Re: [EnergyPlus_Support] Warning

[HSIEH Chun-Ming <chunming@xxxxxxxxxxxxxxxxxxx>]

Hi, 

If this warning message occurs only once or twice, we can ignore that.
Then, how about the following two examples, are their simualtion results
still correct?
If not, how to slove them?

1. In a 7-floor building, each floor has a window air conditioner. 
And there are 14 warning showed here, 2-3 warning messages for each window
air conditioner in each floor.
** Warning ** AIR CONDITIONER:WINDOW:CYCLING -- Exceeded max iterations while
adjusting compressor runtime to meet the zone load within the cooling convergence
tolerance.
   **   ~~~   ** For WindowAC=ZN002WINDAC, Iterations=50

2. For the case of a 12-floor building with a central system (water-cooled
type):
The message showed 15 times, 
and most of the messages occurs at the time at 8:01 where the air conditioner
turn on at 8 o'clock.
  ** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops,
TAIPEI TWN IWEC DATA WMO#=466960, 08/22 08:01
   ** Warning ** SimHVAC: Exceeding max iterations continues...   50

Thank you very much.

Chunming


Michael J. Witte wrote:
>  This
> means that something in the HVAC simulation is not converging 
>  within the allowed number of iterations.  If this occurs only once or 
>  twice, it could be a morning startup issue and can probably be 
>  ignored.  If it occurs many times, it indicates a problem with your 
>  system description.
>   
>  Mike
>   
>   
>  On 4 Dec 2002, at 17:19, Cristina Castaño/LABEIN wrote:
>   
>  > Hi,
>  > 
>  > What is the meaning of the following error?, What is wrong?:
>  > 
>  > ** Warning ** SimHVAC: Maximum iterations exceeded for all HVAC loops,
>  > SANTANDER ESP IWEC DATA WMO#=080230, 01/01 01:15
>  > 
>  > 
>  > Best regards,
>  > Cristina
>  > 
>  > 
>  > 
>  > 
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