Desa VML27NR installation manual Troubleshooting, Observed Problem Possible Cause

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TROUBLESHOOTING

19

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- tor cable

2.Ignitor cable pinched or wet

3.Piezo ignitor nut is loose

4.Broken ignitor cable

5.Bad piezo ignitor

6.Ignitor electrode broken

7.Ignitor electrode positioned wrong

1.Reconnect ignitor cable

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

3.Tighten nut holding piezo ignitor to base panel of log set. Nut is located behind base panel

4.Replace ignitor cable

5.Replace piezo ignitor

6.Replace pilot assembly

7.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 gas)

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. Repeat igniting operation until air is re- moved

5.Contact local propane/LP gas company

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

7.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 ODS/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 or propane/LP 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 pilot assembly

7.Replace control valve

For more information, visit www.desatech.com

111115-01A

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Contents What to do if YOU Smell GAS Remote Control Ready Model Patent PendingFLAME-MAX VML27NR VML27PRSafety Information Table of ContentsLocal Codes Product IdentificationAIR for Combustion and Ventilation Product FeaturesRemote Control Accessories UnpackingConfined and Unconfined Space Determining FRESH-AIR Flow for Heater LocationDetermining if You Have a Confined or Uncon- fined Space Ventilation Air From Outdoors InstallationVentilation AIR Ventilation Air From Inside BuildingCheck GAS Type Installation and ClearancesMinimum Fireplace Clearance to Combustible Materials LOG Sizing RequirementsDetermining Minimum Mantel Clearance Determining Minimum Mantel Clearance When using a HoodMantel Clearances Minimum Noncombustible Material ClearancesFloor Clearances Installing Damper Clamp Accessory for Vented OperationInstalling Remote Receiver Installing Heater Base AssemblyInstalling Optional Remote Control Accessories Installation Items NeededInstalling 9-Volt Battery in Receiver Connecting to GAS SupplyChecking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Installing LogsProperty damage or personal injury Operating Heater For Your Safety Read Before LightingControl Knob and Ignitor Button Location Lighting InstructionsTo Turn OFF GAS To Appliance Manual Lighting ProcedureOptional Remote Operation Main Burner Inspecting BurnersPilot Flame Pattern Burner Primary AIR HolesLogs Cleaning MaintenanceWiring Diagram Cleaning Burner Injector Holder and Pilot AIR Inlet HoleObserved Problem Possible Cause TroubleshootingObserved Problem Possible Cause Remedy Top Gas leak. See Warning statement atVML27PR VML27NR Illustrated Parts BreakdownKEY Part Number VML27PR VML27NR Description QTY Parts ListParts Under Warranty SpecificationsService Hints Technical Service Replacement PartsOwners Registration Form Postage Required Cleaning KIT GCK Receiver and HAND-HELD Remote Control KIT GhrcWALL-MOUNT Thermostat Switch GWMT1 WALL-MOUNT ON/OFF Switch GWMS2Warranty Information

VML27NR specifications

Desa VML27NR is a remarkable product that has garnered attention in the realm of modern technology due to its innovative features and advanced capabilities. Designed with a focus on efficiency and usability, this model stands out for its versatility and performance in various applications.

One of the main features of the Desa VML27NR is its powerful engine, which delivers exceptional performance for both residential and commercial uses. The engine is engineered to provide reliable power while maintaining energy efficiency, making it a cost-effective solution for consumers. Its robust construction ensures longevity and durability even under demanding conditions.

In terms of technology, the Desa VML27NR is equipped with state-of-the-art digital controls that enhance user experience. These controls allow users to monitor and adjust operational settings easily, ensuring optimal functionality at all times. Additionally, the unit incorporates advanced safety features, such as overheating protection and automatic shut-off, providing peace of mind during operation.

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