SYSTEM OPERATION
11
heat.
• Integrated control module performs safety circuit checks.
• The control operates
the inducer in a manner to verify the pressure sensor
null value and span operation are within specication.
If the system is operating correctly, this test takes only
a few seconds. If the system is not functioning properly,
the control times out after a maximum 90 seconds and
display the proper fault code.
• Induced draft blower is energized for 30 second
prepurge.
• Igniter warm up begins after 30 second prepurge expires.
• Gas valves open at end of igniter warm up period,
delivering gas to burners and establishing ame.
• Integrated control module monitors ame presence. Gas
valve will remain open only if ame is detected.
• Circulator blower is energized on high heat speed
following a xed 30 second blower on delay. Electronic
air cleaner terminals are energized with circulator blower.
• Furnace operates; integrated control module monitors
safety circuits continuously.
• R and W thermostat contacts open, completing the call
for heat.
• Gas valve closes, extinguishing ame.
• Induced draft blower is de-energized following a thirty
second post purge.
• HUM terminal is de-energized.
• Circulator blower continues running for selected heat o
delay period factory set at 120 seconds. If required this
can be changed in the eld.
• Electronic air cleaner is de-energized.
• Furnace awaits the next call from thermostat.
The normal operational sequence in cooling mode is as
follows:
• R, Y and G thermostat contacts close, initiating a call
for cool.
• Integrated control module performs safety circuit checks.
• Outdoor fan and compressor are energized.
• Circulator blower is energized on cool speed following a
xed six second on delay. If required this can be changed
in the eld to 45 seconds. Electronic air cleaner terminals
are energized with circulator blower.
• Furnace circulator blower and outdoor cooling unit
run, integrated control module monitors safety circuits
continuously.
• R, Y and G thermostat contacts open, completing the
call for cool.
• Outdoor fan and compressor are de-energized.
• Circulator blower is de-energized following a xed forty
rve second cool o delay period. Electronic air cleaner
terminals are de-energized.
• Furnace awaits the next call from thermostat.
The normal operational sequence in Fan Only Mode is as
follows:
• R and G thermostat contacts close, initiating a call for
fan.
• Integrated control module performs safety circuit checks.
• Circulator blower is energized on low heat speed.
Electronic air cleaner terminals are energized.
• Circulator blower runs, integrated control module
monitors safety circuits continuously.
Each 80% ULN model has a unique ID Plug that needs to
be installed into the board for your specic model number.
The ID plug will populate the board with the correct operating
parameters for each model and should be left in the board
once installed.:
Please see the table below for reference.
Part Number Goodman / Amana
0130F00773 *MES800403AUAA
0130F00765 *MES800603AUAA
0130F00766 *MES800604BUAA
0130F00767 *MES800804BUAA
0130F00768 *MES800805CUAA
The following procedure will ensure the proper operating
parameters are installed onto the board. Each model has a
unique ID PLUG that needs to be installed into the board for
your specic model number. Please see the instruction below.
1. 1. Select the appropriate ID plug for the installed
model number from the table above.
2. Attach the appropriate ID Plug for the installed model
number to the control board into the blue connector
as shown below. This will load the correct parame-
ters to the board. Failure to follow these instructions
will result in the board not functioning.
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