Re: [TRNSYS-users] problem with control signal of type 668

To: Eva gklezakou <gklezakoue@gmail.com>

Subject: Re: [TRNSYS-users] problem with control signal of type 668

From: David BRADLEY <d.bradley@tess-inc.com>

Date: Tue, 21 Aug 2012 14:16:08 -0500

Cc: trnsys-users <TRNSYS-users@cae.wisc.edu>

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Eva,
Quite a long time ago, there was a bug in Type668 that caused there to be a power output even when the device was off. However, this was fixed in 2005. You should contact your distributor and make sure that you have a more recent version. Also, Type668 has two control signals; one for heating and one for cooling. Make sure that both are switched to OFF.
Best,
David

On 8/21/2012 10:56, Eva gklezakou wrote:

Dear Sirs,

I think that something going wrong with the control signal of the type 668 because even though the signal from the controller is 0 and for this reason both COP (output of type 668) of the heat pump and the heat transfer to load (output of type 668) are 0 the heat pump power is not 0.

Thank you for your help.

Regards,

Eva
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