6)Select filter replacement run time – The thermostat will display FLTR after a set time of operation. This is a remind- er to change or clean your air filter. This time can be set from 0 to 1950 hours in 50 hour increments. A selection of 000 will cancel this feature. When “FLTR” is displayed, you can clear it by pressing SYSTEM. This resets the timer and starts counting the hours until the next filter change. Contact your system manufacturer for a specific replacement/main tenance interval.
7)Select Temperature Display Adjustment 4 LO to 4 HI – Allows you to adjust the room temperature display up to 4° higher or lower. Your thermostat was accurately calibrated at the factory but you have the option to change the display temperature to match your previous thermostat. The cur- rent or adjusted room temperature will be displayed on the left side of the display.
8)Select F° or C° Readout – Changes the display readout to Centigrade or Fahrenheit as required.
9)Selected Auto mode – This control will feature AUTO changeover mode when AU on is selected (default). Press
the 
or 
keys (not available on earlier models) to defeat the auto changeover mode (OFF).
10)Limited Heat Range – This feature provides a maximum setpoint temperature for heat. The default setting is 90°F. It can be changed between 62°F and 89°F by pressing the 
or 
key.
11)Limited Cool Range – This feature provides a minimum setpoint temperature for cool. The default setting is 45°F. It can be changed between 46°F and 82°F by pressing the
or 
key.
12)This Feature Not Available.
CONFIGURATION MENU
13 & 14) Keypad Lockout – This menu selection will display lock icon (
) and “OFF” (default, keypad not locked out). The 
and 
are used to toggle the selection between OFF and ON (keypad locked out). When the keypad lockout selection is enabled (ON), and the SYSTEM button is pressed again, the display will indicate the number “0” (default, still disabled) in the time digits. The 
and 
are used to set the combination number from 0 to 999. If a combination of 0 is selected and the SYSTEM button is pressed, the menu will be exited and keypad will not be locked. If 1 to 999 is selected and the SYSTEM button is pressed, the combination is stored into memory and the menu is exited. The (
) will display designating keypad locked with a valid combination. The SYSTEM button will operate for 10 seconds after the menu mode is exited to allow the user to change the mode from OFF to the desired SYSTEM mode.
While the keypad is locked out, a simultaneous press of 
and 
will enter the configuration menu from any mode instead of only OFF mode. When the menu is entered with the keypad lockout feature enabled, the first menu item displayed is the combination code 0. The 
or 
keys are used to set the combination unlock number from 0 to 999. If the unlock number matches exactly with the combination lock number stored in memory when the SYSTEM button is pressed, the keypad is unlocked and the (
) is removed. If the unlock number does not match when the SYSTEM button is pressed, the menu is exited and the keypad remains disabled.
To reset the combination code and unlock the keypad if the code is forgotten, see troubleshooting section.
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC 50/60 Hz or DC
0.05 to 1.5 Amps (Load per terminal)
2.5 Amps Maximum Total Load (All terminals combined)
SPECIFICATIONS
THERMAL DATA
Setpoint Temperature Range:
45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH
Shipping Temperature Range:
7
