White Rodgers HC-TST501CMMS manual System Operation, Auxiliary Heating, Heat Pump Disable

Advanced Installer Configuration Menu

Each Equipment User Menu has submenus to divide the information into categories. Each equipment has a different set of submenus, with different parameters depending on the equipment. The submenus are showing similar information for each equipment. The submenus and the information they provide are:

•	Status	Used to display or modify equipment
		settings
•	2 Week History	Displays information on the number of
	(2 WK HIST)	hours of unit/mode operation and the
		number of cycles the unit has operated
		in for the last two weeks.
•	Life History	Displays information on the lifetime
	(LIFE HIST)	number of hours of unit/mode
		operation and the number of cycles the
		unit has operated in.
•	Fault History	Displays information on the last six
	(FAULT HIST)	faults by code and description that
		occurred throughout the system and
		the number of days ago that the fault
		occurred.
•	Unit Info	On new system installations displays
		the model number and serial number
		of the selected unit.
		If a control has been replaced the
		equipment will be recognized but will
		only show the unit model number.
•	Setup	Used to display or modify equipment
		settings
•	Dipswitches	Displays current setting of dipswitches
		on equipment.

“X” in the following tables indicate alpha or numeric character.

Using the Thermostat

System Operation

Touch the SYSTEM key to select the thermostat operating mode desired. When the system is calling for first stage heat or cool, “Low” will display on the touchscreen. When second stage is required, the display will show “High”. The setpoint temperature can be changed by touching theorkeys.

Auxiliary Heating

Heat Pump Disable

This feature is applicable only in the heat pump mode. When this feature is selected, the thermostat will switch to electric heat and shut off the compressor when the outside temperature falls below the HP balance point. In the Thermostat User Menu, use or to select the temperature which can be between 5 to 50°F.

Dual Fuel Disable

This feature is applicable only in the heat pump mode. When this feature is selected, the thermostat will switch to fossil fuel heat and shut off the compressor when the outside temperature falls below the DF balance point. In the Thermostat User Menu, use or to select the temperature which can be between 5 to 50°F.

Air Handler Lockout Temperature

This feature is applicable only in heat pump mode with electric auxiliary heat. When the outdoor temperature is above the Air Handler Lockout Temperature balance point, the auxiliary heat stage(s) will be inhibited so the thermostat setpoint will be maintained by only the heat pump. Factory default is OFF which disables the feature. The Lockout Setpoint cannot be set at or below the Heat Pump Disable (HP) balance point. In the Thermostat User Menu, use or to select the temperature which can be between the Heat Pump Disable setting value (HP) to 95°F.