Carrier 59SC2C Series Installation, Start-up, Operating And Service And Maintenance Instructions

Also see for 59SC2B: Product data

745. The LED will flash the last stored fault code. Refer to theService Label (Fig. 61) to interpret the LED.6. A component test sequence will follow.7. Reinstall the Main/Control door.Component Self-TestNOTE: The furnace control component test allows allcomponents to run for a short time; except the gas valve andhumidifier terminal HUM are not energized. The EAC-1 terminalis energized when the blower is energized. This feature helpsdiagnose a system problem in case of a component failure. Thecomponent test feature will not operate if any thermostat signal ispresent at the control and not until all time delays are completed.To Begin Component Self-Test:1. Remove blower access door.2. Disconnect the thermostat R lead from furnace control.3. Manually close blower door switch.Caution must be taken when manually closing this switch forservice purposes.ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personal injury,or death.Blower door switch opens 115--v power to furnace control.No component operation can occur unless switch is closed.Exercise caution to avoid electrical shock from exposedelectrical components when manually closing this switch forservice purposes.! WARNING4. For approximately 2 sec, short (jumper) the COM-24vterminal on control to the TEST/TWIN 3/16—in. (5 mm)quick-connect terminal on control until the LED goes off.Remove jumper from terminals. See Fig. 38.NOTE: If TEST/TWIN and COM-24v terminals are jumperedlonger than 2 sec, LED will flash rapidly and ignore componenttest request.Component test sequence is as follows:a. LED will display previous status code 4 times.b. Inducer motor starts and continues to run until Step f ofcomponent test sequence.c. After 7 sec the hot surface igniter is energized for 15 sec.,then off.d. Blower motor operates on HEAT speed for 10 sec.e. Blower motor operates on COOL speed for 10 sec.f. Inducer motor stops.5. Reconnect R lead to furnace control, remove tape fromblower door switch, and re-install blower door.6. Verify furnace shut down by lowering thermostat settingbelow room temperature.7. Verify that furnace restarts by raising thermostat settingabove room temperature.Checklist1. Put away tools and instruments. Clean up debris.2. Verify that the jumper is removed from the TEST/TWINterminal. Verify that there is nothing plugged into the PLTconnector. (Note: If there is a jumper connector pluggedinto PLT, remove it and discard.) See Fig. 38.3. Verify that the Blower/Heat Off Delay jumpers are set asdesired. See Fig. 38.4. Verify that the blower and control (“Main”) doors areproperly installed.5. Verify that the Status LED glows. If not, check that thepower supply is energized and that the blower door issecure. See Fig. 61.6. Cycle test furnace with room thermostat to be sure that itoperates properly with the room thermostat. Check allmodes including Heat, Cool and Fan.7. Check operation of accessories per manufacturer’sinstructions.8. Review Owner’s Manual with owner.9. Attach entire literature packet to furnace.Care and MaintenanceFIRE OR EXPLOSION HAZARDFailure to follow this warning could result in personalinjury, death and/or property damage.Never store flammable or combustible materials on, near, orin contact with the furnace, such as:1. Spray or aerosol cans, rags, brooms, dust mops,vacuum cleaners, or other cleaning tools.2. Soap powders, bleaches, waxes or other cleaningcompounds, plastic or plastic containers, gasoline,kerosene, cigarette lighter fluid, dry cleaning fluids,or other volatile fluids.3. Paint thinners and other painting compounds, paperbags, or other paper products. Exposure to thesematerials could lead to corrosion of the heatexchangers.! WARNINGFor continuing high performance and to minimize possible furnacefailure, periodic maintenance must be performed on this furnace.Consult your local dealer about proper frequency of maintenanceand the availability of a maintenance contract.ELECTRICAL SHOCK AND FIRE HAZARDFailure to follow this warning could result in personal injury,death, and/or property damage.Turn off the gas and electrical supplies to the furnace andinstall lockout tag before performing any maintenance orservice. Follow the operating instructions on the labelattached to the furnace.! WARNINGCARBON MONOXIDE POISONING AND FIREHAZARDFailure to follow this warning could result in personalinjury, death and/or property damage.Never operate furnace without a filter or filtration deviceinstalled. Never operate a furnace with filter or filtrationdevice access doors removed.! WARNINGCUT HAZARDFailure to follow this caution may result in personal injury.Sheet metal parts may have sharp edges or burrs. Use careand wear appropriate protective clothing, safety glasses andgloves when handling parts, and servicing furnaces.CAUTION!59SC2C