Question-and-Answer Resource for the Building Energy Modeling Community
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I don't know which output variables your are looking at. The inlet temperature and the outlet temperature match when the heat pump is not operating.
I picked up just the first one week of your simulation result.
My markups (red circles) show that the inlet temperature (the grey line) and the outlet temperature (the black line) match when the heat pump is not operating (when both the sky blue line and the orange line are zero).
The simulation result is here.
