Desa SF20NT installation manual Troubleshooting, Observed Problem Possible Cause Remedy

Page 16

TROUBLESHOOTING

WARNING:Turnoffandunplugheaterandletcoolbeforeservicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean ODS/pilot. This can damage ODS/pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM POSSIBLE CAUSE

REMEDY

When ignitor button is pressed in, there is no spark at ODS/ pilot

1.Ignitor electrode positioned wrong

2.Ignitor electrode broken

3.Ignitor electrode not con- nected to ignitor cable

4.Ignitor cable pinched or wet

5.Broken ignitor cable

6.Bad piezo ignitor

7.Piezo ignitor nut is loose (piezo ignition models only)

8.Battery not installed, battery power low or battery not installed correctly (electronic ignition models only)

1.Replace pilot assembly

2.Replace pilot assembly

3.Reconnect ignitor cable

4.Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry

5.Replace ignitor cable

6.Replace piezo

7.Tighten nut holding piezo ignitor. Nut is located inside heater cabinet at top

8.Install new alkaline battery in electronic ignitor. Verify battery is installed correctly

When ignitor button is pressed in, there is a spark at ODS/Pilot but no ignition

1.Gas supply turned off or equip- ment shutoff valve closed

2.Thermostat control knob not fully pressed in while pressing ignitor button

3.Air in gas lines when in- stalled

4.Depleted gas supply (propane/ LP gas)

5.ODS/pilot is clogged

6.Gas regulator setting is not correct

7.Thermostat control knob is not in pilot position

1.Turn on gas supply or open equipment shutoff valve

2.Turn to PILOT/IGN posi- tion. Fully press in thermostat control knob while pressing ignitor button

3.Continue holding down con- trol knob. Repeat igniting op- eration until air is removed

4.Contact local propane/LP gas company

5.Clean ODS/pilot (see Cleaning and Maintenance, page 15) or replace ODS/pilot assembly

6.Replace gas regulator

7.Turn thermostat control knob to pilot position

16

www.desatech.com

116307-01A

Page 15 Page 17
Image 16
Page 15 Page 17
Contents What to do if YOU Smell GAS Residential Models Garage ModelsTable of Contents Safety Information Local Codes Product FeaturesUnpacking Providing Adequate Ventilation AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR Ventilation Air From Inside BuildingInstallation Installation ItemsCheck GAS Type Ventilation Air From OutdoorsInstalling Heater to Wall Locating HeaterColdest part of room Attaching to wall stud Attaching to wall anchorMarking Screw Locations Mark two screw locations on wall as shown in FigureLocate hardware packet behind left side door of heater Attaching To Wall Anchor MethodConnecting to GAS Supply External Regulator With Vent Pointing DownTest Pressures In Excess Of 1/2 Psig 3.5 kPa Checking GAS ConnectionsTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa For Your Safety Read Before Lighting Installing Refractory and Front PanelOperating Heater Make sure control knob of heater is in the OFF positionLighting Instructions What to do if YOU Smell GASInspecting Heater Cleaning Maintenance ODS/PILOT and BurnerBurner Pilot AIR Inlet CabinetObserved Problem Possible Cause Remedy TroubleshootingContact local propane/LP gas company Goes out when control knob is Control knob not pressed Problem could be caused byAssembly Delayed ignition of burners Manifold pressure is too lowNoise when burner is lit Dirty or partially clogged Clean burner see CleaningWhen heated, vapors from Turn heater off when using Turn off air supplyTechnical Service Service Publications Service HintsWhen Gas Pressure Is Too Low Gas leak. See WarningSF30NT SF30PT SpecificationsLSF30NT, VSF30NT LSF30PT, VSF30PT Replacement Parts AccessoriesParts Central Illustrated Parts Breakdown Parts List LSF20PTWarranty Information Keep this WarrantyQUÉ Hacer SI Percibe Olor a GAS Modelos Modelos Para CocheraTabla DE Contenido Información DE Seguridad Códigos Locales Identificación DEL ProductoDesempaque Características DEL ProductoAire Para Combustión Ventilación Cómo Procurar LA Ventilación AdecuadaConstrucción inusualmente sellada Espacio confinado y no confinadoAire Para Ventilación Aire del interior de la construcción para ventilaciónInstalación Verifique EL Tipo DE GASArtículos DE Instalación Aire del exterior para ventilaciónEn áreas con mucho viento o Ubicación DEL CalentadorInstalación DEL Calentador EN LA Pared Doble en anclaje de pared como se muestra en la figuraColocación del calentador en los tornillos de montaje Coloque el calentador en los tornillos de montajeConexión AL Suministro DE GAS Ventila apuntando hacia abajoRevisión DE LAS Conexiones DE GAS Gas naturalPropano o gas LP Repare todas las fugas inmediatamenteInstale el panel anterior y el refractario Abra la válvula de cierre del equipo consulte la figuraInstalación del panel anterior y el refractario Instrucciones DE Encendido No intente encender ningún aparatoFuncionamiento DEL Inspección DEL CalentadorInspección DEL Limpieza Y MantenimientoEntrada DE Aire AL Piloto DEL Quemador Como se muestra en la figuraSolución DE Problemas Causa Posible RemedioProblema Observado Causa Posible Remedio Baja presión del gasEl termopar está dañado Presione totalmente la perilla de controlEl problema desaparecerá Cierre el suministro de aireSe enciende o se apaga Silbante cuando el quemadorConsejos Para Servicio Servicio TécnicoCuando la presión del gas de entrada sea muy baja SF30NT EspecificacionesLSF30NT, VSF30NT Piezas DE Repuesto AccesoriosCentral DE Piezas Clasificación Ilustrada DE Piezas Lista DE Piezas Información DE Garantía Guarde Esta Garantía

SF20NT specifications

Desa SF20NT is a versatile and innovative gas-fired space heater designed for efficient heating solutions in various environments, whether in residential, commercial, or industrial settings. This model is known for its high performance, energy efficiency, and advanced technology, making it a popular choice among users seeking reliability and effectiveness in their heating needs.

One of the primary features of the Desa SF20NT is its impressive heating capacity. With a heating output of around 20,000 BTUs, it can effectively warm spaces up to 1,000 square feet, making it suitable for larger areas. This capability is enhanced by the heater's superior metal construction, ensuring durability and long-lasting performance.

In terms of technology, the Desa SF20NT incorporates a direct vent system that utilizes outside air for combustion. This feature not only increases efficiency but also enhances safety, as it minimizes the risk of hazardous fumes entering the living space. The direct vent system allows for installation flexibility; the unit can be vented horizontally through a wall or vertically through a roof, catering to different building designs.

Another standout characteristic of the Desa SF20NT is its thermostat control, which allows users to maintain a consistent temperature easily. This feature contributes to energy savings by enabling the heater to operate only when necessary, thus reducing unnecessary heating costs. Additionally, the unit includes a programmable timer, allowing users to set specific heating schedules, further optimizing energy use.

Safety is also a critical aspect of the Desa SF20NT design. It comes with built-in safety features such as a flame sensor and a safety shut-off system, ensuring that the heater operates under safe conditions at all times. The unit is designed to meet stringent safety standards, giving users peace of mind.

In summary, the Desa SF20NT is a powerful, efficient, and safe space heater that is equipped with modern features and technologies. With its high heating capacity, direct vent system, thermostat control, and safety mechanisms, it stands out as an excellent choice for anyone looking for reliable heating solutions. Whether for home or business use, the Desa SF20NT is built to provide comfort and efficiency year-round.
Top Page Image Contents