Lennox International Inc SL280DFV Reconfigure the system. Replace control if heating

Page 50

Integrated Control Diagnostic Codes (continued)

E 131

Corrupted control parameters (Verify configuration of system). Communi-

Reconfigure the system. Replace control if heating

 

cating only.

or cooling is not available. Only applicable in the

 

 

communicating mode, not in startup. Exit from Com-

 

 

missioning and Execute ’Set Factory Default mode’.

 

 

Control will still operate on default parameter set-

 

 

tings.

 

 

 

E 180

Outdoor air temperature sensor failure. Only shown if shorted or out−of−

Compare outdoor sensor resistance to temperature/

 

range.

resistance charts in unit installation instructions.

 

 

Replace sensor pack if necessary. At beginning of

 

 

(any) configuration, furnace or air handler control

 

 

will sense outdoor air and discharge air temperature

 

 

sensor(s). If detected (reading in range), appropri-

 

 

ate feature will be set as ’installed’ and that could

 

 

be seen in ’About’ screen. In normal operation after

 

 

control recognizes sensors, alarm will be sent if

 

 

valid temperature reading is lost. To get rid of set-

 

 

ting and alarm, redo configuration and make sure

 

 

that temperature sensor is marked as ’not installed’

 

 

in Indoor Unit ’About’ screen. When Indoor unit con-

 

 

trol is replaced, thermostat will ’tell’ new control if

 

 

temperature sensor is in system or not. Clears 30

 

 

seconds after fault recovered.

 

 

 

E 200

Hard lockout − Rollout circuit open or previously open.

Correct cause of rollout trip, or replace flame rollout

 

 

switch. Test furnace operation. Cleared after fault

 

 

recovered.

 

 

 

E 201

Indoor blower communication failure − Unable to communicate with blow-

Indoor blower communication failure (including pow-

 

er motor.

er outage). Lost communication with indoor blower

 

 

motor. Possible causes: motor not powered, loose

 

 

wiring. Problem may be on control or motor side.

 

 

Cleared after fault recovered.

 

 

 

E 202

Indoor blower motor mis−match − Indoor motor horsepower does not

Incorrect appliance capacity code selected. Check

 

match unit capacity. See Page 55.

for proper configuring under: Unit Size Codes for

 

 

Furnace/Air Handler on configuration guide or in

 

 

installation instructions. Cleared after the correct

 

 

match is detected following a reset. (Remove ther-

 

 

mostat from system while applying power and re-

 

 

programming.)

 

 

 

E 203

Appliance capacity / size is NOT programmed. Invalid unit codes refer to

No appliance capacity code selected. Check for

 

configuration flow chart. See Page 55.

proper configuring under: Unit Size Codes for Fur-

 

 

nace on configuration guide or in installation instruc-

 

 

tions. Critical Alert. Cleared after valid unit code is

 

 

read following a reset. (Remove thermostat from

 

 

system while applying power and reprogramming.)

 

 

 

E 204

Gas valve mis−wired.

Check gas valve operation and wiring. Clears when

 

 

repaired.

 

 

 

E 205

Gas valve control relay contact shorted.

Check wiring on control and gas valve. If wiring is

 

 

correct, replace control.

 

 

 

E 206

Gas valve second−stage relay failure

Furnace will operate on 1st stage for remainder of

 

 

the heating demand. Will clear after fault recovered.

 

 

If unable to operate 2nd stage, replace control.

 

 

 

E 207

Hot surface ignitor sensed open − Refer to troubleshooting. See Page 56.

Measure resistance of hot surface ignitor. Replace if

 

 

open or not within specified range found in IOM.

 

 

Resumes normal operation after fault is cleared.

 

 

 

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Contents Installation Instructions SL280DFV Table of ContentsUnit Dimensions − inches mm TOP ViewParts Arrangement Shipping and Packing List Safety InformationSL280DFV Gas Furnace Use of Furnace as Construction Heater GeneralCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from Inside Equipment Confined Space ALL AIR from Outside Equipment in Confined Space ALL AIR from OutsideEquipment in Confined Space Downflow Installation NON−COMBUSTIBLE Floor Opening SizeCooling Coil Setting EquipmentSL280DFV Unit Properly Plenum Sized Floor OpeningFilters Duct System VentingTables for installations −1/2 MIN MAX 126 FAN + FAN FAN + NAT 168 Gas Piping Carbon Monoxide Poisoning HazardGas Pipe Capacity − ft3/hr m3/hr Electrical MAKE−UP BOXNon−Communicating Icomfortt Integrated Control Outdoor Unit Icomfort Touch Applications System Wiring120V Connections 24V Humidifier ConnectionsSL280 Field Wiring Applications With Conventional Thermostat OFF Single Stage Thermostat w Dual fuel capa Bilities SL280DFV Schematic Wiring Diagram Typical SL280DFV Field Wiring Diagram Integrated Control + = Data High Connection − = Data LOW Connection−10% approx OFF On−Board Links Blower Data 1400 Operating System Demand System Response Sequence VAC Room Thermostat Calls for First Stage Cooling Unit Start−Up GAS Valve Shown in on PositionGas Pressure Adjustment Proper CombustionManifold Pressure Settings High AltitudeOther Unit Adjustments Heating Sequence of OperationHeating Operation with TWO−STAGE Thermostat SECService Electrical SHOCK, Fire Or Explosion HazardSL280DFV BURNER, Combustion AIR Inducer Assembly Page Planned Service Repair Parts ListIntegrated Control Diagnostic Modes Integrated Control Diagnostic CodesEquipment is unable to communicate. Indicates Reconfigure the system. Replace control if heating Low pressure switch failed open To flame failure Limiters to protect the motor from damage caused Sor run cycle, or after power reset Program Unit Capacity/Size Mode Volt power−up of the furnace control,Troubleshooting Heating Sequence of Operation Call for FIRST−STAGE HeatCall for SECOND−STAGE Heat Call for Heat SatisfiedCall for Heat Satisfied FIRST−STAGE Heat SECOND−STAGE Heat 2ND Stage HeatTroubleshooting Cooling Sequence of Operation Call for CoolingTroubleshooting Continuous Fan Sequence of Operation Call for FAN
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Manual 6 pages 24.8 Kb

DAVE LENNOX SIGNATURE COLLECTION GAS FURNACE, SL280DFV specifications

Lennox International Inc has made a significant mark in the heating, ventilation, and air conditioning (HVAC) industry, known for its commitment to innovation and energy efficiency. One of its standout products is the SL280DFV model, a high-efficiency gas furnace designed to meet the needs of modern homes.

The SL280DFV boasts an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%. This rating indicates that the furnace converts 80% of the fuel it consumes into usable heat, making it a cost-effective choice for homeowners. The high efficiency not only reduces energy bills but also lessens the environmental impact by minimizing greenhouse gas emissions.

One of the key features of the SL280DFV is its two-stage gas valve operation. This technology allows the furnace to operate at two levels of heating output: low stage for milder days and high stage for extremely cold temperatures. This adaptability enhances comfort by maintaining more consistent indoor temperatures while also saving energy when full power is unnecessary.

Another innovative aspect of the SL280DFV is its variable-speed blower motor. This smart technology enables the furnace to adjust airflow based on the heating needs of a home, which promotes quiet operation and improved temperature consistency throughout living spaces.

The SL280DFV is equipped with a durable heat exchanger that is designed to withstand the rigors of daily use, contributing to the unit’s longevity. Additionally, the furnace features a smart ignition system that ensures reliable start-ups, so homeowners can depend on it through the coldest winter nights.

Safety is also a priority in the design of the SL280DFV. It includes various safety features such as a built-in flame sensor and advanced venting system, designed to avert hazardous situations and ensure optimal operation.

Furthermore, Lennox offers convenient installation and maintenance support, making the SL280DFV not only an efficient heating solution but also a practical choice for homeowners. With its blend of advanced technology, high efficiency, and reliability, the Lennox SL280DFV is an appealing option for those looking to upgrade their home’s heating system, promising comfort and peace of mind for many winters to come.
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