[TRNSYS-users] Air-Water Heat Pump (Type 941) doesn't converge

Adrian Riebel Brummer adrianriebel at gmail.com
Sun Jul 5 17:36:09 PDT 2020


Dear TRNSYS users,

I have a problem with Type 941 (Air-Water Heat Pump). My problem is that
the simulation doesn't converge when the waterflow in the heat pump is
zero, despite the heat pump is also in off mode (heating and cooling
control signals are both set to zero).

I have read the mathematical reference of this Type and it says something
about a "Fan control signal", which functions, as I understand, as the
master on-off switch of the heat pump. The problem is that I can't find
that Input in the TRNSYS programm.

I would like to know why I can't find that Input, and why the model doesn't
converge despite the heat pump shouldn't be doing anything.

I send you a picture of all the inputs that I can see for this Type. I have
TRNSYS18 and TessLibs17.

Regards,

Adrian Riebel

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