Desa MVO24VNA, MVO18VPA, MVO24VPA, MVO18VNA Troubleshooting, Observed Problem Possible Cause Remedy

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TROUBLESHOOTING

WARNING: Turn off appliance 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.

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

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

When ignitor button is pressed,

1. Ignitor electrode not con-

1.

Reconnect ignitor cable

there is no spark at ODS/pilot

 

nected to ignitor cable

 

 

 

2.

Ignitor cable pinched or

2.

Free ignitor cable if pinched

 

 

wet

 

by any metal or tubing. Keep

 

 

 

 

ignitor dry

 

3.

Broken ignitor cable

3.

Replace ignitor cable

 

4.

Bad piezo ignitor

4.

Replace piezo ignitor

 

5.

Ignitor electrode positioned

5.

Replace pilot assembly for

 

 

wrong or broken

 

remote-ready units; replace

 

 

 

 

ignitor electrode for variable

 

 

 

 

manually controlled units

When ignitor button is pressed in 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 in- stalled

5.Depleted gas supply (pro- pane/LP only)

6.ODS/pilot is clogged

7.Gas regulator setting is in- 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 con- trol knob. Repeat igniting op- eration until air is removed

5.Contact local propane/LP gas company

6.Clean ODS/pilot (see Cleaning and Maintenance, page 12) or replace ODS/pilot assembly

7.Replace gas regulator

114924-01B

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Contents MVO24VNA, MVO24VPA MVO18VNA and MVO18VPA What to do if YOU Smell GASTable of Contents Safety Information High traffic areas Windy or drafty areas Local CodesProvide adequate clearances around air openings Installation Product FeaturesRemove log set assembly from carton Product IdentificationFlue Opening Specifications Installation and ClearancesVenting Specifications for InstallationConnecting to GAS Supply Installing ApplianceInstallation Items Needed Natural Checking GAS ConnectionsPropane/LP Test Pressures In Excess Of 1/2 PsigPressure Testing Appliance Gas Connections Placement of Loose EmbersTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Operating Appliance For Your Safety Read Before LightingLighting Instructions When Using Remote Wiring DiagramTo Turn OFF GAS To Appliance Optional HAND-HELD Remote OperationInspecting Burners Cleaning MaintenancePilot Flame Pattern Check pilot flame pattern and burner flame pat- terns oftenObserved Problem Possible Cause Remedy TroubleshootingPilot is lit Burner orifices clogged Propane/LP gas company Contact local natural orReplace burner orifices Replace burner orificeOperation Processes and log curing Hours of operation Burners are lit Position when burners areTurn control knob to LO Cold Minute Air is gas line Operate burners until air isStatement at top Gas leak. See WarningGas leak. See Warning statement at top Technical Service Service HintsAccessories Replacement PartsMVO24VNA, MVO24VPA MVO18VNA, MVO18VPA Illustrated Parts BreakdownParts List Keep this Warranty Warranty InformationLimited Warranty Vented GAS LOG Appliances

MVO24VPA, MVO18VNA, MVO18VPA, MVO24VNA specifications

Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA represent a line of versatile and efficient heating solutions designed for various residential and commercial applications. These models are tailored to meet diverse user requirements while providing exceptional value through advanced technologies and features.

At the core of the Desa line is the commitment to energy efficiency. The MVO series incorporates high-efficiency motors and advanced heat exchange systems that ensure optimal performance while minimizing energy consumption. This not only leads to cost savings on utility bills but also reflects a commitment to sustainability, making these models an excellent choice for eco-conscious consumers.

In terms of heating capacity, the MVO18 models offer a robust output suitable for medium-sized spaces, while the MVO24 models are designed for larger areas, providing flexibility for different applications. The ability to adjust heating levels allows users to customize their environment according to their specific needs, enhancing comfort.

The MVO series is equipped with innovative technologies that ensure consistent performance. The integration of intelligent temperature controls provides precise management of heating levels, enabling users to maintain their desired comfort without unnecessary energy expenditure. Additionally, these models feature durable construction materials that ensure longevity and reliable operation over time.

User convenience is a significant consideration in the design of the MVO series. Remote control functionality allows users to effortlessly adjust settings from a distance, adding a layer of convenience for those with busy lifestyles. Furthermore, some models are equipped with programmable timers, enabling users to set specific heating schedules that align with their daily routines.

Safety is paramount in the design of the Desa MVO series. These models come with multiple safety features, including overheat protection and automatic shut-off mechanisms, ensuring peace of mind for users.

In summary, the Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA heating models stand out for their energy efficiency, advanced heating technologies, and user-friendly features. Their adaptability makes them suitable for a range of environments, catering to the diverse needs of homeowners and businesses alike. With a focus on safety and reliability, the Desa MVO series represents an excellent investment for those seeking effective heating solutions.
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