Trane UD1D120A9H51B manual Integrated Furnace Control Error Flash Codes, Installer’s Guide

Installer’s Guide

2.LOSS OF FLAME OR GAS SUPPLY FAILURE If loss of flame occurs during a heating cycle (when flame is not present at the sensor), the control mod- ule will retry the ignition sequence up to two times after the sensor cools. If ignition is not achieved, it will lockout the furnace.

3.POWER FAILURE

If there is a power failure during a heating cycle, the system will restart the ignition sequence auto- matically when power is restored, if the thermostat still calls for heat.

4.INDUCED DRAFT BLOWER FAILURE

If pressure is not sensed by the pressure switch, it will not allow the gas valve to open, therefore the unit will not start. If failure occurs during a running cycle, the pressure switch will cause the gas valve

to close and shut the unit down.

Carbon monoxide, fire or smoke can cause serious bodily injury, death, and/ or property damage.

A variety of potential sources of carbon monoxide can be found in a building or dwelling such as gas-fired clothes dryers, gas cooking stoves, water heaters, furnaces and fireplaces. The U.S. Consumer Product Safety Commis- sion recommends that users of gas-burning appliances install carbon monoxide detectors as well as fire and smoke detectors per the manufacturers installation in- structions to help alert dwelling occupants of the pres- ence of fire, smoke or unsafe levels of carbon monoxide.

These devises should be listed by Underwriters Labora- tories, Inc. Standards for Single and Multiple Station Carbon Monoxide Alarms, UL 2034 or CSA Interna- tional Standard, Residential Carbon Monoxide Alarming Devices, CSA 6.19.

NOTE:

The manufacturer of your furnace does not test any de- tectors and makes no representations regarding any brand or type of detector.

▲! WARNING

Failure to follow safety warnings exactly, could result in a fire or explosion causing property damage, personal injury or loss of life.

—Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

—WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electrical switch;

do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas supplier, call the fire department.

—Installation and service must be performed by

a qualified installer, service agency or the gas supplier.

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]
Trane
6200 Troup Highway		File Number	18-CD21D1-5
Tyler, TX 75707
		Supersedes	18-CD21D1-4
		Date	05/08

For more information contact
your local dealer (distributor)	Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right
24	to change design and specifications without notice.	18-CD21D1-5