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Winter humidity levels are too low
1. If you have installed a dehumidistat ensure that its setting
is correct. (Summer - OFF) (Winter - 30% RH to 45%
RH).
2. Check humidifier settings. (Summer - OFF) (Winter -
30% RH to 45% RH).
NOTE: Humidifier should always be 10% lower than
dehumidistat.
3. Change thermostat fan switch from manual to automatic.
Summer humidity levels are too high
1. If you have installed a dehumidistat ensure its setting is
correct. (Summer - OFF)(Winter - 30% RH to 45% RH).
2. Change thermostat fan switch from automatic to manual.
NOTE: The CAF has the ability to dehumidify during the
heating season. (When outside air is less humid than
indoor air). If you are in a region where outdoor humidity
levels are typically higher than indoor humidity levels, a
dehumidistat should not be used in this system.
Troubleshooting
Winter Setting
30% to 45%
Summer Setting
“OFF”
Optional Dehumidistat
This control will reduce winter humidity levels when outdoor
air approaches or exceeds freezing.