Service and Troubleshooting 80% Single Stage Gas Furnaces GM9S80, AM9S80, GC9S80, AC9S80, VM9S80, VC9S80 & Accessories Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service.
IMPORTANT INFORMATION IMPORTANT NOTICES RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service manual.
IMPORTANT INFORMATION WARNING If the information in these instructions is not followed exactly, a fire or explosion may result 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.
PRODUCT IDENTIFICATION NOMENCLATURE The model and manufacturing number are used for positive identification of component parts used in manufacturing. Please use these numbers when requesting service or parts information. A 1 Brand G - Goodman® Brand V - GMC® Brand A- AMANA® Brand Configuration M - Upflow/Horizontal C - Downflow/Horizontal 8 5 0 6 0 7 6 8 0 9 3 10 B 11 N 12 A 13 A 14 Nox N = > 40 NG/J NOx X = < 40 NG/J NOx U = < 14NG/J NOx Cabinet Width A - 14" B - 17.5" C - 21" D - 24.
SYSTEM OPERATION NORMAL SEQUENCE OF OPERATION Power Up 1. 115 VAC power applied to furnace. 2. Integrated ignition control module performs internal checks. 3. Integrated ignition control module LED will light. 4. Integrated ignition control monitors safety circuits continuously. 5. Furnace awaits call from thermostat. Normal Heating Sequence 1. R and W thermostat contacts close, initiating a call for heat. 2. Integrated control module performs safety circuit checks. 3.
SYSTEM OPERATION applicable codes. The furnace must be electrically grounded in accordance with local codes or, in their absence, with the latest edition of The National Electric Code, ANSI NFPA 70 and/or The Canadian Electric Code CSA C22.1. An electrical disconnect must be provided at the furnace location. NOTE: Line polarity must be observed when making field connections. Connect hot, neutral, and ground wires as shown in the wiring diagram located on the unit’s blower door.
SYSTEM OPERATION Twinning Two furnaces of the same model may be twinned. The integrated control board has a 3/16” terminal labeled “TWIN” located beside the low voltage thermostat connection strip. Twinning allows simultaneous operation of two furnaces and forces the indoor blower motors of each furnace to operate synchronously into a common duct system. Using the twinning function will require only field installed wiring with no external kits or parts.
SYSTEM OPERATION • • 24V HUM Terminal is energized when pressure switch is closed WRGCY 24 VOLT HUM. & HUMIDISTAT 24 Volt Humidifier Connection Furnace Startup 1. Close the manual gas shutoff valve external to the furnace. 2. Turn off the electrical power to the furnace. 3. Set the room thermostat to the lowest possible setting. 4. Remove the burner compartment door. NOTE: This furnace is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. 5.
SYSTEM OPERATION 3. When the center switch is pressed, the current displayed speed will be selected, and control will immediately apply that speed setting. THERMOSTAT CALL AVAILABLE SPEEDS G F01 (DEFAULT) F02 F03 F04 F05 F06 F07 F08 F09 Circulation Speed Table Cooling Mode Speed Selection To change the main blower speed in COOLING mode, follow the following steps: 1. Press the left or right switch until LED displays “AC1 “(for single stage COOLING) or “AC2 “(for two-stage COOLING).
SYSTEM OPERATION Safety Please adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the furnace. WARNING To prevent personal injury or death due to improper installation, adjustment, alteration, service, or maintenance, refer to this manual. For additional assistance or information, consult a qualified installer, servicer, agency or the gas supplier.
SYSTEM OPERATION Location Requirements and Considerations • WARNING To prevent possible equipment damage, personal injury or death, the following bullet points must be observed when installing the unit. Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in the Combustion and Ventilation Air Requirements section in this manual or the installation instructions for details.
SYSTEM OPERATION f. PROVIDE 8" MINIMUM CLEARANCE BETWEEN CENTER ROD AND FURNACE CABINET TO ALOW FOR CIRCULATOR BLOWER REMOVAL. 3/8" DIAMETER THREADED ROD (6 PLACES) ALTERNATE GAS PIPING ASSURE FURNACE IS LEVEL FROM END TO END. ON 90% FURNACES MAKE SURE THE UNIT HAS A SLIGHT FORWARD TILT WITH THE FRONT OF THE FURNACE 0"-3/4" BELOW THE BACK OF THE FURNACE.
SYSTEM OPERATION If this furnace is to be installed in the same space with other gas appliances, such as a water heater, ensure there is an adequate supply of combustion and ventilation air for the other appliances. Refer to the latest edition of the National Fuel Gas Code NFPA 54/ANSI Z223.1 (Section 9.3), or CAN/CGA B149 Installation Codes (Sections 7.2, 7.3, or 7.4), or applicable provisions of the local building codes for determining the combustion air requirements for the appliances.
SYSTEM OPERATION (2) Combining spaces in different stories. The volumes of spaces in different stories shall be considered as communicating spaces where such spaces are connected by one or more openings in doors or floors having a total minimum free area of 2 in.2/1000 Btu/hr (4400 mm2/kW) of total input rating of all appliances. (2)*Where communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 in.
SYSTEM OPERATION (3) Outdoor Opening(s) Size. The outdoor opening(s) size shall be calculated in accordance with the following: (a) The ratio of the interior spaces shall be the available volume of all communicating spaces divided by the required volume. (b) The outdoor size reduction factor shall be 1 minus the ratio of interior spaces. (c) The minimum size of outdoor opening(s) shall be the full size of outdoor opening(s) calculated in accordance with 9.3.3, multiplied by the reduction factor.
SYSTEM OPERATION NOTE: The vertical height of the Category I venting system must be at least as great as the horizontal length of the venting system. WARNING To prevent possible death or personal injury due to asphyxiation, common venting with other manufacturer’s induced draft appliances is not allowed. When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large to properly vent the remaining attached appliances.
SYSTEM OPERATION Proper Chimney Termination? (Check 1) No 10' or Less Line, terminate with listed vent cap (Fix 1) 2' Min. 2' Min. 3' Min. Yes Chimney channel free of solid and liquid fuel appliances? (Check 2) Wall or Parapet No Change venting arrangements (Fix 2) Chimney 10' or Less Yes Crown in good condition (Check 3) No Rebuild crown (Fix 3) and/or Reline (Fix 4) Yes Cleanout free of debris? (Check 4) Ridge 2' Min. 3' Min.
SYSTEM OPERATION d. e. f. Tile liner cracked No tile liner Salt staining at mortar joints. (White stains, and mortar becomes sandy and/or erodes.) For problems a, b, or c, see Fix 3. If problems d, e, or f are present, see Fix 4. IMPORTANT: It may be necessary to follow both Fix 3 and Fix 4. Check 4 - Debris in Cleanout A cleanout (dropleg) must be present such that the upper edge of the cleanout cover is at least 12 inches below the lower edge of the lowest chimney inlet opening.
SYSTEM OPERATION Check 7 - Complete the Installation If Checks 1 through 6 have been satisfactory, and the liner is an acceptable size as determined by the tables in National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CGA B149.1 and CAN/CGA B149.2 - latest editions and amendments, then the clay tile liner can probably be used as a vent for the gas appliances.
SYSTEM OPERATION For sizing of flexible liners, see Note 22 and the tables in the National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition and in the National Standard of Canada, CAN/CGA B149.1 and CAN/CGA B149.2 - latest editions and amendments. This furnace is shipped from the factory configured for natural gas at standard altitude. Propane gas installations require an orifice change to compensate for the energy content difference between natural and propane gas.
SYSTEM OPERATION provide the proper design certified input rate within the specified altitude range. suring the gas supply pressure and manifold pressure are provided on the valve. High altitude kits are purchased according to the installation altitude and usage of either natural or propane gas. Refer to the product Specification Sheet or Technical Manual for a tabular listing of appropriate altitude ranges and corresponding manufacturer’s high altitude (Natural, Propane gas, and/or Pressure Switch) kits.
SYSTEM OPERATION 3. Use ground joint unions. 4. Install a drip leg to trap dirt and moisture before it can enter the gas valve. The drip leg must be a minimum of three inches long. 5. Install a 1/8” NPT pipe plug fitting, accessible for test gage connection, immediately upstream of the gas supply connection to the furnace. 6. Use two pipe wrenches when making connection to the gas valve to keep it from turning. The orientation of the gas valve on the manifold must be maintained as shipped from the factory.
SYSTEM OPERATION Sizing Between Second or Second Stage Regulator & Appliance* Maximum Propane Capacities listed are based on 1/2" W.C. pressure drop at 11" W.C. setting. Capacities in 1,000 BTU/hour. WARNING If the gas furnace is installed in a basement, an excavated area or a confined space, it is strongly recommended to contact a propane supplier to install a gas detecting warning device in a case of a gas leak.
SYSTEM OPERATION original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C. Any replacement wiring must be copper conductor. CIRCULATING AIR AND FILTERS DUCTWORK - AIR FLOW Duct systems and register sizes must be properly designed for the C.F.M. and external static pressure rating of the furnace.
SCHEDULED MAINTENANCE WARNING HIGH VOLTAGE Disconnect ALL power before servicing or changing any electrical wiring. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. CAUTION If you must handle the ignitor, handle with care. Touching the ignitor body with bare fingers, rough handling, or vibration could result in early ignitor failure. Only a qualified servicer should ever hanlde the ignitor.
SCHEDULED MAINTENANCE Induced Draft and Circulation Blowers The bearings in the induced draft blower and circulator blower motors are permanently lubricated by the manufacturer. No further lubrication is required. Check motor windings for accumulation of dust which may cause overheating. Clean as necessary. Flame Sensor (Qualified Servicer Only) Under some conditions, the fuel or air supply can create a nearly invisible coating on the flame sensor.
SCHEDULED MAINTENANCE CLOCKING A GAS METER 1. Turn off all gas appliances in the home. 2. Turn on the furnace. Ensure the furnace is operating at a 100% firing rate on 2 stage and modulating furnace product. 3. Once heating cycle is at a steady state (typically 15 minutes of operation), use a stopwatch to time how long it takes the smallest unit of measure dial on the gas meter to make a full revolution. In Table 1, one cubic foot is selected.
SCHEDULED MAINTENANCE 5. Use this formula to verify the Cubic Feet per Hour (CFH) input determined in step 4 is correct: (3600 x Gas Meter Dial Size) / Time (seconds) = Cubic Feet per Hour (CFH) 3600 is used as there are 60 seconds in a minute and 60 minutes in an hour. 60x60=3600 6. Check with your local utility for actual BTU content (caloric value) of natural gas in the area (the average is 1025 BTU’s). 7.
SERVICING INCOMING POWER 120.00 0.00 GND GND THIS IS L1 OR THE HOT POWER LEG THIS IS THE COMMON OR NEUTRAL LEG These then should be wired to the furnace accordingly. CHECKING FOR PHASING - PRIMARY TO SECONDARY OF UNMARKED TRANSFORMERS* GND C N R L1 METER READS 120 VOLTS METER READS 24 VOLTS . . . READS 96 VOLTS - IN PHASE TRANSFORMER GND LINE VOLTAGE (NEUTRAL) GND R N R L1 PRIMARY SECONDARY C C LINE VOLTAGE L1 (HOT) . .
SERVICING CHECKING VOLTAGE CHECKING THERMOSTAT, WIRING WARNING HIGH VOLTAGE Disconnect ALL power before servicing or changing any electrical wiring. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. 1. Remove the burner door to gain entry to the Junction Box. 2. Remove cover from the Junction Box and gain access to incoming power lines. Disconnect ALL power before servicing. 1.
SERVICING Some of the electronic boards being used today, with flame rectification, will not function properly and/or at all without polarization of incoming power. Some also require phasing between the primary and secondary sides of step-down transformers. A step-down transformer 120 volt primary to 24 volt secondary, 40 VA (Heating and Cooling Models) supplies ample capacity of power for either operation. WARNING HIGH VOLTAGE Disconnect ALL power before servicing or changing any electrical wiring.
SERVICING Motor Tap Identification CONNECTOR ID L G N C 1 2 3 4 5 DESCRIPTION LINE, L1 GROUND LINE, L2 SIGNAL COMMON TAP 1 TAP 2 TAP 3 TAP 4 TAP 5 CONNECTOR VOLTAGE LINE, L1 CHASSIS GROUND LINE, L2 24VAC COMMON 24VAC 24VAC 24VAC 24VAC 24VAC . WARNING Disconnect ALL power before servicing. CHECKING DUCT STATIC The maximum and minimum allowable external static pressures are found in the specification section.
SERVICING 3. Subtract the return air temperature from the supply air temperature to determine the air temperature rise. Allow adequate time for thermometer readings to stabilize. 4. Adjust temperature rise by adjusting the circulator blower speed. Increase blower speed to reduce temperature rise. Decrease blower speed to increase temperature rise. Refer to Circulator Blower Speed section in the Product Design section of this manual for speed changing details.
SERVICING WARNING HIGH VOLTAGE Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. The control is designed to open should a flame roll out occur. An over firing condition or flame impingement on the heat shield may also cause the control to open. If the rollout control opens, the air circulation blower will run continuously.
SERVICING INDUCED DRAFT BLOWER MOTOR WARNING HIGH VOLTAGE Disconnect ALL power before servicing or installing this unit. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. 1. Remove burner compartment door to gain access to the induced draft blower motor. 2. Disconnect the motor wire leads from its connection point at the induced draft motor. 3. Using a ohmmeter, test for continuity between each of the motor leads. 4.
SERVICING NOTE: Use adapter kit #0151K00000S to measure gas pressure on White-Rodgers 36J22 gas valves. A GAS STREAM B The length of Dimension “A” determines the angle of Gas Stream “B”. DENT OR BURR GAS STREAM B . A dent or burr will cause a severe deflection of the gas stream.
SERVICING Gas Manifold Pressure Measurement and Adjustment CAUTION To prevent unreliable operation or equipment damage, the gas manifold pressure must be as specified on the unit rating plate. Only minor adjustments should be made by adjusting the gas valve pressure regulator. NOTE: Use adapter kit #0151K00000S to measure gas pressure on White-Rodgers 36J22 gas valves. Only small variations in gas pressure should be made by adjusting the gas valve pressure regulator.
SERVICING Gas Valve On/Off Selector Switch Inlet Pressure Tap INLET OUTLET Pressure Regulator Adjustment (Under Cap Screw) Outlet Pressure Tap 6. After checking and/or replacing of hot surface ignitor, reinstall burner compartment door and verify proper unit operation. CHECKING FOR FLASHBACK WARNING HIGH VOLTAGE Disconnect ALL electrical power and shut off gas supply before servicing or installing. Nominal 10.0" w.c.
SERVICING . In some areas the gas supplier may artificially derate the gas in an effort to compensate for the effects of altitude. If the gas is artificially derated the appropriate orifice size must be determined based on the BTU/ft3 content of the derated gas and the altitude. Refer to the National Fuel Gas Code, NFPA 54/ANSI Z223.1, and information provided by the gas supplier to determine the proper orifice size.
SERVICING WARNING Flame Sensor Line Voltage now present. These tests must be completed within a given time frame due to the operation of the ignition control. NOTE: The models use White-Rodgers 50X57- 290 1. Check for 120 volts from Line 1 (Hot) to Line 2 (Neutral) at the ignition control. No voltage, check the door switch connections and wire harness for continuity. 2. Check for 24 volts from W to C terminal on the ignition control. No voltage. Check transformer, room thermostat, and wiring.
SERVICING *M9S80 / *C9S80 Pressure Switch Trip Points And Usage Chart MODEL *M9S800403A* *M9S800603A* *M9S800603B* *M9S800604B* *M9S800803B* *M9S800804B* *M9S800804C* *M9S800805C* *M9S801005C* *M9S801205D* *C9S800403A* *C9S800603A* *C9S800804B* *C9S800805C* *C9S801005C* Set Point on Pressure Fall (PF) W.C. -0.70 ±0.06 -0.75 ±0.07 -0.75 ±0.07 -0.75 ±0.07 -0.70 ±0.06 -0.70 ±0.06 -0.75 ±0.07 -0.75 ±0.07 -0.70 ±0.06 -0.80 ±0.05 -0.60 ±0.06 -0.60 ±0.06 -0.60 ±0.06 -0.60 ±0.06 -0.80 ±0.
GM9S80 AIRFLOW TABLES LOW STAGE COOLING AIRFLOW MODEL THERMOSTAT CALL *M9S800403A* Y/Y1 *M9S800603A* Y/Y1 *M9S800603B* Y/Y1 *M9S800604B* Y/Y1 *M9S800803B* Y/Y1 *M9S800804B* Y/Y1 *M9S800804C* Y/Y1 *M9S800805C* Y/Y1 *M9S801005C* Y/Y1 *M9S801205D* Y/Y1 TAP # F01 F02 F03 F04^ F05 F06 F07 F08 F09 F01 F02 F03 F04^ F05 F06 F07 F08 F09 F01 F02 F03 F04^ F05 F06 F07 F08 F09 F01 F02 F03 F04^ F05 F06 F07 F08 F09 F01 F02 F03 F04^ F05 F06 F07 F08 F09 F01 F02 F03 F04^ F05 F06 F07 F08 F09 F01 F02 F03
GM9S80 AIRFLOW TABLES HIGH STAGE COOLING AIRFLOW MODEL THERMOSTAT CALL *M9S800403A* Y2 *M9S800603A* Y2 *M9S800603B* Y2 *M9S800604B* Y2 *M9S800803B* Y2 *M9S800804B* Y2 *M9S800804C* Y2 *M9S800805C* Y2 *M9S801005C* Y2 *M9S801205D* Y2 TAP # 0.
GM9S80 AIRFLOW TABLES CIRCULATION AIRFLOW MODEL 44 THERMOSTAT CALL *M9S800403A* G *M9S800603A* G *M9S800603B* G *M9S800604B* G *M9S800803B* G *M9S800804B* G *M9S800804C* G *M9S800805C* G *M9S801005C* G *M9S801205D* G TAP # F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F
GM9S80 AIRFLOW TABLES HEATING AIRFLOW MODEL THERMOSTAT CALL *M9S800403A* W/W1 *M9S800603A* W/W1 *M9S800603B* W/W1 *M9S800604B* W/W1 *M9S800803B* W/W1 *M9S800804B* W/W1 *M9S800804C* W/W1 *M9S800805C* W/W1 *M9S801005C* W/W1 *M9S801205D* W/W1 TAP # F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04 F01^^ F02^ F03 F04^^ CFM 658 749 925 882 659 1268 1087 1118 720 1289 11
GC9S80 AIRFLOW TABLES LOW STAGE COOLING AIRFLOW MODEL THERMOSTAT CALL *C9S800403A* Y/Y1 *C9S800603A* Y/Y1 *C9S800804B* Y/Y1 *C9S800805C* Y/Y1 *C9S801005C* Y/Y1 TAP # 0.1 0.
GC9S80 AIRFLOW TABLES HIGH STAGE COOLING AIRFLOW MODEL THERMOSTAT CALL *C9S800403A* Y2 *C9S800603A* Y2 *C9S800804B* Y2 *C9S800805C* Y2 *C9S801005C* Y2 TAP # F01 F02 F03 F04 F05^ F06 F07 F08 F09 F01 F02 F03 F04 F05^ F06 F07 F08 F09 F01 F02 F03 F04 F05^ F06 F07 F08 F09 F01 F02 F03 F04 F05^ F06 F07 F08 F09 F01 F02 F03 F04 F05^ F06 F07 F08 F09 0.
GC9S80 AIRFLOW TABLES CIRCULATION AIRFLOW MODEL THERMOSTAT CALL *C9S800403A* G *C9S800603A* G *C9S800804B* G *C9S800805C* G *C9S801005C* G 48 TAP # F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 F01 F02 F03 F04 F05 F06 F07 F08 F09 0.
GC9S80 AIRFLOW TABLES HEATING AIRFLOW MODEL THERMOSTAT CALL *C9S800403A* W/W1 *C9S800603A* W/W1 *C9S800804B* W/W1 *C9S800805C* W/W1 *C9S801005C* W/W1 TAP # F01^^ F02^ F03 F04 F01^^ F02^ F03 F04^^ F01^^ F02^ F03 F04 F01^^ F02^ F03^^ F04 F01^^ F02^ F03 F04 CFM 712 1120 929 1073 706 1035 932 897 760 1286 1393 1459 1022 1453 1176 1710 956 1460 1561 1628 0.
1 STAGE STATUS CODES Menu Description Active Alarm menu Last 6 Faults Main Menu Option Menu xx xx Code Release Number CR Number Reset to Factory Default yes, no Blower Speed for Continous Fan Mode xx Blower Speed for 1st Stage Compressor Mode xx Blower Speed for 2nd Stage Compressor Mode xx Cool On Delay Blower Speed for Gas Heat Mode xx Automatic Heat Staging - For Two Stage Control ( xx: code numbers ) ( xx: Blower Speed Number
1 STAGE STATUS CODES Mode Idle Continous Fan Compressor Cooling, Low Stage Compressor Cooling, High Stage Gas heat - Single Stage Control OEM test Mode STATUS MENU Main Menu 51
1 STAGE TROUBLESHOOTING CODES TROUBLESHOOTING CHART Symptom Normal operation LED Status Fault Description Corrective Actions Normal operation None Locate and correct gas interruption Replace or realign igniter Furnace fails to operate Furnace lockout due to an excessive number of ignition “retries” (3 total) Failure to establish flame Loss of flame after establishment Check flame sense signal, clean sensor if coated or oxidized Check flue piping for blockage, proper length, elbows, and ter
1 STAGE TROUBLESHOOTING CODES TROUBLESHOOTING CHART Symptom LED Status Fault Description Corrective Actions Flame sense micro amp signal is minimal Flame sensor is coated/oxidized Normal furnace operation Flame sensor incorrectly positioned in burner fame Lazy burner flame due to improper gas pressure or combustion air Problem with igniter circuit Furnace fails to operate Furnace fails to operate Furnace fails to operate Furnace fails to operate Furnace fails to operate.
WIRING DIAGRAMS GN GRD YL GY JUNCTION BOX ID BLOWER PRESSURE SWITCH HOT SURFACE IGNITER L YL DISCONNECT BK TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE C2 WH YL GY FLAME SENSOR SOME UNITS MAY HAVE 1 ROLL OUT SWITCH PU PU PK DISCONNECT JUNCTION BOX RD WH BK NEUTRAL LINE PK HUM-OUT BK WH IND E39 E2 E1 E8 E15 E7 E5 E4 E6 E3 FLAME SENSOR 115 VAC LINE 2 1 BK T5 COM 3 2 5 10 7 1 6 4 12 9 PU 11 8 RIGHT T4 YL BR LEFT 24V THERMOSTA
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