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To set the Residual Cooling Fan Delay:
1. Press the Up and Down buttons at the same time again and hold them for three seconds. The LCD
Display will show “cool”, “set”, and the current Residual Cooling Fan Delay time in seconds (0, 30, 60, or
90).
2. Press the Up button to increase the Residual Cooling Fan Delay time. Press the Down button to decrease
the Residual Cooling Fan Delay time.
To set the Refresh Cycle Time:
1. Press the Up and Down buttons at the same time again and hold them for three seconds. The LCD
Display will show “fan”, “set”, and the current Refresh Cycle Time in minutes (10, 15, 20, or 30).
2. Press the Up button to increase the Refresh Cycle Time. Press the Down button to decrease the Refresh
Cycle Time.
Filter Reminder
The LCD Display will show “lter” after every 400 hours of fan operation, as a reminder to change the
HVAC system’s lter as soon as possible.
Resetting Your Thermostat
Should the thermostat’s previous settings be desired, use the tip of
a paper clip to press the “reset” button.
NOTE: Pressing the Reset button reverts the thermostat to its
previous settings, NOT the factory settings.
TROUBLESHOOTING
Problem
Solution
Scrambled or double
display (numbers over
numbers)
1. Remove the clear Mylar decal form the LCD Display.
1. Check wiring connections. A Common (C) wire is required for operation.
2. Press and hold the Reset button for two seconds with the tip of a paper
clip.
LCD Display is blank
Auto/Fan does not turn on 1. Move the #1 System Set-Up Switch (HG/HE) to the opposite position.
Fan runs continuously
1. Check the Fan Switch. The fan will run continuously if the Fan switch is in
the “on” position.
Erratic display 1. Press and hold the Reset button for two seconds with the tip of a paper
clip. The thermostat will need to be re-programmed.
Heating or cooling does
not go on or off
1. Ensure the System Switch is in the desired position (“heat”, “cool”, “em
heat”).
2. There may be as much as a 4 minute Compressor protection delay before
the Heat or Cool system turns on - wait and check.
3. Check your circuit breakers and switches to ensure there is power to the
system.
4. Make sure your furnace blower door is closed properly.
reset