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Severe Error: Temperature out of Bounds (Low)

asked 2015-08-21 14:20:33 -0600

mgleason05 gravatar image

updated 2015-08-24 11:08:06 -0600

I have a zone on the roof of a building that is well insulated, maintaining a temperature of 350 deg F. For some reason, I am getting the following error message:

* Severe * Temperature (low) out of bounds [-128.21] for zone="PC1_OVEN", for surface="PC1OVEN:PC1OVEN_WALL_3_0_0"

There are no cooling loads in this zone, and the natural weather is not anywhere near cold enough to cause anything to be -128.21 degrees. Any suggestions on where this error might come from?

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Hello @mgleason05. Welcome to UnmetHours. To help route the question to the right people, please tag with the software you are using.

__AmirRoth__ gravatar image__AmirRoth__ ( 2015-08-21 17:05:31 -0600 )edit

My apologies! I am currently using EnergyPlus v8.3

mgleason05 gravatar imagemgleason05 ( 2015-08-24 07:09:31 -0600 )edit

I had this problem, and I solved it by correcting the big amount of receptacle load assigned to the space containing the surface.

Angelibus gravatar imageAngelibus ( 2016-11-29 09:19:19 -0600 )edit

Hi, there. I just have the same problem when I using the grasshopper_honeybee tool interface, the result of surfaces shows high out of bounds or low out of bounds .I can tell from your solve way , but seems that I couldn't find the counterpart setting in HB tool , Does anyone know how to figure it out? Thanks in advance!

borui gravatar imageborui ( 2018-01-09 20:24:14 -0600 )edit

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answered 2015-08-24 10:35:16 -0600

Hi, when I get an error like this in EnergyPlus it usually has very little to do with that surface or that zone. Usually it is a problem elsewhere. I would check the errors you have above and correct as many of those as possible. Also make sure your air flow rates add up and are reasonable. Check your sizing objects, especially zone and system sizing. Finally check the sizes and efficiency you have put on your equipment that sometimes also causes this error.

The last time I got this error (last week) it was because I had incorrectly sizes my chilled ceilings water flow rate. The time before (the week before) my air flow rates where not adding up in my AHU objects. I have been modelling with EnergyPlus for ages too!

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Asked: 2015-08-21 14:20:33 -0600

Seen: 405 times

Last updated: Aug 24 '15