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I have a model of a home I'm playing with, has been working fine, slowly adding others things, such as lights, and people schedules, tweaks, like roof overhangs that shade the building and windows. I can't figure out what I did or changed, but now I'm getting the following error.

* Warning * Zone areasinside surface emissivities are summing to zero, for Zone="LIVING THERMAL ZONE" * ~~~ ** As a result, MAT will be used for MRT when calculating a surface weighted MRT for this zone.

I have a basement zone that doesn't give this error, and two unconditioned attic zones, and an attached garage zone. The Living zone has about 5-6 spaces in it.

I can't find any information on this, and not sure where to start to look for issues.

Thanks in advance.

I have a model of a home I'm playing with, has been working fine, slowly adding others things, such as lights, and people schedules, tweaks, like roof overhangs that shade the building and windows. I can't figure out what I did or changed, but now I'm getting the following error.

* Warning * Zone areasinside surface emissivities are summing to zero, for Zone="LIVING THERMAL ZONE" * ~~~ ** As a result, MAT will be used for MRT when calculating a surface weighted MRT for this zone.

I have a basement zone that doesn't give this error, and two unconditioned attic zones, and an attached garage zone. The Living zone has about 5-6 spaces in it.

I can't find any information on this, and not sure where to start to look for issues.

Thanks in advance.