Rheem RGFG Installation Instructions Manual page 67

TABLE 20
NORMAL OPERATION CODES
CODE AT DUAL 7-SEGMENT DISPLAY OF IFC: C
C
DESCRIPTION: Indicates low cooling for legacy systems only. This code is not used in communicating
systems.
DESCRIPTION: This code indicates the furnace is in cooling mode (any stage) for communicating systems)
high stage only for legacy systems.
LOW COOLING MODE
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