18
Step 4 — Check ThermostatOperation
The Legacy Series thermostats hav e a built--in installer test capability. Use it to
check thermostat and equipment operationwithout delays or setpoint adjustments
to force heating or cooling.
To enterthe Installer Test mode, use the same process as is used to enterInstaller
Configuration,only hold the FAN key longer.More specifically, press and hold the
FANfor about 15 seconds until the display reads In on the leftand St on the right
for the programmable model, or InS in the smaller display for the
non--programmablemodel. The MODE will be OFF.The MODE key (upper left)
can now be used to selectheat, cool, or emergency heat, if this is aHP thermostat.
Selectingone of the availablemodes will immediately command the equipment to
turnon in that mode. It will run for 3 minutesand then return the mode to off. With
HPthermostats (having 2 stages of heating), the test willrun for 3 minutes on each
stage. If thethermostat is programmable, the clock displaycounts down from 180
seconds while each stageoperates. Changing the mode to OFF will terminate any
runningtest immediately.
During any test, the display icons will be displayed the same as for normal
operation of that stage, a s follows:
SELECTEDMO DE DISPLAYICONS
off off
cool coolon
heat heaton, aux heat on
EmHeat auxheat on
To terminate the Installer Test mode press the DONE or FAN button. If the
thermostat is left in Installer Test mode , it will revert back to normal op eration after
15 minutes.