones have heating thermostat setpoints. If you define a thermostat for a zone, it needs to have both a heating and cooling setpoint, even if it doesn't have either heating or cooling.
