Desa (F)SVYD18NR installation manual Troubleshooting, Observed Problem Possible Cause

Page 19

OWNER’S MANUAL

TROUBLESHOOTING

Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.

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

WARNING: Turn off heater and let cool before servicing. 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.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

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

1.

Ignitor electrode not connected to igni-

1.

Reconnect ignitor cable

 

tor cable

 

 

2.

Ignitor cable pinched or wet

2.

Free ignitor cable if pinched by any

 

 

 

metal or tubing. Keep ignitor cable dry

3.

Broken ignitor cable

3.

Replace ignitor cable

4.

Bad piezo ignitor

4.

Replace piezo ignitor

5.

Ignitor electrode broken

5.

Replace piezo ignitor

6.

Ignitor electrode positioned wrong

6.

Replace piezo ignitor

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

1.Gas supply turned off or equipment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.ODS/pilot is clogged

6.Gas regulator setting is not correct

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down control knob. Re- peat igniting operation until air is removed

5.Clean ODS/pilot (see Cleaning and Maintenance, page 18) or replace ODS/ pilot assembly

6.Replace gas control

ODS/pilot lights but flame goes out when control knob is released

1.Control knob not fully pressed in

2.Control knob not pressed in long enough

3.Equipment shutoff valve not fully open

4.Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This prob- lem could be caused by one or both of the following:

A)Low gas pressure

B)Dirty or partially clogged OD S/pilot

5.Thermocouple connection loose at con- trol valve

6.Thermocouple damaged

7.Control valve damaged

1.Press in control knob fully

2.After ODS/pilot lights, keep control knob pressed in 30 seconds

3.Fully open equipment shutoff valve

4.A) Contact local natural gas company

B) Clean ODS/pilot (see Cleaning and Maintenance, page 18) or replace ODS/ pilot assembly

5.Hand tighten until snug, then tighten 1/4 turn more

6.Replace thermocouple

7.Replace control valve

Burner does not light after ODS/pilot is lit

1.

Burner orifice clogged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 18) or replace burner orifice

 

2.

Inlet gas pressure is too low

2.

Contact local natural gas company

 

3.

Burner orifice diameter is too small

3.

Replace burner orifice

 

4.

Thermopile leads disconnected or im-

4.

Reconnect leads (see Wiring Diagram,

 

 

properly connected

 

page 32)

 

5.

Burners will not come on in remote po-

5.

Replace battery in transmitter and re-

 

 

sition

 

ceiver

 

 

www.desatech.com

 

Continued

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Contents What to do if YOU Smell GAS VENT-FREE Natural GAS Stove HeaterDesa International VENT-FREE Natural GAS Stove Heater Safety InformationProduct Identification Product FeaturesLocal Codes Confined and Unconfined Space AIR for Combustion and VentilationProviding Adequate Ventilation Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside BuildingVent-Free Operation Only InstallationCheck GAS Type Clearances to CombustiblesUse an adjustable wrench or Stove Cavity AssemblySheraton Models Amity and Townsend ModelsAttaching Stove Door Appearance May Vary Depending on Model Fastening Heater Base to Stove Drop Bottom Installing GAS LOG Heater Into StoveInstallation Items Needed Connecting to GAS SupplyPressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections SVYD18NR and FSVYD18NR Remote-Ready Models For Your Safety Read Before LightingOperating Heater Lighting InstructionsTo Turn OFF GAS To Appliance Manual Lighting ProcedureOptional Remote Operation SVYD18N and FSVYD18N Manual-Variable Control Models Variable Control OperationMain Burner Inspecting BurnersPilot Flame Pattern Burner Primary AIR HolesCleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning and MaintenanceSpecifications Technical ServiceObserved Problem Possible Cause TroubleshootingObserved Problem Possible Cause Remedy Top SVYD18NR FSVYD18NR Illustrated Parts BreakdownKEY Part Number Description QTY Parts ListSVYD18N FSVYD18N KEY Part Description QTY Indicates Color Suffix Designation Amity SCIVF* Series PSCIVF* SeriesTouch-up Paint Bottle with Brush Porcelain Enamel Teal Green Sheraton NSCIVF* Series Parts List Series TownsendFC* and PFC* Series *Indicates Color Suffix Designation Parts Under Warranty Replacement PartsService Hints Wiring DiagramAccessories Warranty Information

(F)SVYD18N, (F)SVYD18NR specifications

Desa (F)SVYD18NR and (F)SVYD18N are advanced models in the range of valves designed to serve various industrial and residential applications. Known for their reliability and efficiency, these valves are engineered to meet the demanding needs of modern fluid control systems.

One of the main features of the Desa (F)SVYD18NR and (F)SVYD18N is their robust construction. They are made from high-quality materials that ensure durability and longevity, even in harsh operating conditions. The valves are resistant to corrosion, making them suitable for handling aggressive fluids without compromising their integrity. This characteristic is essential for industries such as chemicals, oil and gas, and water treatment, where exposure to different substances is inevitable.

The valves are also equipped with advanced sealing technologies which prevent leaks and ensure optimal performance. The precision-engineered seals provide a barrier against contaminants while maintaining efficient fluid flow. This not only enhances the reliability of the system but also contributes to reduced maintenance costs and downtime.

Another significant advantage of the Desa (F)SVYD18NR and (F)SVYD18N is their versatility. They are designed to accommodate a wide range of fluid types, including gases, liquids, and slurries. This adaptability makes them ideal for various applications, from HVAC systems to industrial manufacturing processes.

In terms of operation, these valves utilize a user-friendly design that facilitates ease of installation and adjustment. They come with standardized connections that fit a variety of piping systems, simplifying the integration process. Additionally, the models have a responsive actuator mechanism that ensures precise control over fluid flow, enhancing operational efficiency.

Moreover, Desa (F)SVYD18NR and (F)SVYD18N are designed with energy efficiency in mind. Their advanced aerodynamic design minimizes pressure drops and energy consumption, making them an environmentally friendly choice. This aligns with the growing trend of sustainable practices in industrial operations.

Finally, both models are subject to rigorous testing to ensure they meet industry standards and regulations. This commitment to quality assurance guarantees that users can trust the performance and safety of these valves in their operations.

In conclusion, the Desa (F)SVYD18NR and (F)SVYD18N valves stand out for their durability, versatility, easy installation, and commitment to energy efficiency. These characteristics make them an excellent choice for anyone seeking reliable fluid control solutions in various applications.
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