Carrier ComfortVu TB-24-HM - Selecting System Mode; Selecting Fan Speeds (for 2 and 3 Fan Speeds Configuration); Turning Auto Fan on or off (Fan on Demand); Locking the Thermostat Buttons

Operating instructions (cont.)
In 1-speed configuration:
Press the [Fan] button to turn Auto fan ON or OFF.
In 2- and 3-speed configurations:
Press and hold the [Fan] button for 7 seconds to turn Auto fan ON or OFF.
When ON, the fan will run on demand for cooling or heating,
When OFF, the fan will run continuously.
Note: Auto fan cannot be selected in Fan only mode.
Turning Auto fan ON or OFF (fan on demand)
Auto fan
OFF
Auto fan
ON
Press the [Fan] button to switch between fan speeds.
Notes:
 In Auto speed, the active fan speed icon will appear on display.
 Medium speed available in 3 speeds configuration.
Selecting Fan speeds (for 2 and 3 fan speeds configuration)
Low Medium
High Auto
Press the [Mode] button to switch between system modes.
Notes:
 During demand for cooling or heating, the active mode will flash.
 In Auto mode, the active mode icon (Cool or Heat) will appear on display.
 Auto mode is not available in 2-Pipe system configuration.
Selecting system mode
Cool Heat
Auto Fan only
Locking the thermostat buttons
Press and hold both [-] and [Fan] buttons for 7 seconds to lock or unlock the thermostat buttons.
When locked, the lock icon will appear on display with any attempt to press the buttons.
Enable or disable the option to lock different buttons using Technician Settings P4-P7.
Lock
indications
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