Trane DX1C100A9481A manual Installer’s Guide, Integrated Furnace Control Error Flash Codes

Installer’s Guide

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)
	Draft Pressure Error - Possible problems:
3 Flashes ---	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
9 Flashes ---	Check Ignitor Circuit and Line "N" to 24VAC "Common" voltage (≤ 2 volts)
	[possible grounding problem]

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