5407934-UIM-C-1119
Johnson Controls Ducted Systems 51
FURNACE: PRESSURE
SWITCH CLOSED
Pressure switch closed with inducer
pressure below pressure switch set-
point (switch is closed when it should
be open). Check pressure switch.
Efficiency
FURNACE: SOFT LIMIT
WARNING
Soft limit warning Efficiency
FURNACE: AIR BLOCK-
AGE WARNING
Air blockage warning Efficiency
FURNACE: UNKNOWN
FAILURE
Unknown failure Efficiency
FURNACE: FLAME ROD
AGE WARNING
Flame rod age warning Efficiency
TABLE 16:
Modulating Furnace (Continued)
Fault (Displayed Text) Description Category
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