Service Instructions
Pub. No. 41-5016-12
Page 46
INTEGRATED FURNACE CONTROL ERROR FLASH CODES
Flashing Slow ---
Normal - No call for Heat
Flashing Fast ---
Normal - Call for Heat
Continuous ON ---
Replace IFC
Continuous OFF ---
Check Power
2 Flashes ---
System Lockout (Retries or Recycles exceeded)
3 Flashes ---
Draft Pressure Error - Possible problems:
a) Venting problem
b) Pressure switch problem
c) Inducer problem
4 Flashes ---
Open Temperature Limit Circuit
5 Flashes ---
Flame sensed when no flame should be present
6 Flashes ---
115 volt AC power reversed, poor grounding or system voltage too low
7 Flashes ---
Gas valve circuit error
8 Flashes ---
Low flame sense signal
IFC FAULT CODES
FLAME