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On downflow furnaces, the blower access door must be removed before the control access door is removed, then reinstalled. • Is the control knob on the internal gas valve turned to the ON position? If it is not, be sure it has not been turned OFF for the purpose of safety. If nothing else seems to be amiss, follow the startup procedures found on the furnace. • If your furnace has a manual ignition (continuous) pilot system, check for pilot flame. If there is no pilot flame, follow the manual startup procedures on the furnace label. If the pilot flame exists, check the control knob on the internal gas valve. If the knob is in the PILOT position, turn it to the ON position and complete the startup procedures. • If your furnace uses an automatic, intermittent ignition pilot, check the control knob on the internal gas valve to be sure that it is in the ON position. If it is not, follow the appropriate startup procedures on the furnace label. • DOWNFLOW FURNACES ONLY: Check the manual-reset auxiliary limit switch located on the top right-hand comer of the furnace. See Fig, 4. If the blower motor fails, this switch will shut off the furnace. Reset it by pushing the button on the switch. If it trips again, shut down the furnace and call for service. Refer to the lighting/operating instructions label affixed to your furnace blower access door (See Figs. 1 and 2 for door identification.) for shutdown procedures. • Check the manual reset switch for the blocked vent shutoff system (located on the bottom of the draft diverter). See Fig. 3 or 4. If the vent is totally obstructed, the blocked vent shutoff system switch will shut off the furnace internal gas valve. To reset the switch: remove the furnace control door, push the reset button located on the back side of the switch, and reinstall the control door. If the blocked vent shutoff system switch trips for a second time, shut down the furnace and call a qualified service agency for service. Refer to the lighting/operating instructions label affixed to your furnace blower access door (See Figs. 1 and 2 for door identification.) for shutdown procedures. • If your furnace still fails to operate, call a qualified service agency for troubleshooting and repairs. Specify the product and serial numbers of your furnace. (You should have them recorded on page 2 of this manual.) If the dealer knows exactly which furnace you have, he may be able to offer suggestions over the phone, or save valuable time through knowledgeable preparation for the service call. REGULAR DEALER MAINTENANCE In addition to the type of routine maintenance you might be willing to perform, your furnace should be inspected regularly by a qualified service agency. An inspection (preferably each year, but at least every other year) should include the following: • Inspection of all flue product passages—including the burners, pilot, heat exchanger, draft diverter, and vent pipe. • Inspection of all combustion and ventilation air passages and openings in the furnace and building to assure unobstructed air supply. • Close inspection of all gas pipes leading to and inside of your home for leaks and/or deterioration. • Inspection, cleaning, and lubrication (if oil ports are provided) of the blower, blower motor, and wheel. • Routine inspection and cleaning/replacement of the air filter. • Inspection of all supply-air and return-air ducts for air leaks, obstructions, and insulation. • A check for loose fasteners. Inspection of all electrical wiring and their connections. • Operational check of the furnace itself to determine working condition. Repair or adjustment should be made at this time. • Any problems found should be resolved at this time. Your servicing dealer may offer an economical service contract that covers seasonal inspections. Ask him for further details. Jp(lü()»{lii(ltMAy4QiyDM»8AM»MAIIoMoMtSMyAyACiyoioCAMA(W IF YOUR UNIT DOES NOT WORK, FOLLOW THESE STEPS IN ORDER: FIRST: Contact the installer. You may find his name on the product or in your Homeowner’s Packet. If his name is not known, call your builder if yours is a new residence. SECOND: Contact the nearest CARRIER distributor. (See telephone yellow pages.) THIRD: Contact: CARRIER CORPORATION Consumer Relations Department Carrier Parkway Syracuse, New York 13221 Telephone: 1-800-CARRIER Product No. Date of Installation Name of Owner_ Unit Serial No.. Installed by_ Address of Installation WITH UNCOATED HEAT EXCHANGER Furnace Limited Warranty ONE-YEAR WARRANTY—This CARRIER CORPORATION product is warranted to be free from defects in material and workmanship under normal use and maintenance for a period of one year from the date of original installation, whether or not actual use begins on that date. A new or remanufactured part to replace any defective part will be provided at CARRIER CORPORATION'S sole option without charge for the part itself, PROVIDED the defective part is returned to our distributor. This warranty a...

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