Goodman ACS series Service Instructions Manual page 84

SYSTEM OPERATION
C F
ONSTANT AN
• R and G thermostat contacts close, initiating a call
for fan.
• Integrated control module performs safety circuit
checks.
• Circulator blower is energized on continuous fan speed
(56% of high stage cooling) following a five (5) second
delay. Electronic air cleaner terminals are energized.
• Circulator blower runs, integrated control module moni-
tors safety circuits continuously.
• R and G thermostat contacts open, completing the
call for fan.
• Circulator blower is de-energized. Electronic air
cleaner terminals are de-energized.
• Furnace awaits next call from thermostat.
S - P
TART UP ROCEDURE AND
Furnace must have a 115 VAC power supply properly con-
nected and grounded. Proper polarity must be maintained
for correct operation. An interlock switch prevents furnace
operation if the blower door is not in place. Keep the blower
access door in place except for inspection and maintenance.
This furnace is also equipped with a self-diagnosing elec-
tronic control module. In the event a furnace component is
not operating properly, the control module LED will flash on
and off in a factory-programmed sequence, depending on
the problem encountered. This light can be viewed through
the observation window in the blower access door. Refer to
the Troubleshooting Chart for further explanation of the light-
ing codes.
Follow the start-up and adjustment items, refer to further
information in Section XIII, Operational Checks.
F
URNACE OPERATION
Purge gas lines of air prior to start-up. Do not purge lines
into an enclosed burner compartment.
Check for leaks using an approved chloride-free soap and
water solution, an electronic combustible gas detector, or
other approved method. Verify that all required kits (pro-
pane gas, high altitude, etc.) have been appropriately in-
stalled.
84
A
DJUSTMENT
NOTE: An interlock switch prevents furnace operation if the
blower door is not in place. Keep the blower access doors
in place except for inspection and maintenance.
F S -
URNACE TART UP
1. Close the manual gas shutoff valve external to the fur-
nace.
2. Turn off the electrical power to the furnace.
3. Set the room thermostat to the lowest possible setting.
4. Remove the burner compartment door.
NOTE: This furnace is equipped with an ignition device which
automatically lights the burner. Do not try to light the burner
by hand.
5. Move the furnace gas valve manual control to the OFF
position.
6. Wait five minutes then smell for gas. Be sure check near
the floor as some types of gas are heavier than air.
7. If you smell gas after five minutes, immediately follow
the instructions on page 3 of this manual. If you do not
smell gas after five minutes, move the furnace gas valve
manual control to the ON position.
8. Replace the burner compartment door.
9. Open the manual gas shutoff valve external to the fur-
nace.
10. Turn on the electrical power to the furnace.
11. Adjust the thermostat to a setting above room tempera-
ture.
12. After the burners are lit, set the thermostat to desired
temperature.
NOTE: There is an approximate 40 second delay between
thermostat energizing and burner firing.
F S
URNACE HUTDOWN
1. Set the thermostat to lowest setting.
2. Turn off the electrical power supply to the furnace.
3. Remove the burner compartment door and move the fur-
nace gas valve manual control to the OFF position.
4. Close manual gas shutoff valve external to the furnace.
5. Replace the burner compartment door.