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Adjusting the fans of your HVAC system
The fan control under advanced settings allows you to either control
the HVAC fan using the thermostat control logic or use the control
logic of the HVAC. It also allows you to either run the fan in Auto Mode
or On Mode
Wyze Thermostat has 3 fan control modes as shown below:
● Auto: The fan will only run with the cooling stage. (It is always
necessary for any system to run the fan with the cooling
system).
● Cycle: Configurable in Settings > Advanced > Fan Cycle.
Cycle is configurable from 0 min/hr to 55min/hr. Note: This is
the minimum amount of time the fan will run each hour. This
means the time the system is in the cooling stage and running
the fan is counted towards the fan cycle time.
● On: The fan will run continuously.
Fan Control
Under the fan control, you can choose On (the fan runs continuously)
or Auto in which case the fan will run according to the fan cycle time
selected in Settings > Advanced > Fan Cycle. The default 0 min/hr
fan cycle time means that the fan will turn off immediately after the
heat is turned off. Any of the other fan cycle times mean that the fan
will run for that duration within every hour.
Fan Activation Delay:
This setting allows you to determine when your furnace blower fan
should turn on during heating. Users can either select By Furnace,
15s, 30s, 45s or 60s. If you select By Furnace, the furnace fan will
be controlled according to the furnace control logic during heating.
However, if you select any of the times listed, the thermostat will turn
on the furnace fan at the set time during heating. This means that if
you select 15s, the fan will turn on after 15 seconds of heating.
To set this, go to Settings > Advanced > select fan activation delay
and choose your desired setting.
Note: The default setting for fan activation delay is By Furnace. For
conventional units, Wyze Thermostat is automatically configured to
have a 15 second Fan delay. This means that, when the furnace is
15
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