36
• After the completion of pre-purge, the control will
energize the igniter.
• After completion of the ignitor warm-up period:
• The gas valve is energized.
• The ignitor is de-energized as soon as ame is
sensed.
• After 30 seconds the indoor blower is energized on
heating speed.
• When the thermostat is satised:
• The gas valve is de-energized.
• The inducer remains energized for the post purge
period (15 seconds).
• The indoor blower runs for the selected o delay
period (90 seconds by default, adjustable from 30 –
180 seconds).
To change the main blower speed in HEATING mode,
follow the following steps:
1. Press left or right button till LED displays “gA1 “(for
single stage HEATING). Press center button and
LED will display the selected speed number as Fxx
(xx: Blower speed number).
2. The control shall rotate available speed number
every time Left/Right switches are pressed. Table
below shows the available speeds for Low & High
heat mode.
3. When the center switch is pressed, the current
displayed speed shall be selected, and control shall
apply the newly selected speed in next heating call.
NOTE: Always refer to the Heating Chart to choose from
available heating speeds
THERMOSTAT CALL AVAILABLE SPEEDS
W/W1
F01
F03
F04
F02 (DEFAULT)
To change the main blower speed in circulation mode,
follow the following steps:
1. Press the left or right switch until LED displays
“FSd”. Press the center switch and LED will display
the selected speed number as Fxx (xx: Blower
speed number from 1 to 9). F01 is the default speed
for circulation.
2. The control will rotate available speed number every
time left/right switches are pressed. All 9 speeds are
available for circulation.
3. When the center switch is pressed, the current
displayed speed will be selected, and control will
immediately 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
thermostat 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.
• After the thermostat is satised, the compressor is
de-energized and the Cool Mode Fan O Delay period
begins.
• Following the Cool Mode Fan O Delay period, the
cool circulator and air cleaner relay are de-energized.
On a call for 2nd stage cooling, the Y2 or Y2 and G
thermostat 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.
• After the thermostat is satised, the compressor is de-
energized and the Cool Mode Fan O Delay period
begins.
• Following the Cool Mode Fan O Delay period, the
cool circulator and air cleaner relay are de-energized
To change the main blower speed in COOLING mode,
follow the following steps:
1. Press the left or right switch until LED displays “AC1
“(for single stage COOLING) or “AC2 “(for two-
stage COOLING). Press the center switch and LED
will display the selected speed number as Fxx (xx:
Blower 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.
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