Grant R290 Pump Oscillation

[glyn.hudson]

@MrW

@glyn.hudson on an unrelated note, I see on your emoncms graph your target temperature moves in nice smooth .1 increments, mine only moves in integers, if I look at sensor.heat_pump_target_temperature I can see this only ever moves in whole numbers - I notice yours used to do this, I presumed it was a limitation of the heat pump to be honest but perhaps not! What did you change?

I think this is to do with when I switched to using Econext: Direct local control of Grant HP290 Econet replacement (Plum ecoMAX360i) to read data from the HP