SYSTEM OPERATION
9
3. When the center switch is pressed, the current dis-
played speed will be selected, and control will imme-
diately apply that speed setting.
THERMOSTAT
CALL
AVAILABLE
SPEEDS
G
F01
F02
F03
(DEFAULT)
F04
F05
F06
F07
F08
F09
On a call for low stage cooling, the Y/Y1 or Y/Y1 and G ther-
mostat contacts close signaling the furnace control board
with 24 VAC on Y/Y1 or Y/Y1 and G terminals.
• The 7-Segment will display the cool mode:1 A C
• The compressor and condenser fan are energized.
• The circulator fan is energized at low cool speed after
a cool on delay. The electronic air cleaner will also be
energized.
•
begins.
•
circulator and air cleaner relay are de-energized.
On a call for 2nd stage cooling, the Y2 or Y2 and G thermo-
stat contacts close signaling the furnace control board with
24 VAC on Y2 or Y2 and G terminals.
• The 7-Segment will display the cool mode: 2 A C
• The compressor and condenser fan are energized.
• The circulator fan is energized at cool speed after a
cool on delay. The electronic air cleaner will also be
energized.
•
begins.
•
circulator and air cleaner relay are de-energized
To change the main blower speed in COOLING mode, fol-
low the following steps:
1.
COOLING). Press the center switch and LED will dis-
speed number from 1 to 9).
2. The control will rotate available speed number every
time left/right switches are pressed. All 9 speeds are
available for both Single and Two Stage cooling.
3. When the center switch is pressed, the current dis-
played speed will be selected, and control will apply
THERMOSTATCALL AVAILABLESPEEDS
Y/Y1
F01
F02
F03
F04(DEFAULT)
F05
F06
F07
F08
F09
THERMOSTATCALL AVAILABLESPEEDS
Y2
F01
F02
F03
F04
F05(DEFAULT)
F06
F07
F08
F09
1. Set the thermostat to the lowest setting. The inte-
2. Remove the burner compartment door and move the
furnace gas valve manual control to the OFF position.
3.
furnace.
4. Replace the burner compartment door.
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