18-CD29D1-3
39
Installer’s Guide
TABLE 21
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 seitch problem
c) Inducer problem
4 Flashes ---
Open High Limit Device
5 Flashes ---
Flame sensed when no flame should be present
6 Flashes ---
115 Volt AC power reversed or Poor Grounding
7 Flashes ---
Gas valve circuit error
8 Flashes ---
Low flame sense signal
9 Flashes ---
Check Ignitor circuit and Line "N" to 24VAC
"Common" voltage (< 2volts)
(possible grounding problem)
