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compensate for current. There is also no droop with this thermo-
stat, regardless of anticipator setting. This adjustment controls only
sensitivity and cycle rate up to the maximum of 4 cycles per hr.
TO ADJUST:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 01. This selects Option 1.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 1 setting.
4. Use up and down buttons to move between the available
Option 1 values of 01 to 09. Factory default is 03.
5. Press MODE button again to return to Option 1 indication of
01. The SET icon will now be off.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 2—CLEAN FILTER TIMER
This option selects the number of hours of blower operation
(heating, cooling, or fan) before FILTER icon is displayed. With
OF selected, the icon will never come on, disabling this feature.
Time selection can be from 400 to 3600 hours by selecting
numbers 01 through 09. (Time is 400 X number selected.) Factory
default is 2 (800 hours). Recommended selections are: disposable
filter 800 hr, media filter 1200 to 1600 hr, or electronic air cleaner
1600 to 2400 hr of blower operation.
TO ADJUST:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 02. This selects Option 2.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 2 setting.
4. Use up and down buttons to move between the available
Option 2 values of OF and 01 through 09. Factory default is
02.
5. Press MODE button again to return to Option 2 indication of
02. The SET icon will now be off.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 3—FAHRENHEIT/CELSIUS SELECTION
This option selects Fahrenheit or Celsius operation.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 03. This selects Option 3.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 3 setting.
4. Use up and down buttons to move between the available
Option 3 choices of F (Fahrenheit) or C (Celsius). Factory
default is F.
5. Press MODE button again to return to Option 3 indication of
03. The SET icon will now be off.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 4—G (FAN) ON WITH ANY W (HEAT)
This selection determines whether the G (fan) output is to be ON
or OFF when any W (furnace or strip heat) output is ON. Most
furnaces and fan coils manage their own blowers and do not
require a separate G signal. For these applications, select OFF.
Some auxiliary heaters require a separate G signal to turn on the
blower. In this case, select ON. Factory default is OFF.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 04. This selects Option 4.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 4 setting.
4. Use up and down buttons to move between available Option 4
choices of ON or OF. Factory default is OF.
5. Press MODE button again to return to Option 4 indication of
04. The SET icon will now be off.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 7—ZONING ON/OFF SELECTION
This selection enables or defeats the 15 minute cycle timer, the 15
minute staging timer, and the 5 minute compressor timeguard. (See
"Operational Information" on page 11 for details.) These timers
MUST be enabled (zoning OFF) for normal operation and disabled
(zoning ON) for zoning applications. In zoning applications, the
zone control center performs these timing functions. Factory
default is OF.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 07. This selects Option 4.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 7 setting.
4. Use up and down buttons to move between available Option 7
choices of ON or OF.
5. Press MODE button again to return to Option 7 indication of
07. The SET icon will now be off.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 8—HIGH AMBIENT AUXILIARY HEAT LOCKOUT
Present in HP and 2S models only when configured as a heat
pump. Outdoor temperature sensor must be attached. This selec-
tion allows lockout of any electric heat (W output) when outdoor
temperature is above a selected temperature. Temperatures of 5° to
55°F (or equivalent values in C) can be selected. Feature can be
disabled by selecting OFF. Emergency heat (EHEAT mode)
always overrides this feature.
TO SELECT or ADJUST:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 08. This selects Option 8.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 8 setting.
4. Use up and down buttons to move between available Option 8
choices of OF, or 5 through 55 in 5° steps.
5. Press MODE button again to return to Option 8 indication of
08. The SET icon will now be off.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 13—ROOM TEMPERATURE OFFSET
This option allows calibration (or deliberate miscalibration) of
room temperature sensor. There are various reasons why the
homeowner may want to have displayed temperature adjusted to a
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