Amana GUIA Series Service Instructions Manual page 109

SYSTEM OPERATION
Cooling Mode
The normal operational sequence in cooling mode is as
follows:
1. R and YLO or Y thermostat contacts close, initiating a
call for cool.
2. Integrated control module performs safety circuit checks.
3. Outdoor fan and compressor are energized to their ap-
propriate speed.
4. Circulator blower is energized on the appropriate cool
speed following a fixed five second on delay. The circu-
lator blower requires 30 seconds to ramp up to full speed.
Electronic air cleaner terminals are energized with cir-
culator blower.
5. Furnace circulator blower and outdoor cooling unit run
their appropriate speed, integrated control module moni-
tors safety circuits continuously.
6. R and YLO or Y thermostat contacts open, completing
the call for cool.
7. Outdoor fan and compressor are de-energized.
8. Circulator blower continues running for a fixed 45-sec-
ond cool off delay period. The speed run during this pe-
riod depends on the last cooling call from the thermo-
stat. If the call was for low cool, the blower will operate
at 88% of low cool speed. If call was for high cool, blower
operate at 88% of high cool speed.
9. Electronic air cleaner terminals and circulator blower
are de-energized.
10. Furnace awaits next call from thermostat.
Fan Only Mode
The normal operational sequence in fan only mode is as
follows:
1. R and G thermostat contacts close, initiating a call for
fan.
2. Integrated control module performs safety circuit checks.
3. 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.
4. Circulator blower runs, integrated control module moni-
tors safety circuits continuously.
5. R and G thermostat contacts open, completing the call
for fan.
6. Circulator blower is de-energized. Electronic air cleaner
terminals are de-energized.
7. Furnace awaits next call from thermostat.
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