40
to move the box from the 99 to the 10 (programmable model) or to flash the 10
(non--programmable model). 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 be performed. When the value reaches zero, the
heat setpoint shall display ----. The cool setpoint shall display -- and the room air
temperature shall display Fd. When the factory defaults have been restored, the
Thermidistat Control will act as if power was cycled and return to normal
operation. If the DOWN key is released early, the number will return to 10 and
the reset will not occur.
SYSTEM START--UP AND CHECKOUT
The Thermidistat Control is designed with a built--in installer test capability. It
allows easy operation of equipment without delays or setpoint adjustments to
force heating or cooling. To enable installer test mode, press and hold the fan
button for 15 seconds. After 10 seconds, the Thermidistat Control will enter
Configuration Mode. Continuing to hold the Fan button through 15 seconds will
cause the Thermidistat Control to enter Installer Test Mode. Pressing the Mode
button will change the system operating mode to test the heating and cooling
equipment. Auto Mode is not available during Installer Test Mode. If no buttons
are pressed for 15 minutes, the installer test mode will be terminated. Pressing
DONE at any time will exit installer test mode.
Heat -- The first stage of heating will be energized for three minutes, then the first
and second stages (if a second stage exists) will turn on for an additional three
minutes. During the first stage of heating, the HEAT ON icons will be displayed.
During the second stage of heating (if one exists), the “2” next to the “On” will
be displayed if the system has a two--stage compressor (A2, h2, or H2 unit
types). The “auxiliary heat on” icon will be displayed if the second stage is
electric heat (HP unit type). For Hybrid Heat installation or heat pump
