<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:18pt"><div>Dear users,</div><div>As i say in my last message, i try to supervise ON/OFF of my heat pump type 927 for production of heat water to store in my tank type 4a.</div><div>I want to write équations which control pump On when temperature of tank is lower 65 and OFF when it's upper 65°C</div><div>And after i must prcise the time of function which is 2 hours to morning - 2 hours to afternoon et 2 hours to night.</div><div> </div><div>Thanks for your help!</div><div> </div><div>Alain!</div><div> </div></div></body></html>