Heat Pump Operation and Control
I have several questions related to heat pump operation and control via thermostat, which the manufacturers have done an outstanding job of not explaining.
First, my variable speed super efficient minisplit air handler says that I should wire my thermostat as a conventional single stage heating and cooling (1H/1C). Does anyone know how this makes sense? Yes the air handler has a return air temp sensor, but that doesn’t help if it doesn’t know the set temp, and I’m assuming the thermostat just sends a discrete on/off command, not the actual temp it’s set to.
Second, the “Dry” mode feature of their ductless minisplits has almost no information associated with any manufacturer. I’m specifically dealing with a Carrier system (40MBAAQ24XA3) but I’m finding it across the board. I can’t figure out if this is a feature you have to program semi-permanently or if it can be controlled by a Humidistat, and if so HOW. Assuming I have a humidistat capable thermostat, does anyone know how is the control communicated to the air handler? Is this as a 2nd stage cooling mode, aux mode?
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