[EnergyPlus_Support] question about air-air heat recovery with economizer

[Chaoqin Zhai <chaoqinz@xxxxxxxxxxxxxx>]

Hi,

I have an air-air total heat recovery in the system. In addition, I set the 
system could go into economizer mode when the outdoor condition is within a 
certain limit. When I ran the simulation using EnergyPlus, an error message 
is generated, which said: HEAT EXCHANGER:AIR TO AIR:GENERIC "ERV" average 
air volume flow rate is <50% or >130% of the nominal HX supply air volume 
flow rate.

To my understanding it is because the outside air flow rate is getting 
higher than the minimum outside air flow rate, which is the same as nominal 
air flow rate of the ERV, when the system is in economizer mode. Am I 
right? Will this warning affect the calculation accuracy of the simulation?

Thanks a lot!


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