Vanguard Heating WMH26TNB Troubleshooting, Observed Problem Possible Cause Remedy

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TROUBLESHOOTING

TROUBLESHOOTING

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

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

WARNING:Turn offand unplug fireplace and let cool before servic- ing. Only a qualified service person shouldserviceandrepairfireplace.

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

1.

Ignitor cable pinched or wet

1.

Free ignitor cable if pinched by any

spark at ODS/pilot

 

 

 

metal or tubing. Keep ignitor cable dry

 

2.

Ignitor electrode not connected to igni-

2.

Reconnect ignitor cable

 

 

tor cable

 

 

 

3.

Broken ignitor cable

3.

Replace ignitor cable

 

4.

Bad piezo ignitor

4.

Replace piezo ignitor

 

5.

Ignitor electrode broken

5.

Replace pilot assembly

 

6.

Ignitor electrode positioned wrong

6.

Replace pilot assembly

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.Depleted gas supply (propane/LP only)

6.ODS/pilot is clogged

7.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.Contact local propane/LP gas company

6.Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/ pilot assembly

7.Replace gas regulator

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.Safety interlock system has been triggered

4.Equipment shutoff valve not fully open

5.Thermocouple connection loose at con- trol valve

6.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 ODS/pilot

7.Thermocouple damaged

8.Control valve damaged

1.Press in control knob fully

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

3.Wait one minute for safety interlock sys- tem to reset. Repeat ignition operation

4.Fully open equipment shutoff valve

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

6.A) Contact local propane/LP or natural gas company

B) Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/ pilot assembly

7.Replace pilot assembly

8.Replace control valve

For..com

111043-01A

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASTable of Contents Safety InformationLocal Codes Product IdentificationUnpacking Product FeaturesAssembly AIR for Combustion and Ventilation Providing Adequate VentilationAssembling Hood Unusually Tight ConstructionDetermining if You Have a Confined or Unconfined Space Determining FRESH-AIR Flow for Heater LocationConfined and Unconfined Space Installation Ventilation AIRVentilation Air From Inside Building Ventilation Air From OutdoorsLocating Fireplace Installation ItemsCheck GAS Type BUILT-IN Fireplace Installation Rough Opening for Installing in WallOptional Mantel Installation Mantel Clearances for Built-In InstallationAssembling Brass Trim Brass Trim Shipped with Mantel Installing Blower Accessory GA3450TRemoving Upper Louver Assembly Installing Blower Assembly Removing Valve Cover ShieldFor Built-In Installation OutletExtension Cord Connecting to GAS SupplyAttaching Wood Base to Solid Floor Connecting Equipment Shutoff Valve to Heater Control Installation Items NeededChecking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Fireplace Gas Connections Lighting Instructions For Your Safety Read Before LightingOperating Fireplace Inspecting Burner Cleaning and Maintenance Cleaning Burner Injector Holder and Pilot AIR Inlet HoleBurner Flame Pattern CabinetTroubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement at Specifications Service HintsReplacement Parts Technical ServiceIllustrated Parts Breakdown VMH26TNBParts List KEY VMH26TPB VMH26TNB Description QTYAccessories Owners Registration Form Postage Required 111043-01A Warranty Information

WMH26TNB specifications

The Vanguard Heating WMH26TNB is a powerful and efficient heating solution designed to meet the needs of residential spaces. This heating unit stands out for its innovative technology, robust features, and reliability, making it a preferred choice for homeowners looking to maintain a comfortable environment during colder months.

One of the main features of the WMH26TNB is its impressive heating capacity. With an output that can effectively warm spaces up to 1,000 square feet, it ensures consistent and uniform heat distribution throughout the room. This makes it an ideal option for living rooms, bedrooms, and even larger areas, providing a cozy atmosphere for family gatherings and quiet evenings.

Equipped with advanced heating technology, the WMH26TNB utilizes high-efficiency heating elements that minimize energy consumption while maximizing output. This not only helps in reducing electricity bills but also contributes to environmental sustainability. The unit's Energy Star certification further underscores its commitment to energy efficiency, allowing homeowners to enjoy warmth without compromise.

Another notable characteristic of the Vanguard WMH26TNB is its user-friendly digital thermostat. This intuitive interface allows for precise temperature control and programming, enabling users to set their heating preferences with ease. The programmable functionality means that users can schedule heating times based on their daily routines, ensuring that the space is warm when they need it most, without wasting energy when it's not.

The design of the WMH26TNB is both functional and aesthetically pleasing. Its sleek, modern look allows it to blend seamlessly with various home decors. The unit is also compact, making it easy to install in tight spaces, and it features a durable housing that can withstand the rigors of daily use.

Safety is paramount in any heating appliance, and the WMH26TNB does not disappoint. It includes multiple safety features, such as overheat protection and tip-over shutoff, giving users peace of mind when the unit is in operation.

In summary, the Vanguard Heating WMH26TNB is a versatile heating solution that combines advanced technology, efficient performance, and user-friendly features. Its capacity to efficiently heat large spaces, coupled with energy-saving capabilities, makes it a reliable choice for homeowners seeking warmth and comfort. Whether for everyday use or special occasions, the WMH26TNB stands as a testament to Vanguard's commitment to quality and innovation in heating solutions.
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