Ifc Fault Codes - American Standard CUX1B040A9241A Installation, Operation And Maintenance Manual

Service Instructions
INTEGRATED FURNACE CONTROL ERROR FLASH CODES
Flashing Slow ---
Flashing Fast ---
Continuous ON ---
Continuous OFF ---
2 Flashes ---
3 Flashes ---
4 Flashes ---
5 Flashes ---
6 Flashes ---
7 Flashes ---
8 Flashes ---
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Normal - No call for Heat
Normal - Call for Heat
Replace IFC
Check Power
System Lockout (Retries or Recycles exceeded)
Draft Pressure Error - Possible problems:
a) Venting problem
b) Pressure switch problem
c) Inducer problem
Open Temperature Limit Circuit
Flame sensed when no flame should be present
115 volt AC power reversed, poor grounding or system voltage too low
Gas valve circuit error
Low flame sense signal
FLAME
Pub. No. 41-5016-12