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<p>Hello there</p>
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<p>I am trying to calculate the following equation:</p>
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<p><span>Eff_energy = (P_net+Q_heating+Q_DHW+Q_cooling)/(Max(0.000001,m_H2)*LHV)</span><br>
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<p>I made a link between P_load (which is being calculated in different equation) and P_net, but I am still getting this problem:</p>
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<div>TRNSYS Message 20 : The referenced variable used in this equation has not been defined in the TRNSYS input file. The equation begins with the string in "reported information"</div>
<div>Reported information : EFF_ENERGY = (P_LOAD</div>
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<div>Could you please help?</div>
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<div>Thanks.</div>
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