Lennox International Inc SL280DFV installation instructions Integrated Control Diagnostic Modes

Page 48

Integrated Control Diagnostic Modes

Display

Action (when button released)

 

 

No change (idle)*

Remain in idle mode

 

 

Solid

Enter diagnostic recall mode

 

 

Solid

Discharge Air Installed

 

 

Solid

Enter flame signal mode

 

 

Solid

Program unit capacity/size (Unit Code)**

 

 

*No change implies the display will continue to show whatever is currently being displayed for normal operation (blinking decimal, active error code, heat state, etc..)

** After the art flashing the

0

seconds. If push button is pressed again and held during that time, the control will start to display characters corresponding

to different variable speed furnace models for 3 seconds each. While the wanted character−model is displayed push button has to be released. Selected option will flash display for 10 seconds and during that time push button has to be pressed

and held for 5 seconds. Once control accepts new setting it will store data in non−volatile memory and reset itself. If 10 sec-

onds expires or push button is held less than 5 seconds, control will exit filed test mode and go in idle without programming

the unit size.

Integrated Control Diagnostic Codes

Press the diagnostic push button and hold it to cycle through a menu of options. Every five seconds a new menu item will be

displayed. Release the button when the desired mode is displayed.

 

 

 

 

 

When a solid "P" is displayed, the furnace capacity / size is programmed.

 

 

 

 

 

When the solid

 

 

 

 

 

options: No change (displaying error history) remains in Diagnostic Recall mode; solid

 

" exits Diagnostic Recall mode;

and solid . Must press button while flashing

 

 

 

 

 

When the solid

 

 

 

 

 

cycle/reset, by pressing and holding the push button until 3 horizontal line are displayed

 

 

ter 10 minutes of entering

flame signal mode.

 

 

 

 

 

 

 

 

Code

Diagnostic Codes/Status of Equipment

Action Required to Clear and Recover

 

 

 

 

 

 

 

.

Idle mode (Decimal blinks at 1 Hertz −− 0.5 second ON, 0.5 second OFF).

 

 

 

 

 

 

 

 

 

 

 

 

A

Cubic feet per minute (cfm) setting for indoor blower (1 second ON, 0.5

 

 

 

 

 

 

second OFF) / cfm setting for current mode displayed.

 

 

 

 

 

 

 

 

 

 

 

 

C

Cooling stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed / Pause

 

 

 

 

 

 

/ cfm setting displayed / Pause / Repeat codes).

 

 

 

 

 

 

 

 

 

 

 

 

d

Dehumidification mode (1 second ON) / 1 second OFF) / cfm setting dis-

 

 

 

 

 

 

played / Pause / Repeat Codes).

 

 

 

 

 

 

 

 

 

 

 

 

h

Heat pump stage (1 second ON, 0.5 second OFF) / % of input rate dis-

 

 

 

 

 

 

played / Pause / cfm setting / Pause / Repeat codes.

 

 

 

 

 

 

 

 

 

 

 

 

H

Gas Heat Stage (1 second ON, 0.5 second OFF) / 1 or 2 displayed /

 

 

 

 

 

 

Pause / cfm

 

 

 

 

 

 

setting displayed / Pause / Repeat codes. Blinking during ignition.

 

 

 

 

 

 

 

 

 

 

 

 

dF

Defrost mode.

 

 

 

 

 

 

 

 

 

 

 

 

U

Discharge Air Temperature

 

 

 

 

 

 

 

 

 

 

 

 

Page 48

Page 47 Page 49
Image 48
Page 47 Page 49
Contents Installation Instructions SL280DFV Table of ContentsUnit Dimensions − inches mm TOP ViewParts Arrangement Safety Information SL280DFV Gas FurnaceShipping and Packing List Use of Furnace as Construction Heater GeneralCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from Inside Equipment in Confined Space ALL AIR from Outside Equipment in Confined SpaceEquipment Confined Space ALL AIR from Outside Downflow Installation NON−COMBUSTIBLE Floor Opening SizeSetting Equipment SL280DFV UnitCooling Coil 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 System Wiring 120V ConnectionsApplications 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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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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