Installation Manual
26
On – Three stages of electric heat will be staged.
This switch should be set to On if the HVAC equipment has two banks of strip heaters. When
electric heat is required, the thermostat will energize the smallest bank first (W1 only), then the
larger bank (turning the smaller bank off -- Y1/W2 only), and then both banks together (both W1
and Y1/W2). When power is cycled to the thermostat, this unit configuration will be displayed as
HS.
Factory defaults is OFF
SW44 —Super Comfort Heat
This option is only available on heat pump units HP (HP, H2, hh, and h2) when SW41 (Variable
Speed Blower) is set to On and the system has a valid outdoor air temperature sensor or Wi-Fi
connection with weather setup
OFF – Comfort Heat is off
On – Comfort Heat feature is on.
If the outdoor air temperature is between 12 to 40F (-11 to 4C) and the compressor is running
in heating, then the fan output is turned off. This will signal the variable speed blower to reduce
the air speed. The fan output is turned off even if the user has the fan selection set to continuous
fan. The fan output will be turned back on in this temperature range if the maximum capacity of
auxiliary heat is on due to system demand (auxiliary heat on in response to a defrost signal
shouldn’t cause the fan to turn back on).
If the outdoor air temperature is below 12F/-11C and there is sufficient demand for the
equipment to be on, then the fan output is turned back on and the W/W1 output is energized. In a
two speed unit the Y/Y2 output should be energized in addition to the W/W1 output. This logic
does not apply to a Hybrid Heat system. In the unlikely event that the installer has selected a heat
pump lockout temperature (SW09) of 5F/-15C in a Hybrid Heat system and the comfort heat
feature is on, then the comfort heat feature will turn the W/W1 on and the compressors off when
the outdoor air temperature drops below 12F/-11C instead of at the lower temperature of 5F/-
15C.
NOTE: All temperature boundaries have a +/- 2 hysteresis
Factory default is OFF
SW99 —Reset to Factory Defaults
Use this capability to reset the Thermostat to “out of the box” conditions. BEWARE! All
configuration settings, program settings, clock, and calendar which have been manually entered
will be lost! When this option is selected, the configuration number (SW99), will appear on the
left and 10 will appear on the right. To perform the reset, first use the NEXT key to move the
box from the SW99 to the 10. Then press and hold the DOWN key. The 10 will start counting
down toward zero. If the DOWN key is kept pressed until the count reaches zero, the reset will