18-CD19D7-22
21
Installer’s Guide
IFC ERROR FLASH CODES
▲
WARNING
!
Should overheating occur, or the gas supply fail to shut off,
shut off the gas valve to the unit before shutting off the
electrical supply. Failure to follow this warning could result
in property damage, personal injury or death.
▲
WARNING
!
The following warning complies with State of California law, Proposition 65.
This product contains fiberglass wool insulation!
Fiberglass dust and ceramic fibers are believed by the
State of California to cause cancer through inhalation.
Glasswool fibers may also cause respiratory, skin, or
eye irritation.
PRECAUTIONARY MEASURES
●
Avoid breathing fiberglass dust.
●
Use a NIOSH approved dust/mist respirator.
●
Avoid contact with the skin or eyes. Wear long-sleeved,
loose-fitting clothing, gloves, and eye protection.
●
Wash clothes separately from other clothing: rinse
washer thoroughly.
●
Operations such as sawing, blowing, tear-out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respirator in these situations.
FIRST AID MEASURES
Eye Contact
–
Flush eyes with water to remove dust.
If symptoms persist, seek medical
attention.
Skin Contact –
Wash affected areas gently with soap
and warm water after handling.
OPERATING INFORMATION
FLAME ROLL-OUT DEVICE
All models are equipped with a thermal control device on the
burner cover. In case of flame roll-out, the device will cause
the circuit to open which shuts off all flow of gas.
ABNORMAL CONDITIONS
1. EXCESSIVE COMBUSTION VENT PRESSURE OR
FLUE BLOCKAGE
If pressure against the induced draft blower outlet
becomes excessive, the pressure switch will shut off the
gas valve until acceptable combustion pressure is again
available.
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 module
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 automatically
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 Commission
recommends that users of gas-burning appliances install
carbon monoxide detectors as well as fire and smoke detec-
tors per the manufacturer’s installation instructions to help
alert dwelling occupants of the presence of fire, smoke or
unsafe levels of carbon monoxide. These devices should be
listed by Underwriters Laboratories, Inc.
Standards for
Single and Multiple Station Carbon Monoxide Alarms, UL
2034
or CSA International Standard,
Residential Carbon
Monoxide Alarming Devices,
CSA 6.19
NOTE: The manufacturer of your furnace does not test any
detectors and makes no representations regarding any
brand or type of detector.
TABLE 17
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 Temperature Limit Circuit
5 Flashes ---
Flame sensed when no flame should be present
6 Flashes ---
115 Volt AC power reversed or 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 (< 2volts)
(possible grounding problem)
