Lennox International Inc SL280UH090V48B, SL280UH070V36A Integrated Control Diagnostic Modes

Page 60

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

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Installation Instructions SL280UHV Table of ContentsUnit Dimensions − inches mm Return air from both sidesSide Return Air Opening Either SideAccess Panel Blower Assembly Parts ArrangementSight Glass Safety Information SL280UHV Gas FurnaceShipping and Packing List Use of Furnace as Construction Heater GeneralAir Handler Unit EvaporatorCombustion, Dilution & Ventilation Air Equipment in Confined Space ALL AIR from InsideEquipment in Confined Space ALL AIR from Outside Equipment in Confined SpaceEquipment Confined Space ALL AIR from Outside Setting Equipment BottomBlower Motor Rigid LEG 20 X 25 X Furnace FrontIndoor AIR Return AIR BaseHorizontal Application Installation Clearances Top Left RightEnd Bottom Typical Horizontal ApplicationFilters Duct SystemVenting Upflow PositionTop Vent Discharge Left Side Vent DischargeHorizontal Left Position Horizontal Right PositionSide Vent Discharge Common Venting Using Metal−Lined Masonry Chimney Disconnected VentSticker Vent PipeVent Connector Through an unused masonry chimney flue is not considered102 127 −1/2 152 178 10−1/2 MIN MAX Feet FAN + FAN FAN + NAT 130 Carbon Monoxide Poisoning Hazard Ers or straps. Install a drip leg in vertical pipe runs to − In some localities, codes may require the installationGas Piping Every 8 to 10 feet 2.44 to 3.01 m with suitable hangHorizontal Application Left−Side Air DischargeRight−Side Air Discharge Interior MAKE−UP BOX Installation ElectricalElectrostatic Discharge ESD BOXNon−Communicating CommunicatingIcomfortt Integrated Control Outdoor Unit Icomfort Touch NON−COMMUNICATING System Wiring Communicating System Wiring120V Connections ApplicationsDIP Switch Settings and On−Board Links See figure OFF Single Stage Thermostat w Dual fuel capa Bilities SL280UHV Schematic Wiring Diagram Typical SL280UHV Field Wiring Diagram Integrated Control RS−BUS Link TB82, future use+ = Data High Connection − = Data LOW Connection −10% approx OFF On−Board Links 1045 985940 880SL280UH090V36B Blower Performance less filter 1280 12201155 10951295 12351170 11101360 12301165 11001290 12251160 1380+18% 1605 SL280UH110V60C Blower Performance less filter +18% 1785 SL280UH135V60D Blower Performance less filter Operating Sequence Compressor Thermostat energizes Y2For Your Safety Read Before Lighting Unit Start−UpWhite Rodgers GAS Valve Honeywell GAS ValveGas Pressure Adjustment GAS Meter Clocking ChartProper Combustion DialHigh Altitude Other Unit Adjustments Heating Sequence of OperationHeating Operation with TWO−STAGE Thermostat Heating Operation with Single Stage ThermostatSEC Service Electrical SHOCK, Fire Or Explosion HazardSL280UHV BURNER, Combustion AIR Inducer Assembly 13− To clean the combustion air inducer visually inspect11− Back wash using steam. Begin from the burner opening 17− Reinstall burner box, manifold assembly and burner boxSL280UHV NOX Inserts Planned Service Repair Parts ListIntegrated Control Diagnostic Modes Integrated Control Diagnostic CodesNormal operation 5 seconds after fault recovered Furnace / air handler. Clears after fault recoveredPower at the thermostat. Alert stops all services Equipment is unable to communicate. IndicatesReconfigure the system. Replace control if heating Missioning and Execute ’Set Factory Default mode’Control will still operate on default parameter set Ate feature will be set as ’installed’ and that couldLow pressure switch failed open Sumes normal operation after fault is clearedFault is cleared Tion after fault is clearedOpen or not within specifications −hour soft lock Out. Clears when flame has been proven stableSoft lockout or reset To flame failurePair/add duct. Cleared after the current service de Is not running. Check power to outdoor unit. ClearsError after current is sensed in both RUN Vice is removed, or after power resetSor run cycle, or after power reset Program Unit Capacity/Size Mode FinishedTroubleshooting 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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