Hello All,
Operating a PVA-A36AA7 indoor unit with a PAC-US444 thermostat interface with a Honeywell prestige IAQ setup. When there is no call for heating or cooling, and fan-only is on, the unit defaults to the high-speed fan. I have not found a successful way to lower the fan speed for ventilation mode with the thermostat interface. Is this just a limitation of the thermostat interface? Any method to lower the fan speed in ventilation mode? Overall, everything is working well, and dehumidifying and ventilation tied to IAQ. Y1/2 and W1/2 is wired Pac unit, and SW2-6 is set to the ON position.
Thank you,
Mike
Operating a PVA-A36AA7 indoor unit with a PAC-US444 thermostat interface with a Honeywell prestige IAQ setup. When there is no call for heating or cooling, and fan-only is on, the unit defaults to the high-speed fan. I have not found a successful way to lower the fan speed for ventilation mode with the thermostat interface. Is this just a limitation of the thermostat interface? Any method to lower the fan speed in ventilation mode? Overall, everything is working well, and dehumidifying and ventilation tied to IAQ. Y1/2 and W1/2 is wired Pac unit, and SW2-6 is set to the ON position.
Thank you,
Mike
source https://hvac-talk.com/vbb/threads/2242161-Mitsubishi-PAC-US444-and-ventilation-fan-speeds?goto=newpost
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